Is the actual size of the aperture important for low light photography?
New into photography and I have a question on lens choice for low light situations.
- I have a choice between 28mm f/2 and 35mm f/2.
- Actual aperture diameter of the aperture is focal length divided by f stop.
- So the max possible size of the lens aperture for 28mm is 14mm and for the 35mm is 17.5mm. The area then of the 35mm is a little over 50% larger than the 28mm.
So, is it safe to say that the 35/2 will let in more light than the 28/2 at f/2?
It seems like something that's well understood, but I'm not using the correct search terms or it's something really obvious that I'm missing.
Posted Aug 8, 2025, 9:12 PM UTC
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