Characteristic curve, when developed in Rodinal (named "Blazinal" in Canada) is something I never saw before:
At 92% reflectance (like white paper) I got film density 1.28 which tells me that development time is OK.
From white paper to 18% grey the curve is going downward somehow slow, which tells me that details in highlight will be recorded but with reduced contrast, and density at 18% reflectance is very high and will be reproduced un-naturally bright.
From 18% grey to 9% reflectance of the surface the curve is nearly horizontal and on print the surfaces with these two tones might merge very easy.
From 9% reflectance and toward transparent part of the Film the curve drops like from cliff, which means darker parts will be separate very well.
I did test three times for I could not believe that Ilford can make such bad Film. I am done with hp5 for ever.
This shape of the curve is not even and close to what Ilford shows when developed in Ilford developer. I just dislike it very much and bought 30 m of Tri-X which I am about to test, and from information I have now it is to expect much better characteristic curve.
Did anyone tested the Film in other developers and made characteristic-curve (density vs tone II to VIII)
At 92% reflectance (like white paper) I got film density 1.28 which tells me that development time is OK.
From white paper to 18% grey the curve is going downward somehow slow, which tells me that details in highlight will be recorded but with reduced contrast, and density at 18% reflectance is very high and will be reproduced un-naturally bright.
From 18% grey to 9% reflectance of the surface the curve is nearly horizontal and on print the surfaces with these two tones might merge very easy.
From 9% reflectance and toward transparent part of the Film the curve drops like from cliff, which means darker parts will be separate very well.
I did test three times for I could not believe that Ilford can make such bad Film. I am done with hp5 for ever.
This shape of the curve is not even and close to what Ilford shows when developed in Ilford developer. I just dislike it very much and bought 30 m of Tri-X which I am about to test, and from information I have now it is to expect much better characteristic curve.
Did anyone tested the Film in other developers and made characteristic-curve (density vs tone II to VIII)