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Caustics 101 - Glass foreground distortion effects

caustics glass foreground experimental

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#1 Ryan Sherwood

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Posted 07 August 2016 - 12:29 PM

Lately, I've been very interested in experimenting with various glass/flashlights/translucent objects to distort the frame. I wanted to gather feedback from other people on objects or techniques they've found to work well.

 

I've used various pieces of beveled glass, vaseline smeared on UV filter, water bottle and got some pretty cool results. Using a flashlight to veil the lens gets pretty nice results, but it's hard to find consistency using some of these techniques since the results are so variable. 

 

Anyone ever rig a flashlight to 15mm rails so the veil stays in the same spot? I'm also interested in getting the "double edge" look and experimenting with glass beads.

 

It seems that when using caustics two of the big rules are: 1. Use longer focal lengths. 2. Shoot into backlight.

 

 

Two notable examples:

 

1.

 

2.


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#2 Phil Rhodes

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Posted 08 August 2016 - 06:27 AM

I'd have thought that the purpose of firing a flashlight into the lens was so it'd react organically to motion, so I'm not sure I'd want to magic-arm it off the camera.

 

P


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#3 Miguel Angel

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Posted 08 August 2016 - 08:39 AM

When you use prisms, bent plastics, glass, etc, you usually put a small magic arm on the mattebox so it can hold the piece of whatever you have in front of the lens for the whole take in the desired position without you having to worry about moving the camera and the "thing" at the same time. 

 

Sometimes you can do that with a flashlight to create a flare, for example, if the camera is locked off and you want to place a flare in a desired point. 

However, it is usually done with a tripod and, let's say, a pocket par, attached to a tripod or on hand. 

 

I like playing with a lot of things in front of the camera (even tripods) and you can find some frames from something I'm shooting at the moment using a lot of those techniques on the following link:

 

http://www.reduser.n...reuznach-Lenses

 

Have a good day. 


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#4 Mark Kenfield

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Posted 09 August 2016 - 09:41 PM

Gorgeous frames Miguel! Can't wait to see the finished piece. Please push the producers to make English subtitles available for those of us more... linguistically challenged :)


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Rig Wheels Passport

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Zylight

Visual Products

Paralinx LLC

Technodolly

CineLab

Willys Widgets

CineTape

rebotnix Technologies

Pro 8mm

Abel Cine

The Slider

Tai Audio

Ritter Battery

Broadcast Solutions Inc