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<blockquote data-quote="gustafson" data-source="post: 561591" data-attributes="member: 40735"><p>I'd been having problems getting sharp shots with my 105 f/2.5 Nikkor-P (Sonnar type) (<a href="http://nikonites.com/prime/33627-random-blurry-images-manual-105-f-2-5-nikkor-p-d3300.html#axzz4B7iDlggL" target="_blank">http://nikonites.com/prime/33627-random-blurry-images-manual-105-f-2-5-nikkor-p-d3300.html#axzz4B7iDlggL</a>), so I ended up returning it and purchased the 105 f/2.5 AI-s instead, hoping it was a better copy. I only just got around to playing with it, and it feels like deja vu all over again! I took some sample shots of a subject (a piece of mail) 10-15 feet away using my D7100 in manual mode, and my keeper rate was pitiful due to shots that were out of focus. I took a few shots with other manual lenses (75-150 f/3.5 E, and 135 f/2.8 Q), and got significantly better keeper rates, so it seems like the 105 f/2.5 is just more demanding on technique. I plan to spend some more time troubleshooting this issue and report my progress in this thread. Meanwhile, any tips on taming focus on the 105 f2.5 would be appreciated!</p></blockquote><p></p>

[QUOTE="gustafson, post: 561591, member: 40735"] I'd been having problems getting sharp shots with my 105 f/2.5 Nikkor-P (Sonnar type) ([url]http://nikonites.com/prime/33627-random-blurry-images-manual-105-f-2-5-nikkor-p-d3300.html#axzz4B7iDlggL[/url]), so I ended up returning it and purchased the 105 f/2.5 AI-s instead, hoping it was a better copy. I only just got around to playing with it, and it feels like deja vu all over again! I took some sample shots of a subject (a piece of mail) 10-15 feet away using my D7100 in manual mode, and my keeper rate was pitiful due to shots that were out of focus. I took a few shots with other manual lenses (75-150 f/3.5 E, and 135 f/2.8 Q), and got significantly better keeper rates, so it seems like the 105 f/2.5 is just more demanding on technique. I plan to spend some more time troubleshooting this issue and report my progress in this thread. Meanwhile, any tips on taming focus on the 105 f2.5 would be appreciated! [/QUOTE]

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