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Forum: Sony Alpha dSLR / Konica Minolta dSLR, Sony SLT Dec 24, 2006, 5:01 PM
Replies: 66
Views: 11,449
Posted By bernabeu
meanstreak, the difference between f2 and...

meanstreak,

the difference between f2 and f2.8 is a factor of two

the 'doubling' scale is:

f1.1 - 1.4 - 2.0 - 2.8 - 4.0 - 5.6 - 8.0 - 11.0 - 16.0 - 22.0 - 32.0 - etc

so, a prime lens...
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