Everyone should post the serial number (\"X\" the last few digits if you want to) of their good or bad 50, maybe it\'s just the early production ones.
Mine is serial 1007xxx and it tested great on my 1Ds2 and seems fine on my 40D (though I didn\'t precisely test it on that body).
Some 100% crop focus test shots using 1Ds2:
At 25 feet (red arrow pointing at 1/4\" focus target)
At 5 feet
Disregard exposure, which was +1EV.
Focus seems right on the money! Definitely need your focus target to stand out against the background though, initially I put the target on a cinder block seam and the AF picked up the seam instead of the target.
Note the purple fringing before focus plane and green after, to be expected I suppose with CA of about 1/3 pixel. Very nice lens though, well-built and solid, good match for the 1Ds2.
Everyone should post the serial number (\"X\" the last few digits if you want to) of their good or bad 50, maybe it\'s just the early production ones.
Mine is serial 1007xxx and it tested great on my 1Ds2 and seems fine on my 40D (though I didn\'t precisely test it on that body).
Some 100% crop focus test shots using 1Ds2:
At 25 feet (red arrow pointing at focus target)
At 5 feet
Disregard exposure, which was +1EV.
Focus seems right on the money! Definitely need your focus target to stand out against the background though, initially I put the target on a cinder block seam and the AF picked up the seam instead of the target.
Note the purple fringing before focus plane and green after, to be expected I suppose with CA of about 1/3 pixel. Very nice lens though, well-built and solid, good match for the 1Ds2.
