Fixed Lens                              % Flare
Canon FD 50 f/1.4 at f/2                   0.88
Canon FD 50 f/1.4 at f/2.8                 1.18
Canon FD 50 f/1.4 at f/4                   1.42

Zoom Lens
Soligor Zoom 55-135/3.5 at 55               1.6
Soligor Zoom 55-135/3.5 at 80              1.45
Soligor Zoom 55-135/3.5 at 135             1.87

Zoom Lens
Vivitar 85-205/3.8 at 85/3.8               2.34
Vivitar 85-205/3.8 at 85/8                 3.33
Vivitar 85-205/3.8 at 85/16                4.09
Vivitar 85-205/3.8 at 145/3.8              2.32
Vivitar 85-205/3.8 at 145/8                3.75
Vivitar 85-205/3.8 at 145/16               4.57
Vivitar 85-205/3.8 at 205/3.8              2.61
Vivitar 85-205/3.8 at 205/8                4.75
Vivitar 85-205/3.8 at 205/16               5.71

Zoom Lens
Voigtlander-Zoomar 36-82/2.8 at 36/2.8     1.92
Voigtlander-Zoomar 36-82/2.8 at 36/5.6      3.2
Voigtlander-Zoomar 36-82/2.8 at 36/11       4.5
Voigtlander-Zoomar 36-82/2.8 at 60/2.8     1.77
Voigtlander-Zoomar 36-82/2.8 at 60/5.6     3.09
Voigtlander-Zoomar 36-82/2.8 at 60/11       4.6
Voigtlander-Zoomar 36-82/2.8 at 82/2.8     1.57
Voigtlander-Zoomar 36-82/2.8 at 82/5.6     2.79
Voigtlander-Zoomar 36-82/2.8 at 82/11       3.9

Zoom Lens
Macro Zoomar 50-125/4 at 50/4              6.66
Macro Zoomar 50-125/4 at 50/8              5.97
Macro Zoomar 50-125/4 at 50/16             7.77
Macro Zoomar 50-125/4 at 85/4               4.4
Macro Zoomar 50-125/4 at 85/8              5.97
Macro Zoomar 50-125/4 at 85/16                8
Macro Zoomar 50-125/4 at 125/4             4.09
Macro Zoomar 50-125/4 at 125/8             6.16
Macro Zoomar 50-125/4 at 125/16            9.37

Zoom Lens
Zuiko 50-90/3.5 at 50                       1.8
Zuiko 50-90/3.5 at 70                       1.9
Zuiko 50-90/3.5 at 90                       2.5

Source: Popular Photography December 1973 p.240
Flare tested on-axis, without lens hood, and
wide open unless otherwise state…

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