Wednesday, August 10, 2011

F Stop in Photography



Standard full-stop f-number scale

Including aperture value AV:
AV −2 −1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
f/# 0.5 0.7 1.0 1.4 2 2.8 4 5.6 8 11 16 22 32 45 64 90 128

These f numbers increase by the following increments:

f1.0, f1.4, f2.0, f2.8, f4.0, f5.6, f8, f11, f16, f22, f32, f45, f64, f90


Typical one-half-stop f-number scale

f/# 1.0 1.2 1.4 1.7 2 2.4 2.8 3.3 4 4.8 5.6 6.7 8 9.5 11 13 16 19 22

Typical one-third-stop f-number scale

f/# 1.0 1.1 1.2 1.4 1.6 1.8 2 2.2 2.5 2.8 3.2 3.5 4 4.5 5.0 5.6 6.3 7.1 8 9 10 11 13 14 16 18 20 22

Typical one-quarter-stop f-number scale

f/# 1.8 2 2.2 2.4 2.6 2.8 3.2 3.4 3.7 4 4.4 4.8 5.2 5.6 6.2 6.7 7.3 8 8.7 9.5 10 11 12 14 15 16 17 19 21 22

Source Wikipedia

Related Post:
Understanding F-Stops on Photography Bokeh Comparison Beetwen f/2 ; f/2.8 ; f/3.5 using Nikon AF 85 f/1.8 D and Ai 135 f/2.8

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