Why did Kodak recommend that their 50 EI film Tmax 100 be used at 50 EI if you wanted good shadow detail and fuller tonal scale, it's there in Kodak's first datasheets. Oh and Kodak had the ASA part of the ISO test ammended before they could release Tmax 100 with a 100 ISO.
It's about getting the best tonal range from a film, Tmax at half the box speed and suprisinglt EFKE 25 was twice the box speed - which was the Tungsten speed not daylight.
Reality it's about what you want in your prints (or scans) if the shadow detail isn't there you can't tweak it out later. Developers make a big difference using Pyrocat HD I get almost full box speed and a long tonal scale and plenty of shadow detail.
Last edited by Ian Grant; 03-09-2013 at 03:32 PM. Click to view previous post history.