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Photography Q&A
Tamron 150-600mm g2 focusing issues
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<blockquote data-quote="Woodyg3" data-source="post: 671684" data-attributes="member: 24569"><p>If you haven't already, check the contacts on the lens and camera to make sure they are clean. I have heard of no autofocusing problems with the G2 version of this lens, and even the first version, which I own, focuses very well and only <strong>very</strong> occasionally refuses to focus. </p><p></p><p>You said that your 55-200 was not focusing properly, but now is. It's possible that there is an in camera issue. Try a rocket blower with the mirror down to clean dust out. The autofocus sensor can get goofy if there is a dust bunny on it. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Focus at longer distances can be tricky, too. Heat shimmer, humidity, and haze can all affect focus sharpness. Also, trying to achieve focus on a small object at a long distance is pretty tricky. Finally, remember that camera shake can greatly affect sharpness, especially when you've got the long, heavy lens all the way out to 600.</p><p></p><p>BTW, I don't think Nikon is specifically trying to handicap third party lenses. Tamron, Sigma, etc. are reverse engineering lenses, and so problems can naturally occur as a result. Since there have been no reports that I am aware of about the G2 150-600 failing to autofocus on Nikons, I don't think that is a concern at all. Tamron is making some great lenses these days, I hope you can get this sorted out!</p></blockquote><p></p>
[QUOTE="Woodyg3, post: 671684, member: 24569"] If you haven't already, check the contacts on the lens and camera to make sure they are clean. I have heard of no autofocusing problems with the G2 version of this lens, and even the first version, which I own, focuses very well and only [B]very[/B] occasionally refuses to focus. You said that your 55-200 was not focusing properly, but now is. It's possible that there is an in camera issue. Try a rocket blower with the mirror down to clean dust out. The autofocus sensor can get goofy if there is a dust bunny on it. :) Focus at longer distances can be tricky, too. Heat shimmer, humidity, and haze can all affect focus sharpness. Also, trying to achieve focus on a small object at a long distance is pretty tricky. Finally, remember that camera shake can greatly affect sharpness, especially when you've got the long, heavy lens all the way out to 600. BTW, I don't think Nikon is specifically trying to handicap third party lenses. Tamron, Sigma, etc. are reverse engineering lenses, and so problems can naturally occur as a result. Since there have been no reports that I am aware of about the G2 150-600 failing to autofocus on Nikons, I don't think that is a concern at all. Tamron is making some great lenses these days, I hope you can get this sorted out! [/QUOTE]
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Tamron 150-600mm g2 focusing issues
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