Practice question · True or false
Cropping a full 35 mm frame to a square discards one third of the negative area.
Hints
- Work out both areas in square millimetres.
- Compare 24 by 36 with 24 by 24.
Show the answer
True
Why
True. 24 × 36 = 864 square millimetres; 24 × 24 = 576, which is exactly two thirds of it. The third that goes takes resolution and enlargement quality with it, which is why a square picture is better shot on a square format than rescued from a rectangle.
Practise The Frame: What Is In and What Is Out
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