In article , midgard@tiac.net says...

>I have accidently shot a roll of kodak tri-x 400 with my Nikon FE set for
>200 asa instead of 400. I like the shots that I took very much and was
>wondering what effect the faulty asa would have on the film. Can I
>correct the problem in the darkroom? Or do i need to reshoot all of the
>pictures? Any help or suggestions would be greatly appreciated.

Cut maybe 10% from the developing time, and don't worry - Tri-X was
originally rated at 200 by Kodak, then rerated, removing the safety
pad - the film is a true 400 in D-76, but slight overexposure will
not hurt image quality very much (try 8 minutes at 70 degrees in
D-76, with agitation at 30 second intervals). If the film is
already developed, more exposure time will be required
during enlarging, but little else will be different
(except, maybe slightly improved blacks, slightly
flatter highlights, and slightly larger grain).
Hope This Helps