Field of View

Comparisons

45mm Medium format vs 35mm Full frame

45mm Medium format and 35mm Full frame frame practically the same. The shapes differ: 45mm Medium format is 4:3, 35mm Full frame is 3:2.

Reference photo: Forest
A 45mm Medium format
B 35mm Full frame
The scene as framed by 45mm Medium format
A What 45mm Medium format sees
The scene as framed by 35mm Full frame
B What 35mm Full frame sees

The numbers

A 45mm on Medium formatB 35mm on Full frame
Focal length45mm35mm
Full-frame equivalent35.6mm35mm
Horizontal51.9°54.4°
Vertical40.2°37.8°
Diagonal62.7°63.4°
SensorMedium format 43.8 × 32.9 mmFull frame 36 × 24 mm
Crop factor×0.8×1
Aspect ratio4:33:2

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