hello, just got the tamron 28-75 f2.8 today... still very inexperienced, so hoping anyone can help to see whether my copy is ok... or rather, performing as expected..
here are reviews im judging my lens upon..
100% centre crops (focus point just above the white oval sticker):
28mm f2.8, 28mm f4
28mm f5.6, 28mm f8
this lens known to be softer @ 28mm wide open, but by f4 supposed to sharpen a lot..
50mm f2.8, 50mm f4
75mm f2.8, 75mm f4
similarly for 50mm & 75mm, sharpness supposed to improve from f2.8 to f4 (though not so drastic)..
erm.. so is my lens' sharpness to par? or is there something wrong?