Second attempt today with the Agfa Gevaert 12x12cm colour filters. I’m determined to get them to work as they cover the larger brass lens apertures nicely.
I also threw into the mix, out of desperation, the stained glass filter that seemed to solve my problems at my last studio. It’s a sort of bright orange. I’m making it difficult for myself, with an unknown unmeasured filter.
I thought I was doing well until I suddenly realised I had no green in my foliage 🙂
It was a case of two steps forward and one step back. I’ll get there eventually. It just takes time, I guess.
I’ll try again on the weekend. Maybe I’m overthinking it?
What’s your light source? Is there any light outside the visible spectrum that could be causing trouble?
Hi Dave. It’s daylight and daylight balanced CFLs that I also use for wet plate. I did consider throwing in a UV filter but was unsure.
Have you considered pre-flashing or exposing the paper with the oposite color needed against the color cast. To avoid any filters on the camera at all. I have had this idea for a long time but never tried however.
Best would be to do that before exposing the paper, but perhaps another way would be during the development at the re-exposure. However then it is more difficult to control I guess
Hey! I have started pre or post flashing my paper with RGB lights, precisely controlled. It helps a lot. You still need filters, because the layers have different sensitivities, but it absolutely helps zero out the colour cast offset.
That is good news, I was hoping it would be possible to make pre-exposed paper for controlled studio lights and a second for outdoor, however outside there will be probably a lot of variation and a compensating filter stays needed.
For pre-flashing is the blue dye on the paper an issue? Indeed post flashing could perhaps also help but then you would not gain the sensitivity of having less filters to begin with (my guess). Let me think about that what you say that the layers respond different to the RGB. Probably then need to pre-flash with continuous light source and use normal color-filters? They would affect the sensitivity mountains like on the time when it is exposed. LED probably has narrow band and side bands we do not directly see.
Thank you for your reply, love your diverse website.
Regards
Jan.
Hi Jan, I made a long reply but the website lost it! Drop me a direct message in Instagram or email me at davethewalker@gmail.com for more geeky details 🙂