Four-thirds (or any crop) sensor compared to full sensor camera: question about the meaning of “doubling the effective focus length.”
90109
Are cropped images from a full-frame sensor equal quality to full APS-C images despite the lower resolution?
27664
Does lower resolution result in better signal-to-noise ratio, given the same sensor size?
21744
Focal length of an ellipse and related results
150402
Is it normal for focal length to change while focusing?
129284
Why no zoom lenses with a maximum aperture wider than f/2.8?
113839
How can I visualize or simulate the effect of different focal lengths?
59384
Do the same camera settings lead to the same exposure across different sensor sizes?
134974
What is the focal length on your typical cell phone camera?
8552
Which focal-length lens is usually used for portrait photography, and why?
38537
What is the relationship between ISO, aperture, and shutter speed?
19150
Why do mirrorless cameras have quicker autofocus than SLRs using live view?
81660
Does autofocus work better with f/2.8 lenses vs f/4 or slower?
19362
Can a smaller sensor's "crop factor" be used to calculate the exact increase in depth of field?
62822
How can lens cause consistent front or back focus?
111238
Can you extend a Canon Rebel T5's exposure length?
153578
Variable focal length for macro lenses?
7664
Why are effective pixels greater than the actual resolution?