Originally posted by PBandJ Vivtar 75-205/3.8 & K01
I don't know why I can't get mine razor sharp like you guys do. Maybe because they are handheld? It was either fully wide open or maybe 2 stops down @ 1/320 sec, ISO 100, 205mm. Aperture was probably a factor, but I wanted the shallow DOF
Manual Focusing is an art
But it looks like you're getting there, practice makes perfect. Even handheld with Shake Reduction, your Shutter Speed of 1/320 may not have been fast enough OR be careful where you set your SR... this too is a form of art
I do have the 75-205/3.8 mine is a push pull zoom and is called "Macro Focusing Zoom" and it is very sharp throughout the focal length even wide open.
K10D + Vivitar 135/2.8 Auto Telephoto Close Focusing (m42)