PinPlus family of cameras
The above table shows the relationship of all the PinPLUS cameras by focal lengths, picture compression or expansion, angle of view, relative lens size as compared to 35 mm lens on a 35 mm camera.

PinPLUS 64mm, PinPLUS 128mm, PinPLUS 256mm, PinPLUS 512mm, and PinPLUS 1024mm are twice or half the focal length for each adjacent PinPLUS camera, therefore the image on the negative is also about twice or half the size for each adjacent PinPLUS camera.

The PinPLUS 128 and PinPLUS 256mm are the most versatile cameras for focal length.

CAMERA BY PART NUMBER FOCAL LENGTH INCHES RATIO

subject:film

 VIEW IN DEGREES DIAGONALLY VIEW IN DEGREES HORIZONTALLY VIEW IN DEGREES VERTICALLY EQUIVALENT 35MM LENS
PinPLUS 48mm 1.9 1:0.375 116 106 93 18
PinPLUS 64mm 2.5 1:0.50 100 90 72 24
PinPLUS 128mm 5.0 1:1.0 62 53 43 50
PinPLUS 256mm 10.1 1:2.0 33 28 22 100
PinPLUS 384mm 15.1 1:3.0 23 19 15 150
PinPLUS 512mm 20.2 1:4.0 17 14 11 200
PinPLUS 640mm 25.2 1:5.0 14 11 9.0 250
PinPLUS 768mm 30.2 1:6.0 11 9.5 7.5 300
PinPLUS 1024mm 40.3 1:8.0 8.6 7.1 5.6 400
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