Originally posted by axl could somebody post a pics from the same spot of the same subject, say 2-3m away, Helios w F50/1.7 (any SMC50 for that matter) at same f stop? I'd just love to visualise the difference in FOV/DOF.
Many thanks
Peter
Ask and you shall receive...
Distance: 1.63m
Aperture: f/2.8
Focus on Navajo clay pot
KMZ Helios 44M 58/2 Pentax-M 50/1.7
I attempted to upload the full resolution versions, but Flickr thought otherwise
Here are full resolution center crops:
KMZ Helios 44M 58/2 Center Crop Pentax-M 50/1.7 Center Crop
As expected, the DOF is quite a bit less with the Helios due to the higher magnification. There is also a significant difference in FOV; probably more that most of us would have expected give the similarity in focal length. It is also interesting to note the falloff in edge sharpness with the Helios at this aperture. It will outperform the Pentax at f/2 for center sharpness, but needs to be at about f/4 before the edges fall into line.
Steve
P.S. I applied a small exposure correction in PP to the Helios version to bring its brightness more in line with its partner. The light changed between shots.
P.P.S. No, I do not usually stack bowls and pots on my dining room table...