Re: exposure

[P3D <PTWW@xxxxxxx>]

Robert Linnstaedt writes:

>Slide film is more tolerable when slightly under-exposed.
  
>But, if over-exposed, the diapositive lacks _density_ and nothing you do
will
>change that.

Exactly!  That is why I made my original "good" exposure (not "perfect"
exposure) contribution.  A few people mentioned they thought some film/
and/or camera required a full stop extra exposure.  That may or may not
be true for them, but the conclusion should be made through a formal
exposure test.  So if I can try to succinctly state my view and advice:

1. Within a certain generally acceptable exposure range, "best"
exposure is a highly subjective interpretation that is impacted
by many variables.  "Best" means what *you* like "best" (unless
your work will be graded by someone with different preferences.)

2. Do not rely on either a stated ASA or the advice of someone using
the same camera or film as to how much exposure is required to please
you...or whoever is going to view the results and pass judgement.
Perform a formal exposure test using the exact equipment and film
you will be working with!  It's easy and *highly* educational.  Conduct
a new test when *any* of your variables change.

Paul Talbot


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