Recently I went out to shoot when it was snowing. I was playing around with different aperture sizes and exposure times. What I have noticed that the wider the aperture, the more snow I can capture compared with having a small aperture and longer exposure.

Why is this?

I've attached some examples (all with 100 ISO and 50mm):

f/3.2 @ 0.5sec
--------------

[![](https://i.stack.imgur.com/kg9Ar.jpg)](https://i.stack.imgur.com/kg9Ar.jpg)

f/14 @ 4.0sec
-------------

[![](https://i.stack.imgur.com/IVyNv.jpg)](https://i.stack.imgur.com/IVyNv.jpg)