user12343 said:interesting read, student :thumbsup:
i have some queries that crop up. suppose if the film loaded is a ISO100 film and somehow or rather, i've set the cam to shoot at ISO200 or higher, and that is likely to result in underexposures.
(1) if i had realized the wrong ISO settings used and tell it to the shop before developing, what are the countermeasures that they'll do to restore back to proper exposure of the negatives?
(2) if i did not tell them about this wrong ISO settings and they just process under default settings, the negatives will look underexposed. is there still any remedy (such as lengthening the exposure time) that when printed on paper, it'll still look as a properly exposed?
1) Student has answered yr question with lots of technicality. In short, its known as push processing.
2) er... it depends on how much underexposed. in B & W, i managed to print with 2 stops either over or underexposed but image turn out flat, as in low contrast. 1 stop difference not so bad. as for color, very small margin. 1 shop difference n the pic's flat. with some adjustments, it can still look properly exposed but image quality will definately drop.