Quote:
Originally Posted by mattdm
Except, if you print both the 75mm-lens-on-35mm and the 50mm-on-1.5×-crop-dSLR image at the same size, the magnification has changed — by exactly 1.5×.
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Could you rephrase that, it sounds like you are saying that if you matched the field of view of 75mm on film to exactly the same field of view with a 50mm on a 1.5x crop body, and printed them both as an arbitrary large size with a hypothetically matching aperture and shutter speed, you'd get exactly the same picture, which you wouldn't.
What you get with a crop body is exactly what it says: a cropped version of what the same focal length would give you on a full frame sensor of the same quality.