Time passes by

by clabacchio

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

23
votes
5answers
6k views

Are there general rules for selecting the correct shutter speed and ISO in manual mode?

I have purchased my first DSLR (a Canon 500D) and have been playing around quite a lot within the aperture priority mode, with auto shutter speed and ISO. Anyways as I would like to become a better ...
1
vote
2answers
618 views

What is the quantitative relation between f/# of the lens (aperture), exposure, and ISO?

Let's say we shoot with a DSLR camera and we have two interchangeable lenses. Lens #1 has aperture f/X, X between 1 and 2 (see below). Lens #2 is f/4.5. Same focal length and other characteristics as ...