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| 2004/9/29-30 [Consumer/Camera] UID:33836 Activity:kinda low |
9/29 Dear MOTD photographers, I heard that when I shoot color negatives, I
need to overexpose it by one stop in order to get the best result. For
example, I should set my camera to ISO 100 when I use a roll of ISO 200
film. What's the reason behind it? Thanks.
\_ Nonsense. Now a days color negatives are pretty good that this
technique is irrelevant. If you do so, you have to tell the lab
about this. Too much hassle. If you want to do this, then you must
be a pro and knows exactly what you are doing. If not, then you
shouldn't bother with it.
\_ Thanks. What was the reason to do this in the old days then?
\_ That's just silly. Modern film and developing process allows
for a bit of light metering error, usually at least 1 full stop
of error up and down. Most labs just leave the machine set to
auto correct both color saturation and exposure. If you ever
want EXACTLY whats on the film, you have to specifically tell
them when you drop off the film "do not autocorrect ANYTHING.
I want exactly what's on the negative." Following that guys advice
will end up hurting you in the long run. Actually, setting your
camera to 100 when you are using 200 will make your shooting a bit
of a bitch since your shutter time will almost always be longer
than it actually needs to be.
\- Yeah, this is one of those "if you have to ask, go with
the defaults". There are defeinitely times when you are
better off erring on the side of underexposing [if the
metering is complicated and for one reason or another
you are not bracketing]. Like if you are shooting in
snowy or glaciers ... over exposing washing out details
in a fashion where you cant recover. If underexp, you
may be able to recover some detail. ok tnx. --psb |
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