Good for CH. He's right. I forgot about the DoF problem at 2.8. At 20
feet and 150mm the DoF is about 6" if you want enough detail for a large
print. About 12" is you come down from 4/3 resolution criteria to 35mm
resolution.... in other words don't enlarge much and tell the people
they can't move. :-)
Stick with the cheaper lens and f/5.6. You'll get double the DoF.
Chuck Norcutt
On 8/26/2014 7:03 PM, C.H.Ling wrote:
F2.8 could have DOF problem at this image magnification so the pro lens
may not help.
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