Nikon FM2n, AI Nikkor 50mm f/1.8S, Kentmere Pan 400, developed in LegacyPro L110 at 1:31 for 5.5 minutes. Three individual black and white frames shot through Tiffen #25 Red, #58 Green, and #47 Blue filters, respectively, then combined using GIMP to create a trichrome color image.
dourbalistar wrote:
Nikon FM2n, AI Nikkor 50mm f/1.8S, Kentmere Pan 400, developed in LegacyPro L110 at 1:31 for 5.5 minutes. Three individual black and white frames shot through Tiffen #25 Red, #58 Green, and #47 Blue filters, respectively, then combined using GIMP to create a trichrome color image.
dourbalistar wrote:
Nikon FM2n, AI Nikkor 50mm f/1.8S, Kentmere Pan 400, developed in LegacyPro L110 at 1:31 for 5.5 minutes. Three individual black and white frames shot through Tiffen #25 Red, #58 Green, and #47 Blue filters, respectively, then combined using GIMP to create a trichrome color image.
Very nice! A technical question but how do you meter when using this approach? And do you keep exposure fixed for all filters or adjust as you normally would for a B&W image?
fjablo wrote:
Very nice! A technical question but how do you meter when using this approach? And do you keep exposure fixed for all filters or adjust as you normally would for a B&W image?
Thank you, @fjablo! The Tiffen filters I used have filter factors of 8x (+3 stops), 6x (+2.6 stops), and 5x (+2.3 stops) for red, green, and blue respectively. I take an incident reading to get a "base" exposure and then adjust the shutter speeds +3, +2, and +2 (since my camera and lens only have full stops) with each filtered frame.
I actually took some notes for this photo, and my "base" incident light reading here was f/4 at 1/8s. So for the red filter, I dropped the shutter speed to 1s, and then 1/2s for green and blue filters.
