xtol121
Member
I wonder if the average photographer and the average viewer can tell the difference easily between a speed that is between the figures given by the range of film speeds on the camera's dial? By that I mean is it possible to easily see and appreciate the "improved quality of say an EI of 280 and either 320 or 250 which is what the film speed dials?
Ceteris paribus conditions being assumed, of course in such a test
pentaxuser
I don't think anyone's process control is tight enough to notice 1/6th of a stop (or whatever the math is for 1/2 vs 1/3 stop) from film to film and developing session to session. 1/3 of a stop will only show a difference to a densitometer and I don't believe that anyone will appreciate the difference in pictorial photography. And if what "makes" your picture is a third stop of exposure difference it must be a pretty boring picture.
As far as the whole film speed testing thing, in my experience the only difference you'll notice is in the confidence that you aren't leaving anything on the table. you'll ideally have complete faith that what you are metering is going to give you the tone that you have defined in your process. that confidence might make you more excited to photograph, and hopefully it alleviates any feeling of guessing if you aren't the type that likes to "guess" on pay per click film exposures.