angle of view of lenses in
2¼″ by 3¼″ photography

Focal lengths shown include those of all commonly available lenses.

Focal length,
millimeters
2¼ inch
side
3¼ inch
side
diagonal
47 63° 82° 94°
58 52° 71° 82°
65 47° 64° 75°
75 42° 57° 68°
90 35° 49° 58°
100 32° 45° 53°
120 27° 38° 45°
135 24° 34° 41°
150 22° 31° 37°
180 18° 26° 31°
210 16° 22° 27°
240 14° 19° 24°
300 11° 16° 19°

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