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Full Spectrum and infraRED Cinematography

Ces Peynetti

Ces Peynetti

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I'll begin by stating that I know very little of infrared photography or cinematography, I've always liked it but never had a chance to come by an IR modded camera, until now.

A few days ago I received my Full Spectrum and IR OLPFs from Kippertie and have gone out and messed around with them for a little while, just so I can begin wrapping my head around it, from how to shoot, to choice of lenses, color and b & w, filtering, Post processing workflows in REDcine, DaVinci, or raw/color processing software of your choice, etc.

I've spent most of yesterday and today trying to do some research, and though there is some good knowledge out there for photography, I found very little on cinematography, though there are some beautiful IR pieces out there such as Brindabellas or Wilderness, so I thought I'd start a thread where we can share knowledge on the topic. I'll try to keep this top post updated with the info gathered here.

(In other words, this is a thread for someone like John Marchant to throw at us their knowledge :wink5: )
 
Lens Hotspot Reports
The lists below is based on my own tests and what others have reported. Lenses with a * have had mixed reports. Obviously this can be a bit subjective and even some of the lenses on the "Poor Performers" category can still be used.

Good Performers:
  • Canon 24-70mm f/2.8 v. 1
  • Canon 35mm f/1.4 L *
  • Canon 24-105mm f/4 L IS
  • Canon 70-200 mm f/4 L
  • Canon 100mm f/2.8 L * (better at higher apertures)
  • Canon 135mm f/2.0 L

Poor IR Performance
  • Canon 70-200mm f/2.8 L IS
  • Sigma 50mm f/1.4 ART
Other resources:

http://dpanswers.com/content/irphoto_lenses.php
 
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Finally had some time to shoot with my full spectrum OLPF a bit more recently. Mostly lens tests since it's been raining quite a bit. However yesterday was finally clear so I took out my camera and shot this.

*Update: Added a couple more videos



and this was mostly to test lenses and different natural lighting situations:

Password: infra

 
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I have a buddy who wants to shoot a MFA film in infrared on dragon but can't find any examples of african american skin tones in digital infrared. Any help would be awesome because he's got to cast it before he can do any camera tests.

Also anyone used the Sony Cinealta's in infrared and can give feedback on their performance?
 
ALEXANDER SAFDIE said:
Does anyone know whether Red IR pass OLPF or Kippertie full spectrum is better?
Click to expand...

They are different. The RED IR pass OLPF will only allow light in the infrared spectrum hit the sensor (around 720nm and above) whereas the Full Spectrum will show both the visible spectrum and the infrared spectrum.

With Kippertie's Full Spectrum you would have to use a filter on the lens if you only want to see IR such as the Hoya R-72. With RED's IR OLPF you wouldn't have to do this.

Now, Kippertie also makes an IR Spectrum OLPF. I haven't used RED's IR OLPF so I don't know if one is better than the other, but my guess is that there isn't much of a difference if any.
 
Ces Peynetti said:
They are different. The RED IR pass OLPF will only allow light in the infrared spectrum hit the sensor (around 720nm and above) whereas the Full Spectrum will show both the visible spectrum and the infrared spectrum.

With Kippertie's Full Spectrum you would have to use a filter on the lens if you only want to see IR such as the Hoya R-72. With RED's IR OLPF you wouldn't have to do this.

Now, Kippertie also makes an IR Spectrum OLPF. I haven't used RED's IR OLPF so I don't know if one is better than the other, but my guess is that there isn't much of a difference if any.
Click to expand...

Main difference would be with the "Zero Lowpass" versions of the Kippertie filters. Super crazy sharp compared to the RED OLPF's.
 
Instead of the Hoya screw on filter, what 4x5.65 filter would you use in conjunction with the Full Spectrum OLPF to achieve the Infrared look?
 
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