Jwenting From Netherlands, joined Apr 2001, 10213 posts, RR: 21 Reply 1, posted (11 years 10 months 2 days 19 hours ago) and read 834 times:
Your camera allows you to choose to change the filmspeed if you want, or to use film without DX coding.
Changing the speed will tell the meter to expose for a different rating. You will then have to have that film processed specially to use that rating (and not in the automated machines which also use the DX coding).
Bruce From United States of America, joined May 1999, 5025 posts, RR: 17 Reply 2, posted (11 years 10 months 2 days 13 hours ago) and read 820 times:
So can i take a few pics from the roll using 100 speed, and a few more at 400, then how would I tell them to process it? If not all the frames are the same ISO speed?
Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
Da fwog From United Kingdom, joined Aug 1999, 867 posts, RR: 9 Reply 3, posted (11 years 10 months 2 days 13 hours ago) and read 818 times:
Nope - you need to take the whole roll on one setting.
Basically, unless it's a dire emergency, don't expose ANY roll of film at anything other than its rated setting. And as virtually any roll of film you buy these days should already be DX coded, it's unlikely you will ever need to resort to specifying the speed manually.
Cfalk From , joined Dec 1969, posts, RR: Reply 4, posted (11 years 10 months 2 days 6 hours ago) and read 809 times:
Bruce,
The whole film MUST be shot at the same ISO rating. Preferably, you will know even before you put the film in the camera that you will "push" it, so that you use a marker on the film canester, mark it +1 or +2, put the film in, adjust the ISO and shoot the whole film like that. Marking the canister will make sure that you don't forget to tell the lab to push-process.
Sponsor Message: 
From United States of America, joined May 1999, 5025 posts, 
From Netherlands, joined Apr 2001, 10213 posts, 
From United Kingdom, joined Aug 1999, 867 posts, 
Printer friendly format 
