The Miracle of Visual Effects, will it continue?

The Miracle of Visual Effects, will it continue?

If you had told people years ago that you could create a fake tiger with a key role as a real tiger in a film seen around the world, they would have thought you were crazy. Of course they’d say “I’d certainly be able to tell the difference of a fake tiger compared to a real tiger”. And not just look like a real tiger but act like a real tiger. Yet that is what happened. Millions of people viewed Life of Pi and had no idea almost all tiger and animal shots were hand done. I say hand done because people animated those. People painted the tiger texture. People set the fur. Not computers. The computer is a useful tool but it’s the people behind the computers that do the real work. Buy a room of computers and see how many shots they produce on their own. You don’t credit your computer for writing your report for you.

And not just the tiger, the entire ocean was added. The entire sky was added. We see miracles all the time on the screen these days but most people take it for granted. 

First image is what the visual effects crew start with

Second image is the finished image with CG tiger, ocean, sky added

First image is what the visual effects crew start with

Second image is the finished image with computer graphic tiger

Photo illustration by Todd Vaziri 

from his With and Without Rhythm & Hues post 

Visual effects are everywhere

Many films you see couldn’t have been made if it weren’t for visual effects. Would the worldwide audience pay $10 to see a rowboat in a pool with a man in a tiger suite? Could the filmmakers have shot it on a real rowboat on the real ocean with a real tiger? Any attempt to do so would have been tragic. We gave the opportunities to the filmmakers to make whatever they can imagine, whatever the story calls for and they make hundreds of millions of dollars, yet they complain about the cost.

Alice in Wonderland

Alice in Wonderland

All films up for this year for the Best Picture Oscar had visual effects. Everyone of them. Agro was able to show Iran. They were able to show trucks and a jet on a runway. They were able to create and manipulate a burning flag. Zero Dark Thirty used visual effects to create Afghanistan, flying special copters and other shots. Most of the visual effects you never noticed, that’s why you’re wondering where they were in Silver Lining playback or Amour. And most slip by visual effects artists as unnoticed as well. That’s how good we have become as artists and how far we have pushed our tools and skills.

And it’s not just these films. Almost all films out of Hollywood have visual effects. Most independent films use visual effects. Whether it’s a period film or a buddy comedy it uses visual effects somewhere. The work of visual effects professionals and our art form is everywhere. It permeates most moving media today to a far greater extent than people realize. 

Lincoln

(paraphrased comment)

The Proposal

Ted

Down with Love

Most images provided via beforevfx tumbler 

Many more examples there

Those CG animated films viewed around the world use animators, compositors, lighters and other visual effects workers. 

Once, Game of Thrones and any fantasy and science fiction television show uses them of course. And many regular shows use them.  Boardwalk Empire, Breaking Bad, Bones etc all have used visual effects.  Many backgrounds are put into scenes you had no idea were done. 
Stargate Studios Virtual Backlot Reel 2012 from Stargate Studios on Vimeo.

Virtual Backlot Demo : New York from Stargate Studios on Vimeo.

You know how much airbrushing there is in the world of magazines? Now think of movies and television in that light. How many commercials do you see that have visual effects? How many music videos have visual effects?

[Update 2/26/2014 


This Is What Movies Would Look Like Without Visual Effects  ]

And it’s not just today. Quite a few films in the past used visual effects extensively. Gone with the Wind, King Kong, WWII films, Charlie Chaplin used visual effects in his film Gold Rush. 

Clip of VFX artist, Craig Barron from Criterion Gold Rush release  for more info

Those videos games from your iPhone to your Xbox use modelers, texture artists and animators.

To all the visual effects haters out there: you've already seen thousands of shots that simply passed you by and you had no idea.

The studios and filmmakers have become addicted to the work we do. It’s impossible for them not to use them. Even if it’s just to go in to a film image and change something. The audience has gotten addicted to them as well. They expect to see the spectacular in a tent pole movie. They expect no holds barred in showing them what they need to see to tell the story.

How much money has been saved on productions by using visual effects? A lot!  Even the ability to shoot on a stage or different location for television saves an amazing amount of money.

Gone

Now imagine what would happen if there were no more visual effects. What if all visual effects artists stopped tomorrow, put down their computer pens and said, enough is enough. Workers on films, television, commercials, animation, video games, etc. 

Everything. 

Stopped.

Entertainment content companies, studios and filmmakers would be in deep trouble if that were to happen. They’d have very little content that wasn’t touched by visual effects artists. 

How much international business would My Dinner with Andre make on the Imax screen? How many variations on Honey Boo Boo would people around the world be willing to drive to the movie theaters and pay $10 to see? How many people would want to see 2 hours of the 'before' footage shown above? How many people would be willing to play Pong and not the latest and greatest graphic game?

So why are we in this mess?

Because studios push and push and push the visual effects companies. They try so hard to squeeze every penny out of the visual effects companies and workers that they try everything they can. They lobby and get huge subsidies from states and countries to pay them, the studios, to make movies there. It’s not to the taxpayers benefit in those locations. And it's decimating the visual effects industry and that short sightedness is going to bite them.

They pit visual effects companies against each other. They let change requests pile up without stop. They squeeze the amount of time to do the work. All of this pushing has resulted in a number of visual effects companies going out of business and forced visual effects artists to be unemployed or migrant workers moving from one country to the next, all so that a penny can be saved. Workers are overworked. Many with no overtime or benefits.

And now they have pushed so hard that they have left the visual effects industry in a very fragile state. The very thing that is used in all of their content. The thing that allows them to make their impossible movies. The thing that saves them money. The thing that is used in all of their profitable tent pole movies. And if they push much more they may find it starts to collapse much faster and harder than they expect. They may find that the level of visual effects they’ve been experiencing the last decade will be gone.

How will they do their films if the companies collapse and the experienced artists bail out of the industry? How long will they have to delay their films while waiting for an opening at the remaining visual effects company?

There’s a need to make this industry sustainable but the studios act like a paper company clearing huge forests without realizing they themselves will soon be left without the substance of their existence. This has the makings of killing the Golden Goose upon which they rely so heavily.

Visual Effects Worker

All this pushing has finally woken a sleeping giant. The visual effects workers. Year after year of dealing with this type of situation and the workers are getting tired of it. They work and work and produce fantastic results, which in turn makes the studios hundreds of millions of dollars. These artists make the impossible possible and allow for profits on things that couldn’t have been done without their talent and hard work. They’re tired of having no respect and for being treated as they have been. And they have begun to unite with a passion that is growing. Even visual effects workers in India are getting weary. I don't think studios want to have headlines like Apple did with Foxconn but that's where it's being pushed to. If studios and companies don’t change the artists will start making the changes for them.

What can be done?

1. Studios and filmmakers should realize what a gift visual effects has provided them. Visual effects has allowed impossible stories to be told. Visual effects have helped draw worldwide audiences to every media platform. Visual effects provide a power and finesse that has not been seen before. This has a huge impact on the creative freedom at the same time providing huge returns in the box office.

2. Studios and filmmakers should start thinking about the sustainability of the visual effects industry for which they rely on. Squeezing it more will produce nothing but dust. Constantly moving it around the world will not gain them what they desire. They're already exceeded the limits and are now seeing diminishing returns.

3. The studios and filmmakers need to embrace visual effects as part of the process. As a necessary part of the process and acknowledge it may be the reason the film can be made.

4. The studios and filmmakers can start treating visual effects as another department with key creative’s. It’s not a black box to be ignored. Visual effects is not a commodity.

5. Studios and filmmakers can work with the visual effects supervisors and producers to design the most bang for their buck. Visual effects can be designed for budget limits from the start. Visual effects artists can push the films beyond imagination.

6. Studios need to put in an effort to control post expenses from their side. They need someone to oversee post-production like they do during production. Decisions need to be made in a timely manner and endless tweaks and changes need to be controlled. Live action doesn't do infinite takes, why should it be necessary with visual effects? Studios might be surprised just how much that step alone could save them on visual effects.

7. Studios and visual effects companies need to work together to shore up the visual effects industry. They need to work together to find a new business model that works for both. They need to start thinking long term, not just this project.

8. Studios and visual effects companies need to acknowledge that ultimately they have people working for them. Those numbers on your spreadsheet are people. It’s their talents and hard work that makes any of this possible. We’re not technicians. We’re artists and craftspeople.

9. Visual effects companies need to act professional and stop underbidding and chasing the work. That's costing them and the industry. That's one of the reasons we are where we are. They need to operate as real businesses. They need to be able to say No at times.

10. Visual effects companies need to adhere to the actual labor laws. If they can’t do the work without breaking the law or treating their workers badly, then they need to re-evaluate what they're doing.

Related:
Visual Effects are inexpensive
The Value of Visual Effects

Variety article by David Cohen: Is the vfx biz in India tricking artists into working for free?
Shows some of what we as visual effects workers are up against. This will be getting worse as studios continue their assault.

Visual Effects Tips 2

[Visual Effects Tips 1 post]

Time is important in visual effects. There’s never enough of it so make every attempt to minimize wasted time and simple mistakes.

Many of these examples are animation or compositing but most apply to the majority of visual effects work from texture or matte painting to lighting.


Checking materials
When starting a task or shot check the materials you’ve been provided.
Are all the materials correct?
Does the live action match the count sheet?
If there’s a match move is it correct?
If you’re composting are the supplied renders correct with correct alphas?
If there are problems flag them immediately. If you don’t check you may not know that there are problems until well into the shot, at which time trying to correct the mistakes will take longer and be more difficult.

After confirming everything is ok become familiar with the material. If it’s a greescreen take a look at the screen and potential problems extracting the mattes. If you’re going to roto the live action run the clip a few times to see what’s happening so you can plan your approach.

Note to visual effects companies: Make sure your contracts include explicit details for deliveries to your company. File formats, schedules, naming, file organization, size, etc. Sometimes it’s amazing the amount of incorrect material received from a client. On one project I worked on the editorial dept seemed to have a PA who was simply recopying everything onto hard drives and shipping them with no information and no organization. The visual effects company then would have to spend hours sifting through the material to determine what was new and what had changed. In other cases I’ve heard of some editorial departments constantly providing incorrect count sheets. By having this info in the contract the first time this happens flag it to the client and inform them that additional lapses that require rework or unplanned man hours correcting will be billed on a time and material basis. Additional costs seem to be one of the few ways to get a clients attention unfortunately but it also means that the meager profits will be less likely soaked up by these types of sloppiness or errors on the clients part.


Thinking
Now that you’ve reviewed the materials take a moment to think through the task at hand and how this will be accomplished. What are the critical elements, what are the steps that will need to be done, what tasks will have to be done by other departments, etc. What are the items that will likely change or that will need special care? If this a stereo shot or will be converted to stereo after the fact then you will have to consider the implications of working in real 3D space. If you’re compositing you’ll need to think of the layering process.


KISS
Keep it simple stupid. In your plan for the task try to keep it simple. You have to anticipate the areas that will need to be controlled independently and break it up accordingly but avoid going crazy with layers or keyframes if possible. A complex shot will probably require more than simple work but don’t needlessly make the project or the work complex.


Sharing
As you start thinking of the shot and the steps required keep in mind it’s likely you will have to pass the work on to someone during the course of the show. That someone could be you having to re-open the project and make changes two months after it was finalled or it could be you re-starting the shot after it was put on hold for three months. Or it could be a co-worker who has to take over the shot while you finish something else or the shot may have to be split up because of an impending deadline.

With that in mind you want to make it so no one, including yourself, has to spend hours reverse engineering what you were doing and why. (I’m not even going mention the possibility that a sequel may mean some of these files and projects are opened years later)


Fundamentals
Start with the fundamentals. If you’re an animator then you want to make sure you have the proper poses at the correct key frames. Don’t get lost in trying to do the secondary animations, just focus on the fundamental animation. If you’re a compositor adjust the black levels and adjust the basic color of the assortment of elements you’ve been provided before throwing in all the layering atmospherics and other enhancements.

Once these are done and approved then you know you have a solid foundation to build on. It allows the supervisor or director the ability to review the work before you spend a lot of time on it. There may be radical changes that would make all the additional work worthless.

There will be times when it will be useful to do slop or rough animation, renders and composites. Frequently it’s necessary to block in an entire sequence so the director and editor can review before proceeding. Other times it may be necessary to provide shots for test screenings that were scheduled to be done in the future. Regardless you’ll get notes on the shots and the first impulse will be to take these quick and dirty versions and start making adjustments. However it’s almost always best to get back to the foundation and the basics before addressing the notes. If the black levels are off or the basic timing of animation is wrong, it will still be wrong even tweaking the other aspects of the shot. And in the end it’s likely you’ll waste a lot of time and have to scrap it to get back to where you should have started from.


Priorities
You should have a To Do list for every shot you work on. With feedback from the supervisor or director you may be changing the order of priorities. Neither the director nor supervisor will want to ask multiple times for the same thing. Let them know if there is an issue accomplishing that.

If you’re reviewing yourself play the shot through and note the items that stand out to you as not in keeping with what the final shot should be. Determine the priority based on which issues truly jump out the most and which ones are fundamental issues versus getting sidetracked and spending time noodling with a few pixels in the corner. If it had to go in the movie tomorrow what are the top 5 items to be fixed or changed?

As you work on each item mark it off your To Do list so you always know how much you’ve done and how much is still to be done.


Monitor
Is your monitor actually calibrated? Are you using the correct lookup table and gamma settings? Are you seeing the same results you see in dailies review and that the supervisor and director see? If not check with your company to see if your system can be calibrated or you’ll have to develop an eye to compensate for the difference. Be aware if your system or playback has limited color depth.


Reviews
If you’re presenting to the director or supervisor it’s usually worthwhile having the previous version loaded and ready to review since many times it will be used for reference and comparison. If you’re showing with and without results in something like Nuke then wire up the viewer so you can quickly cycle though the different versions or variations if possible. Having to zoom out, find the areas, relink the viewer, etc are time consuming and should have already been done ahead of time.  Sometimes it’s worth putting in a switch to quickly change the composite flow. Create snapshots in After Effects or other apps.


Reviewing your work
For your own reviews crank the gamma up and down and the exposure up and down to spot any inconsistencies or level issues. Try the alternate lookup tables (make sure to return to normal once done reviewing). Will the shot hold up in the DI or once it’s transferred to video? Are areas being clipped or is there a mismatch of blacks and levels? Is there any quantizing? Check the blue channel for grain issues. Have you added the proper amount of grain and does the whole shot match?

Play it slow, fast and in reverse to see if everything is working as it should. This can sometimes show flaws in the animation or simply allow you to spot fluctuation problems.

When you’re staring at something a long time you may not spot some of the flaws that might be obvious to others. Painters sometimes look at their work in a mirror to give them a different feel for the painting. This was common in the pre-digital days with matte painters. Flopping the image in the viewer or composite will provide this same option of seeing the shot in a new light.

Be honest with yourself. If the animation or whatever you're working on isn't working consider how to fix it. Discuss with a co-worker, lead or supervisor if you know it's wrong but aren't sure how to proceed.


Organize
Do your work in an organized fashion that follows logical thinking. If your company has templates or guidelines be sure to follow those. It’s easy in some apps such as Nuke to end up with something that looks like a mess of spaghetti. This will chew up your time daily to maintain and change and it will mean that anyone else who needs to work on the composite will spend extra time digging through the composite.

Come up with some basic conventions yourself if none is provided by your company or lead. Try to be consistent about the approach and naming. Group parts of the shots as modules. This makes it easy to enable/disable sections or to switch sections. If you’re working in Photoshop you might want to put sections in folders to keep it more organized. Likewise with some roto packages and other apps there are opportunities to group related items.


Document
It’s not always clear what your project file is doing. It may seem totally obvious to you now but to others or even yourself a few weeks from now it will likely be a totally mystery. If you’re writing software code then include comments. If it;s a complex process with multiple files consider writing a Read Me file or some basic document describing what the process is and how it works. By including some forms of documentation it will be easier and faster to keep track of what is what. Many software packages offer methods to document the work as you’re doing it. Label layers in After Effects and Photoshop. This minimizing the amount of guess that is done or the toggling of layers to determine exactly what each is doing. Label key nodes in Nuke.

Some apps allow adding comments. Nuke provides Sticky Notes so you can mark a specific area with a reminder to yourself or an explanation why you’re doing it this way. Their backdrop can be placed behind a number of nodes with text and with user defined colors making it easy to spot key areas even on a large and complex composite. Nuke also provides No Op nodes that can be labeled. Take a look at the software you’re using to determine how you can use labels and other built in documentation. If none exists consider writing up a short text file in the director with your notes.

Add slates to your rendered images and add useful comments there. These are going to become very valuable when you have to dig back through them for yourself or a client.


Save often
Many software packages have autosaving functions. Make sure these are turned on but also get in the habit of saving yourself to make sure your work is being saved where it needs to be saved.


Save versions
Save your files and projects as you go along with version or take numbers. Use the company defined file structure and naming conventions. Especially important if you’ve made major changes. It’s very frustrating when the client or supervisor likes a test or previous version you did but you didn’t save the project. Now you have to spend time trying to recreate what you already did once before.


Optimize
When you work on a shot you will likely have to render quite a few takes on your machine and/or on the render farm. If for some reason your render isn’t optimized that can equate to quite a few hours of lost production time and processor time.  As you manipulate, test and review interactively an unoptimized configuration can mean the difference of trying multiple changes in a short time or become a slog of spending most of your day making a few simple changes. It may mean the difference of producing a great result on a short turnaround or a mediocre result since you didn’t have time to manipulate and render a better version.

Optimize your renders when possible. Know the application you’re working in and know what options there are when rendering. Here’s a list of optimizations for Nuke. There’s likely more than a few lists for all visual effects software packages. Avoiding things that slow down the app and doing more of the things that speed up the app may have a big impact on the day to day work. Consider using low resolution proxy models or elements when you can for working on animation or basic testing. Consider pre comps and caching when working on the top layer. Consider rendering just a frame range of the shot and combining it previously rendered frames to check the new frames in context.

For specific tasks you might turn off some of the advanced settings - motion blur, fur render, etc. as long as you know what you’re evaluating. You might be able to disable specific areas of a composite or render if that’s not what you’re working on. Just make sure to restore all of the settings for the final render and another other renders that require full reviews.

There’s no point in spending 3 days trying to shave a few seconds off the entire shot render but if your render is running much slower than it should due to simple changes, then it’s a waste of time and resources.

The other thing to consider optimizing is yourself and your approach. If you’re working a lot in one software package then get to know all the keyboard and mouse shortcuts. Configure the app keys or your Wacom to take advantage of specific and frequent tasks. Use macros or scripts as needed for repeating common tasks. In Photoshop use actions for tasks that you do a lot of.


Check your results
Check all the renders or tests you generate and consider them in terms of the request from the director or supervisor. Make sure to check your work before passing it on to others to use. Do NOT assume that its correct. If you’re an animator check the final animation for any stray keyframes or oddities. Rotoscopers should make sure the motion and coverage is correct. If you’re rendering simulations make sure they’re the required length and have correct alphas. If you’re a TD make sure there aren’t any glitches or bad frames rendered.

It’s far better to find out now and fix it rather than getting a frantic call late at night two weeks later.

Once you’ve checked the results make sure everything has been correctly entered int whatever asset database your company may be using. Make sure to prep the files for archiving if you’re finished.


Keep a log
Keep a log of the time you work and the shots and tasks you’re working on. You likely already do this for your timecard or for production but it’s worthwhile recording it as well for yourself. It can be a real eye opener to see how much actual time was spent on a shot or given task or how much linear time it took by the time the back and forth happened with the director. Use this as a reference when you’re asked to bid on a shot or when you’re asked how much time you think is required to get the version done. All of us in visual effects are eternal optimists. We assume we can whip out the next version in a couple of hours. Time after time of saying that with a client waiting and disappointing them with something two days later is a problem. It’s also a problem for the visual effects company who bids on the amount of time required and unknowingly underbids the work simply because everyone is optimistic. The company should in fact be doing their own reality check of what the typical shot requires but most companies don’t work that way. No point in budgeting 2 hours of roto per shot on a new show if the company average was 8 hours of roto per shot on the last show.

Also keep a record of the bids you provide when bidding a show. Don’t be surprised if the numbers changed quite a bit when you go to do the actual work months later. Especially problematic when they try holding you to it. The supervisor or producer may think you were pessimistic and ‘adjusted’ the amount of time much lower. Or in some cases they may have added a lot of padding.


Check the next phase
Once you’re done with your tasks and passed the files or elements on it’s usually out of your hands. And the company probably wants you to be focusing your efforts on the next task. But when possible it’s worth checking the next step, the next render or task. You can check to make sure the correct version is in fact being used of your animation. You can make sure the root elements or renders are the right ones and are being used correctly. It’s possible there’s been a mixup or confusion on the next step and by viewing the 10 second shot you can flag an error that may not be evident to others.


Check the final
If a shot you worked on in any form is finalled check it out. Its worth doing a reality check of what you did and how it was used in context of the shot and project. Did you over build details of the model that never show up given the action or smoke levels? Did texture map you painted work? Did that elaborate 30 second shot get cut down to 2 seconds? Would you have done more on a specific aspect that would have made the shot better? There may not be much you can do about some of these things but it’s worth getting the experience and understanding how things come to be. It’s also worth considering how would you approach this same task or type of shot next time. Would you change anything? Have you learned anything you can apply to the remaining shots or to future projects?

[I'll have future tips posts. Feel free to add your own tips in comments]

Cloud Tank effect

People have been asking me to provide some of the details of the Cloud Tank so that's been on a long list of subjects. Recently I had to write up some of the notes so thought i'd post it here as well.

When I start in visual effects I was hired by Doug Trumbull as his assistant. The first day I was asked to create clouds in a liquid for a film that he had just started working on called Watch the Skies. You may remember it by the final film title, Close Encounters. They needed to create clouds and they liked the look of pouring cream in tea or coffee.

I was given a 20 gallon aquarium and $20 of petty cash. I worked it out in a few days with additional ideas from Doug, Wayne Smith and others.

This same process was later used in a number of films and commercials. (Raiders of the Lost Ark, James and Giant Peach, ID4, etc) Actually most of these used the same exact tank as well.

I've attached a couple of primitive drawings to make it clearer. My photos are packed away deep in boxes otherwise I'd post some here. This was also covered to some extent in the Close Encounters book.

[Update: 12-22-11 To make things a little clearer I'm adding some notes here. The basics are a large all glass aquarium was filled halfway with salt water and then fresh water was carefully added to the top. Salt water is heavier so tends to stay on the bottom but you want to avoid mixing them if possible. That's what some of the details below are about. Also best to avoid getting the water too warm. It's very difficult to see any difference in the water once filled since it all looks the same (assuming you've also cleaned the tank and filtered the water).  under the right light and angle you may be able to just make out a slight difference.

Next white liquid tempra paint is injected in the fresh water portion (top), usually just a few inches from the dividing line of the fresh and salt water. Think of a large syringe with an aquarium tube going into the water. When the tempra paint is injected it billows outward like cumulus clouds and will tend to sink a bit. But the salt water prevents it from going lower so the 'cloud' tends to flatten it's base on the salt water line and and billow outward, similar to real clouds based on air pressure levels. Avoid going below into the saltwater since the clouds will just drop to the bottom of tank.

Once you're setup, light the water and create the clouds. You can film while injecting the clouds to get the large billow action or you can film once they're in place. Filming can be under-cranked (less than 24 fps) or over-cranked (over 24 fps) depending on the look desired. Over-cranked will tend to increase the sense of scale and by placing smaller clouds in background you can create force perspective. You'll need to completely drain the tank, clean it and repeat after each shot.]

Process in a nutshell as used on Close Encounters:
2000 gallon glass tank approx 7 x 7 x 4 feet deep

Water was purified and filtered in 2 large hot tubs/wine tubs(?) 1000-2000 gallons in size.
One had rock salt added (probably close to seawater specific gravity but I can't remember the details)
The salt water was pumped in first usually to halfway mark, dependent on the shot.
Sheet of thin plastic (visqueen) was laid on top. Think of the plastic used for heavy duty trash bags or painter's drop cloths, flexible but not easy to tear. This was longer than the tank front to back and would drape out the back of the tank.

A PVC pipe running the width of the tank was placed on top of this with a rig. Later to remove the plastic it would be pulled out and this PVC pipe was used to keep it down.
A PVC piping system that looked like a fork from above was placed just above the plastic and the fresh water was pumped in.
When done this was removed and the thin plastic sheet was removed.

Now it appeared as just a tank of water but there were two layers if you looked very carefully.
A large syringe was used with aquarium tubing to add small forced perspective clouds in the distance.
The mixed white tempera paint was injected right above the slat water layer. if it went below the tank was contaminated and would require a full redo.

Next an atomic arm was used to inject the main clouds during shooting. This allowed the operator to stand in front of the tank near the camera and as they move it around a brass tube was moving in the tank.
An electric trigger on the handle would cause the tempera paint to be injected as the arm was moved. The tube came from a pressure cooker filled with the paint.

Pressure was supplied from a compressor and an electronic valve was connected to the atomic arm trigger.
We also had a light source (with rotating colored lights) that went down this same tube as a fiber optic.

Frame rates could be under cranked or over cranked depending on the look.






Close Encounters Book

Close Encounters - BluRay

Close Encounters - DVD

Close Encounters VFX Video 1 - YouTube

Close Encounters VFX Video 2  - YouTube

Updated: Polaroid from setup 6-14-76

Cloud tank articles from others:

Single Minded Movie Blog

Fish tank for otherworldly environments

VES & Gnomon - Golden Compass Breakdown

Gnomon School Of Visual Effects And The VES
Welcomes The Visual Effects Team From The Academy Award Nominated, The Golden Compass

Feb 28, 2008 in Los Angeles at the Gnomon School

Academy Award nominated Michael Fink, Senior Visual Effects Supervisor, Susan Macleod, Visual Effects Producer, Bryan Grill, Visual Effects Supervisor for Digital Domain and Raymond Chen, Co-visual Effects Supervisor for Rhythm & Hues Studios will be will be discussing the planning and execution of many of the visual effects shots for The Golden Compass.

Click above on name of post for more info.