In <001101c0f411$012076a0$3800000a@phoenix>, Rob Geraghty wrote:
> FWIW I scanned a frame off a recent roll of T400CN and in the midtones there
> is no significant grain visible at 2700dpi. There's something like grain in
> the shadows but as it's a C41 B&W neg film I'm not sure how to label it.
> The grain appears to vary with the exposure to light, so the dark areas are
> more grainy than the light areas. I exposed the roll at EI250 rather than
> the rated 400. Colour C41 film grain doesn't seem to vary as much with
> exposure to light. I'll have to check some more.
>
These C41 B&W films (T400CN and Ilford XP2) are noted for producing finer
grain if you deliberately overexpose them. I usually rate mine at 280ASA for
this reason.
Brian Rumary, England
