Recent content by SergioVileda

Hello guys, unfortunately I did not try print from 0% and 170% negatives. I was investigating do I expose negatives correctly. I thought when I correctly expose and develop the negative, I should get 10 stops of density on the negative. But that was wrong assumption. Film manufacturer provides...

Looking at these curves, paper is only able to represent 6-7 stops of SBR/SLR. While film is able to capture 10 stops and compress them into same 6-7 stops of density. If paper was able to capture same 10 stops of densities, then we would get completely different results on paper. Wondering if...

I think I've got my problem. There is no need to mach 1 to 1 scene dynamic range to film densities. Scene dynamic range should match film exposure range, that film can accept and produce density on linear part of the curve. from this curve, Dmax - Dmin = 2.5-0.25 = 2.25 = 10^2 = 100 = 7stops...

I'm just trying to fit as much information as possible into the negative, to have lots of details in highlights and shadows. In my understanding, most details are captured at 45% degree inclination of the curve, when scene is mapped 1:1 to the negative (at least 9-10 stops of scene, whole scene...

yes, on vertical axis range between min and max densities is shown. this range is measured in log2's (steps) instead of log10's (density D values) on horizontal axis represents expected values of densities (stops) the closest match between expected and actual densities looks to be at +120-140%...

thank you for feedback. Yes, I'm using desitomer to measure densities of the negative. I'm surprised, that Ilford recommends 7:30 as normal development time, while my results show, that +120% (16:30) gives much better dynamic range. Maybe the reason is that I develop single frame in 12,5ml? I...

Hi, I've made a controlled lighting setup with a light box and gray scale pattern from 0 to 10 stops. I was doing single shots of HP 5 with same exposure parameters but different development times. I was doing single frame development in 12,5mL of stock DIY D-76. 12,5mL comes from my...