You do shoot a lot Stone!
And what a fine film it is.My staple.
Also my staple, but for pushing to 1600. For ISO 400 shooting I prefer Ilford Delta 400, which is sharper, or sometimes Fomapan 400. At 1600 Ilford HP5+ is king.
In any case I always leave a HP5 roll in my camera bag, because it will work perfectly in any light situation -- from ISO 200 to 3200 !
May I know why you shoot at 400 when contrast is already low? Or I'm I miss-understood something.
Yea why not? It's already a low contrast film, shooting it at 250 and pulling it would make a really low contrast scene almost unbearable to print with. 400 makes sense for low contrast.
Yep.
EI 400 for low contrast, and slightly longer developing time.
EI 250 for normal contrast, and normal dev time.
EI 200 for high contrast, and normal dev time.
The contrast of the film is actually constant.
But the contrast of the negative is a variable.
That is because with exposure and development variations WE are completely in control of the final negative contrast.
If somebody thinks ISO 400 film is too low in contrast, then just develop it longer. Easy peasy.
I was actually surprised by the question, because it is a very fundamental quality of the black and white photography system, to manipulate print contrast at the negative developing stage.
If you look at old Agfa data sheets they gave different developing time for different gamma. It's really that simple.
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