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M.Zuiko 40-150mm F/2,8 lens + M.Zuiko MC-14 Teleconverter for Close-up Photography

Started Apr 11, 2016 | User reviews thread
OP JeanPierre Martel Veteran Member • Posts: 3,304
Re: M.Zuiko 40-150mm F/2,8 lens + M.Zuiko MC-14 Teleconverter for Close-up Photography

woodybrown wrote:

It appears that you came up with a greater DOF for the 210mm thru an error in the distance you plugged in for the 210mm to get the same magnification as the 60mm. It should be 210 rather than 250cm.

M (FOV) = FL/Distance = 60mm/600mm = 210/2100.

At 210cm and 5.6 a 210mm FL gives the same DOF as the 60mm at 60cm which is 1.6cm according to the Cambridge in Colour online calculator that I am using.

My observation was empirical. Your comment is more scientific and more precise.

So thanks for your valuable comment. I appreciate.

 JeanPierre Martel's gear list:JeanPierre Martel's gear list
Olympus E-M5 II Olympus M.Zuiko Digital ED 75mm F1.8 Leica Nocticron 42.5mm Olympus 40-150mm F2.8 Pro Olympus 8mm F1.8 Fisheye Pro +17 more
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