
Jackson, US
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Ah yes, much better. I had two d200 bodies and I never felt the images were terribly sharp when using them with my 200-400 VR. I spent most of the year complaining to my mentor. When the D300 came out, the very first thing I did was try out the AF Fine Tuning. Mine worked best on both of my D300 bodies at +8. Finally, my 200-400 was sharp. Amazingly sharp!
When I brought the new D7000 home, I assumed it needed the +8 adjustment since that setting worked on both D300 bodies. All photos at at that setting were very soft. I set it back to 0 and it was a bit sharper, but I wasn't satisfied. Eventually, I set the tripod up and shot at a license plate across the street at about 75 feet at ISO 200 , in Aperture priority at f/7.1 or f/8. I shot two at -20, two at -15, two at -10, and so on up to +20. In between each pair, I aimed high on the rear hatch and centered over the S on SUBURU to help divide the shots. On the next pair of shots, I centered on the U and so forth. When in Lightroom, I labeled each one with -20 thru +20 and deleted the softer of each pair. It might not replace one of the new calibrating systems, but it did give me some way of telling where my lens was focusing best. In my case, I needed to go to -20 to get shots even close to sharp. I believe I needed to go to -25 or even -30, but it only goes to -20. I put my D300 on the same tripod with the same lens at the same distance and tried it just to have something to compare. The D300 was still sharper than the best one I could get with the D7000. Later, I did a similar test inside with my 24-70 AFS lens and it worked best at a setting between -15 and -20. At -17, I finally saw what other people were raving about on this forum...sharp photos and the ability to use the high ISO.
The first set of tests were shot with RAW and opened with LR 3.3 RC. Someone on this board mentioned the possibility of Adobe converter not converting as sharp as it shouldor will. The last group were shot with JPG, and looking back, I might have done the first tests with high quality JPGs to eliminate one variable. (The JPGs would all be affected by the in-camera settings for sharpness, saturation, contrast, and so forth, but at least all be affected the same) And, some of the people complaining of softness, blaming LR's 3.3 converter, might need to adjust their AF Fine Tuning settings in the camera. That's just speculation on my part now.
This thread might help a few people having similar sharpness issues. I read this forum religiously when I had the D7000 camera hoping to find others going through the same issue of poor focus. A quick couple of layman tests (just like your squirrel photos above) might help solve the issue quickly for others. I am about ready to spend the $150 for the calibration kits as it appears AF Fine Tuning is going to be a necessary step with all new cameras. At least Nikon now includes the adjustment feature in the new bodies.
M Jackson Jackson Hole, WY M. Jackson Jackson Hole, WY
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