Yes, this is how I exactly feel. How people can manage it or at least I’d like to know the success-failure ratio.FYI, I have often read about people getting good results when rating their paper at ISO3 or even 6, but I have never gotten good results myself beyond maybe ISO 0.5 or 1 at best. The lack of response to red light and the very high response to blue compared to green make it difficult to tame/control contrast in real-world situations. I don't know how or why others get acceptable results at e.g. ISO3; all I know is it never worked for me.
Oh, then it’s more of a gamble than photography.
Actually, the green subject should be good - it will be picked up by the slower green sensitive emulsion.It looks to me that I might take photos of objects/buildings/cars but for instance nature where green is more likely to be present is out of the question or I don’t know how to tame it.
I only shoot with obscuras and they tend to take high contrast photos as far as I experienced.Isn't it? And that is the fun, exciting, playful part of this. I've decided not to take photography seriously ever again.
Here are my first out of the studio shots with RB67 on Ilford MG IV pearl paper developed in Ilford Multigrade developer:
View attachment 242989
View attachment 242990
Really worth shooting more and play around. Having another back loaded with paper is a fun twist to the game! (I was shooting the bridge with film back too)
Should I give it 2 or 3 stops more exposure if the green sensitive emulsion is slower?Actually, the green subject should be good - it will be picked up by the slower green sensitive emulsion.
It is the blue and red subjects that cause the contrast challenges.
2 or more three stops than what?Should I give it 2 or 3 stops more exposure if the green sensitive emulsion is slower?
I just thought that I underexposed the photos and I should use slower shutter speed by 2-3 stops.2 or more three stops than what?
If you want to work with mainly green subjects, than use a yellow filter to minimize the blue light and subjects in the scene.
All of the red subjects are going to come out clear on the negative and black on the print.
Now do tests to see what speed you are getting with just the green sensitive emulsion, used to photograph green subjects.
The tests may be affected by the yellow filter, because in addition to filtering out blue, it also may add neutral density. You may wish to meter through the filter.
You can do the same with the blue sensitive emulsion, mainly blue subjects and a magenta filter.
You may be running into reciprocity failure problems, and your meter may have been overly influenced by the blue colours and light in the scene.I just thought that I underexposed the photos and I should use slower shutter speed by 2-3 stops.
As the subject was grass with bushes and were green and I used a yellow filter on one of them I’m even more confused what is the problem with these shots.
I only shoot with obscuras and they tend to take high contrast photos as far as I experienced.
Your photo looks gorgeous and you can open up the lens on your rb67 so it won't pick up that amount of contrast and it's a really healthy looking experiment, a fun. What I attached is a disaster that's why I called it gambling and still don't know how to solve the issue.
FYI, I have often read about people getting good results when rating their paper at ISO3 or even 6, but I have never gotten good results myself beyond maybe ISO 0.5 or 1 at best.
use the time from the data sheet for full development. You can control contrast and develop a dilution.You can control contrast and develop a dilution.I’d like to use rc papers instead of film negatives in a pinhole camera, so then to make contact print. Is the developing time determined by inspection or can I use the given time which is on the datasheet let’s say 1.30min as a basic? Okay, it depends on several factors and tastes but still. It’s hard to see the dark areas in safelight and I might over or underdevelop it.
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