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Lenses
Telephoto
200-500mm question
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<blockquote data-quote="Metal Jacket" data-source="post: 604930" data-attributes="member: 43028"><p>For long lenses I usually take a box with a bar code on it and photograph it at -10/-5/0/+5/+10. at about 40 ft away</p><p>At least 1/500 and f 5.6. Then examine the bar code on your computer at 100% and you will soon see where you are . Even being out by 2 can make a big difference. Then try photographing distant television antenna to confirm.</p><p>Do all this in JPEG at sharp +9 for consistency. Check again after about 1000 shots as the lens focus mechanism runs in /becomes freed up and the FFA changes ..some lenses more than others.</p><p>There is automatic fine focus adjust on the D500 but I am told its not ultra accurate....</p></blockquote><p></p>
[QUOTE="Metal Jacket, post: 604930, member: 43028"] For long lenses I usually take a box with a bar code on it and photograph it at -10/-5/0/+5/+10. at about 40 ft away At least 1/500 and f 5.6. Then examine the bar code on your computer at 100% and you will soon see where you are . Even being out by 2 can make a big difference. Then try photographing distant television antenna to confirm. Do all this in JPEG at sharp +9 for consistency. Check again after about 1000 shots as the lens focus mechanism runs in /becomes freed up and the FFA changes ..some lenses more than others. There is automatic fine focus adjust on the D500 but I am told its not ultra accurate.... [/QUOTE]
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200-500mm question
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