Registered: 03/30/02
Posts: 42681
Loc: Dept. of Ruminant Procurement
I was given this old film SLR...
Lucky me, it is the same mount as my Sony camera and came with two lenses...
The lenses are a Sigma DL 75-300mm F4-5.6 Macro and a Minolta 50mm F 1.7
Everything was loose in a big case all these years. I trashed the old case. Other than some cosmetic scuffs, the lenses look and perform great. The 75-300mm has that push/pull style of zoom action. And it isn't very smooth.
The crop factor on my camera is 1.52x which makes the zoom lens a 114 - 456mm lens. While the 50mm is a 76mm on my APS-C Sony. What about the aperture? Does it get converted as well?
Registered: 11/09/00
Posts: 14597
Loc: Dark Side of the Moon
Light exposure doesn't change.
If you shoot FF at 55mm, your DOF is the same as shooting 83mm on crop if you stand in the same spot. Granted the crop shot will be tighter. If you move further back to get same field of view, that's when the DOF changes.
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