Why aren't there more f/1.0 lenses?

Started Nov 12, 2009 | Discussions thread
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biochemiker
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Why aren't there more f/1.0 lenses?
Nov 12, 2009

I am wondering why there aren't more fast wide angle lenses. It would seem like an f/1.0 lens would be fairly easy to make as the aperture of lenses 50mm and smaller would be the same as the focal length.

There must be an obvious reason why this is difficult because the market isn't flooded with 18mm f/1.0 lenses! (Or even sub f/1.0 lenses like the "famous" 50mm f/0.95 that I've heard about.)

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Canon EOS 5D Mark II Canon EOS 7D Canon EF 85mm f/1.8 USM Canon EF 500mm f/4.0L IS USM Canon EF-S 10-22mm f/3.5-4.5 USM +4 more
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