Quote:
Originally Posted by alistairsam
Hi,
I had my first go at widefield last night with my canon 1000d and the 18-55mm lens.
didn't really check the f stop but now that you'll mention it, is there a relation between the fstop and the aperture and are both independent of each other (i'm guessing 18-55mm is the aperture size)?
bigger f stops would mean less light, longer exposures like in telescopes?
I'm new to photography concepts so lots to learn.
if I set the lens to 18mm and piggyback on an eq mount, would that be sufficient for a start at widefield?
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Aperture is your f stop, the higher the number the less light and longer exposure needed.
eg. f/1.4, f/2, f/2.8, f/4, etc.
http://en.wikipedia.org/wiki/Aperture
Your 18-55mm is your focal length range of the lens (determines your FOV) and yes 18mm is sufficient to start widefield photography.
