Topic
lenses
2 posts tagged "lenses"
photographyastrophotography
Astrophotography without star trails: the 500 rule, the NPF rule, and a practical ceiling
Why stars smear, how the 500 rule and NPF rule cap your shutter, what declination and pixel pitch have to do with it, and how to get a number you can use on your next clear night. Includes our free calculator.
9 min read
photographycrop-factor
Sensor size and crop factor: why your 50 mm lens doesn't always feel like a 50
A practical look at crop factor, full-frame as a reference, and what really changes when you swap sensor sizes. Framing, depth of field, noise, and when the math matters in real shoots.
6 min read