Tagged Questions
-1
votes
2answers
90 views
slr 100mm to 300mm vs 10x 20x [duplicate]
SLR zoom capacity is described in term of mm instead of x like 4x, 8x etc. What is the difference? How can we convert mm into x.
10
votes
2answers
287 views
Max aperture on zoom lenses - stepwise or linear?
When zooming with lenses without a fixed max aperture, the change in aperture* that the camera displays is stepwise, usually in steps of thirds. But, is the max aperture really the same all the way as ...
