Well these say this is. Is there anything faster?
http://en.leica-camera.com/photograp...nses/5915.html
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17th July 2011, 09:45 AM #1
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How can a lens be faster than f1?
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17th July 2011, 10:17 AM #2
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Re: How can a lens be faster than f1?
The Canon 7 claimed a 50 mm f 0.95 lens when it was introduced in 1961.
For a 50 mm lens to be f 0.95 the effective maximum diameter of the aperture must be 52.63 mm.
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17th July 2011, 10:28 AM #3
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Re: How can a lens be faster than f1?
I see, so just wider than the focal length.
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17th July 2011, 11:18 AM #4
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Re: How can a lens be faster than f1?
Yes, as the F-number is the focal length of the lens divided by the diameter of the diaphragm
Originally Posted by arith
I see, so just wider than the focal length.
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17th July 2011, 11:47 AM #5
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Re: How can a lens be faster than f1?
I was just interested since I read the exif of a friends pic of a duck to find 1000mm @f8 on a canon 1D, so I went looking and found that strange thing on the way.
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17th July 2011, 07:32 PM #6
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Re: How can a lens be faster than f1?
Well, there are those Zeiss f/0.7 lenses that Kubrick used for Barry Lyndon. Originally Posted by arith
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18th July 2011, 05:55 AM #7
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Re: How can a lens be faster than f1?
Definitely Kathy. I didn't ever imagine anything like this could exist.
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