Edgar Dubrovskiy Posted May 6, 2011 Share Posted May 6, 2011 Hi! Was shoting a simple music video for a competition last week and director showed me some very bizarre filters he found in a storage room at his work. They measured 4' x 3.5' and came in various deep colours like yellow, blue, purple etc. but the key was - the reflections in these filters appeared to have all sorts of colours from blue to green on the yellow filter, magenta on the red etc... Here is a sample picture taken with the yellow filter at 45 degrees: If anyone can help to figure out what are these filters, would be amazing :) Thanks a lot! Link to comment Share on other sites More sharing options...
Stuart Brereton Posted May 6, 2011 Share Posted May 6, 2011 Looks similar to a Vari Color Polarizer, but it's hard to know for sure. Link to comment Share on other sites More sharing options...
Daniel Klockenkemper Posted May 9, 2011 Share Posted May 9, 2011 Perhaps they were dichroic filters? Link to comment Share on other sites More sharing options...
Jonathan Bowerbank Posted May 9, 2011 Share Posted May 9, 2011 I dunno, to me it looks kinda like a Hot Mirror, covering half the lens and swung away from the lens to reflect the male figure who's standing to the side of the camera, creating a trippy double exposure type effect. Which is why he appears soft with the evidence of a slight double reflection coming from the outer and inner panes of the filter itself. I have a Red/Green polarizer that I've used to shoot stills with...and I long for the day where I'll be able to use in on a shoot: Link to comment Share on other sites More sharing options...
Jonathan Bowerbank Posted May 9, 2011 Share Posted May 9, 2011 Oh, didn't realize you'd captioned the photo, saying it was a yellow filter at 45 degree angle...at least I sorta guessed right ;) It appears to have a dichroic effect, you may be on to something. Link to comment Share on other sites More sharing options...
Eric Salinger Posted May 13, 2011 Share Posted May 13, 2011 Oh, didn't realize you'd captioned the photo, saying it was a yellow filter at 45 degree angle...at least I sorta guessed right ;) It appears to have a dichroic effect, you may be on to something. Forgive my ignorance, but how do you put a filter on a 45 degree angle? Is this done in a matte box? I could imagine doing it for a horizontal split in a special tray, but for the vertical split like Edgar posted originally, I'm at a loss for how one would do that. Link to comment Share on other sites More sharing options...
Edgar Dubrovskiy Posted May 15, 2011 Author Share Posted May 15, 2011 Perhaps they were dichroic filters? Thanks a lot Daniel, definitely "these guys"! Link to comment Share on other sites More sharing options...
Edgar Dubrovskiy Posted May 15, 2011 Author Share Posted May 15, 2011 Forgive my ignorance, but how do you put a filter on a 45 degree angle? Is this done in a matte box? I could imagine doing it for a horizontal split in a special tray, but for the vertical split like Edgar posted originally, I'm at a loss for how one would do that. Hi Eric, in this particular instance it was a hand-rig. Left one :) Link to comment Share on other sites More sharing options...
Eric Salinger Posted May 16, 2011 Share Posted May 16, 2011 Hi Eric, in this particular instance it was a hand-rig. Left one :) Ha, that was the mental solution I had in mind for that, but I wondered if perhaps there was a Matte Box stage I was unfamiliar with that achieved it. So I'm guessing an operator, 1st AC pulling focus, and a 2nd holding the filter? Hope you guys weren't handheld and walking around much! Link to comment Share on other sites More sharing options...
Edgar Dubrovskiy Posted May 16, 2011 Author Share Posted May 16, 2011 Nah, in this instance it was just tests :) Link to comment Share on other sites More sharing options...
Jonathan Bowerbank Posted June 6, 2011 Share Posted June 6, 2011 Forgive my ignorance, but how do you put a filter on a 45 degree angle? Is this done in a matte box? I could imagine doing it for a horizontal split in a special tray, but for the vertical split like Edgar posted originally, I'm at a loss for how one would do that. Jerry rig ;) Or perhaps afixing a swing-away mattebox at an angle, then cutting/killing/masking off half of the reflected image with some black tape (not ON the filter, but along the mattebox), revealing the subject in front of the lens :) Link to comment Share on other sites More sharing options...
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