Magic Lantern Forum

Showcasing Magic Lantern => Share Your Photos => Topic started by: garry23 on May 27, 2018, 05:43:18 PM

Title: IR post processing in LR
Post by: garry23 on May 27, 2018, 05:43:18 PM
For those that like 'playing around' in the IR bands: I've just posted about ML-enhanced IR photography at: http://photography.grayheron.net/2018/05/infrared-post-processing-in-lightroom.html

As a flavour: here is one of the handheld images I took today with my trusty IR-converted EOSM:


(https://www.magiclantern.fm/forum/proxy.php?request=https%3A%2F%2Fthumb.ibb.co%2FcBAQsd%2FIR_1_of_5.jpg&hash=b899f69ab0429cb99f4d149ba4d16314) (https://ibb.co/cBAQsd)
Title: Re: IR post processing in LR
Post by: Kanakori on May 28, 2018, 02:57:14 AM
It is beautiful. I'd love to apply this to video but I have no idea where to begin with.
Title: Re: IR post processing in LR
Post by: 50mm1200s on May 28, 2018, 05:32:09 AM
Nice.
Title: Re: IR post processing in LR
Post by: garry23 on May 28, 2018, 08:07:30 AM
@Kanakori

Video, helped by ML, should be easy. In fact a non-ML video should also work.

'All' you need is an IR converted camera and some channel swapping.

Pick up a cheap EOSM and get it converted  ;)

I personally don't do video.

Cheers

Garry
Title: Re: IR post processing in LR
Post by: garry23 on May 28, 2018, 08:48:54 PM
Postscript

Having spoken to the guy who did my EOSM conversion, to 720nm, it looks like the EOSM sensor has an asymmetry that results in colour cast down the left hand side.

Apparently the EOSM3 has this as well. Not sure why? Tolerancing in the glass maybe? You see less of the effect if you convert to a full spectrum filter, ie less glass.

If you process in B&W you won’t see it.

If you process in false colours you will, especially if you push the colours, eg with a heavy debase.

You can reduce/eliminate the colour cast in LR, but it will require a bit of extra post processing.

Just a warning if you are thinking of using an EOSM for IR imaging.

Cheers

Garry