mopar_guy
Member
BTW, just how thin is the depth of field of that 250mm f2 wide open?![]()
That one is a by-product of a recent spending binge so I haven't really had a lot of time with it yet (a couple of rolls of slide film). One problem is bright/sunny conditions. The fastest shutter speed of the OM-4T is 1/2000 sec. With 100 ISO film the Sunny 16 rule tells us that f16 @ 1/100 sec. = f4 @ 1/1600 sec. and I've run out of shutter speeds by the time I get to f4. I have some Efke 25 and a roll of Panatomic-X in the camera right now. I will shoot this film today.

I have projected some of the slides and my first impression is that the lens is scary sharp and the DOF at the wider apertures is less than one foot at 50 feet. I don't really have any B&W paper bigger than 8x10 at the moment so I will probably crop some images to check sharpness.