Oly 17mm F1.8 DOF scale

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BobT3218 Senior Member • Posts: 1,699
Oly 17mm F1.8 DOF scale

The DOF scale on this lens is very small and difficult to read but I accept DOF is a subjective matter so not really a big deal.  However, I note that using a couple of deferent DOF calculators and tables, the readings I get are sometimes significantly different than what the scale gives.  One would have thought the lens manufacturer would use accepted definitions of DOF.  However, could it be that the scale on this lens and maybe others, is not calculated but tuned to the particular lens design which may differ from the theoretical?

 BobT3218's gear list:BobT3218's gear list
Olympus E-M1 Olympus M.Zuiko Digital 45mm F1.8 Olympus M.Zuiko Digital ED 60mm F2.8 Macro Olympus 12-40mm F2.8 Pro Olympus E-450 +8 more
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