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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

"Brindabellas" Stunning Infared landscapes shot on modified infared RED EPIC

So the only mod to the camera body was the olpf that was recalibrated to let in IR frequencies, then you used standard IR filters for the most part on your lenses? Sounds pretty simple and gave great results. I wonder if Red will ever sell an interchangeable IR pass olpf...

Glen Ryan said:
Hey thanks for sharing the trailer Jarred - and thanks for all the feedback from everyone :)

I'll post some tech notes when I get a chance for anyone interested. But in the meantime just a couple of quick things ...

Most of the footage on 'brindabellas' was shot on a modified Epic-X. This mod was done by RED - the regular OLPF was replaced by one without the IR cut filtration - so everything came in! Then we filtered the lenses to keep out the boring light the eye can actually see ;) We used a range of IR filters on the lenses (mostly Nikkors) - but probably 95% of it was just plain old R72s (720nm).
Click to expand...
 
John Marchant said:
Hey Travis, Red already do:

http://www.red.com/store/products/dsmc-ir-pass-olpf-color

and so do we since earlier this year:

http://kippertie.com/?product=full-spectrum-zero-lowpass-filter-for-dragon
http://kippertie.com/?product=ir-spectrum-zero-lowpass-filter-for-dragon
Click to expand...

thanks John... I had forgotten but I actually had heard of yours before. How do yours compare with those from RED? For the two versions you make... I'm not sure I grasp the differences between them, or how it translates to the image.
 
Red's is their standard OLPF, but coated differently to allow IR light to pass as well as visible light.

Our current ones give you no OLPF softening, (as monochrome images seldom suffer aliasing, and benefit from the sharpness)

The two versions give you either all visible light plus IR, or just the IR and no visible light.
 
Impressive footage. Thats a cool look to explore...
It makes me want a IR OLPF. :)
 
Even the grainier shots are stellar. Hell, especially the grainy shots.
 
John Marchant said:
Red's is their standard OLPF, but coated differently to allow IR light to pass as well as visible light.

Our current ones give you no OLPF softening, (as monochrome images seldom suffer aliasing, and benefit from the sharpness)

The two versions give you either all visible light plus IR, or just the IR and no visible light.
Click to expand...

Hello John,

Would it be better to have your Visible+IR so we can cut the visible light with what ever NIR filter we want? 610/720/850/1000 filter.
Or is combining your olpf with other manufacturers filter not a good match for IR photography?

Thanks.

Pat
 
My usual choice is to go full spectrum and cut the visible with a filter of my choosing, however 720nm is almost always the smart choice.

With that in mind, to avoid a number of the pitfalls of full-spectrum (split focus, requirement to add front of lens filtration etc), we have made an IR only version to make life more straightforward for that type of imagery.
 
John Marchant said:
My usual choice is to go full spectrum and cut the visible with a filter of my choosing, however 720nm is almost always the smart choice.

With that in mind, to avoid a number of the pitfalls of full-spectrum (split focus, requirement to add front of lens filtration etc), we have made an IR only version to make life more straightforward for that type of imagery.
Click to expand...

Ok,

And from your experience you'll only go with the 720 visible cut. How are the other filter performing. Are they to "dark" or to "light"? Why 720? ;-)
 
I use others too - 950nm for example works as a heavy ND suitable for full daylight for an IR sensitive setup. I also use a variety of black and white targeted colour filters. The camera responds strongly in the range from visible to around 875nm
 
Patrick Tresch said:
Ok,

And from your experience you'll only go with the 720 visible cut. How are the other filter performing. Are they to "dark" or to "light"? Why 720? ;-)
Click to expand...

Hi Patrick

just thought I'd maybe add a few thoughts about 720nm filtration. I'd agree with John it's usually a great choice - probably 95% of the footage in 'brindabellas' was shot with 720nm filters. You can still get a strong IR 'look' in bright sunny conditions but you can also use 720nm pretty well in less than ideal conditions like murky, overcast rain and mist or dusk etc. You also don't 'lose' a lot of light so this is the ideal filter if you're shooting low light, or high speed ... or macro .... Or high speed, lowlight macro ;)

One advantage of shooting full spectrum is if you stumble across an amazing sunset or colourful butterfly you whip off the ir pass filter and replace it with an ir cut filter and knock out some perfectly good colour footage - without changing OLPFs.... This doesn't always work with all lenses in all light but is usually pretty usable.

One big advantage of using an ir OLPF like John's 720nm version is that filtering the OLPF rather than the lens tends to reduce a lot of the hotspot and internal flare issues associated with IR. We use a range of modified DSLRs with 720nm filtration on the sensor and these are much less prone to hotspots than our full spectrum Epic-X and Dragon-X. Also if you have a 720nm OLPF and want more IR effect you can always add an 830 onto the lens ... This will trump the 720nm on the OLPF. If you try this on DSLRs just remember not to point it at the sun as an 830 will make the viewfinder seem black but the ir will stream in and damage your eye .... This is how I lost visibility in my left eye for several days and left me with the super power of being able to see in near IR ;)

Cheers

Glen
 
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