Reebo Posted June 28, 2017 Share Posted June 28, 2017 Hi there! I do a lot of technical photography, including shooting infrared in raw format. I've long searched for an iOS app I can use to do some post processing work on my infrared shots, but I've faced two challenges. Being able to do the "standard" channel reversals that are ubiquitous in infrared processing. Being able to take in raw files and benefit from their data for greater dynamic range in the results. To be clear, because I'be seen many articles on many sites that discuss infrared processing and what they are discussing is converting a conventional photo to look like infrared. I'm shooting actual infrared on a modified camera. In Photoshop, the norm is to: Go to Image > Adjustments > Channel Mixer On the Output Channel: Red, change red output from 100 to 0 On the Output Channel: Red, change blue output from 0 to 100 On the Output Channel: Blue, change red output from 0 to 100 On the Output Channel: Blue, change blue output from 100 to 0 This essentially reverses the red and blue channels, taking an infrared original and making it the most common "false color infrared"image type used. My questions are: Can Affinity perform these types of channel switches? I've tried this in a great number of iOS apps and have yet to find one that does it, so I'm understandably fatigued with "purchase another app and roll the dice". Knowing it can perform this task would be a major factor for me and anyone who shoots in true infrared. Can Affinity take in Nikon raw files, including multiple raw files to use for HRD assemblies? Thanks in advance to anyone who can shed some light on this. Affinity looks to be an awesome photo app. I'm very hopeful that it has what I need to really streamline my workflow. Cheers. Quote Link to comment Share on other sites More sharing options...
Staff MEB Posted June 28, 2017 Staff Share Posted June 28, 2017 Hi Reebo, Welcome to Affinity Forums :) Yes, Affinity can perform these types of channel switches using a Channel Mixer adjustment (see screenshot below). Yes, Affinity can also use RAW files for HDR merges. Quote A Guide to Learning Affinity Software Link to comment Share on other sites More sharing options...
Reebo Posted June 29, 2017 Author Share Posted June 29, 2017 Hi Reebo, Welcome to Affinity Forums :) Yes, Affinity can perform these types of channel switches using a Channel Mixer adjustment (see screenshot below). Yes, Affinity can also use RAW files for HDR merges. channel_mixer.jpg Thanks a ton for answering my question. I'll buy the app today! Quote Link to comment Share on other sites More sharing options...
WorshipNihilism Posted January 9, 2018 Share Posted January 9, 2018 Hello there ! I'm also an Infrared enthusiast , and i've took some pictures with an Infrared filter - i still meet few issues while trying to apply the channel mixer adjustments ( certainly with the Red/Blue inversion trough the channel mixer : this only put my image in a total Blue ) So is there any tips you could give me to achieve this - i've seen the white balance is also a parameter not to neglect - but i find myself stuck in my composition as the parameter i set on my infrared pictures always seem to destroy the entire image Here a raw picture that might be useful for you to check on the problems i meet IMG_7921.CR2 Quote Link to comment Share on other sites More sharing options...
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