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Normal lenses are the ones with focal length roughly equal to diagonal of imaging surface (43mm on 35mm full frame, about 28mm on APS-C). Classic normal lenses are slightly longer (50...58mm on FF, 30...35 on APS-C).
2
votes
How do I compare two prime lenses of different focal lengths?
The primary difference between your lenses is the maximum aperture or lens speed. There is a huge difference between 2.8 and 1.8 and it is generally expected that the price will double for such an in …
2
votes
Is a Sigma AF 28-80 an useful addition to a Nikkor 35-105 macro?
For that small of a gain, you'd probably be better off with a wide angle prime lens. You gain a very minimal amount of additional range and if it is a lens designed for film cameras it is going to ha …