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Telephoto
Autofocus issues with sigma 150-500mm
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<blockquote data-quote="hark" data-source="post: 627235" data-attributes="member: 13196"><p>Like Jake said, try mounting it on a tripod (using the lens' tripod foot, not on the bottom of the camera) and see if pressing the lens and body together slightly will allow you to take a photo. It's possible the mount on the lens is slightly bowed...or the contacts need cleaning as was mentioned. And if there are any tiny screws on the lens' mount, make sure they are snug. </p><p></p><p>Most likely it isn't the fault of your camera so I doubt you'd need a new one. Problems can come up if people use long lenses mounted on a body AND if they carry the combo by holding the BODY. The mounts aren't designed for all that stress. Always carry any lens/body combo by whichever is heavier. And when a lens is heavier than the body, ALWAYS mount the combo on a tripod using the tripod foot...not the hole on the bottom of the body.</p></blockquote><p></p>
[QUOTE="hark, post: 627235, member: 13196"] Like Jake said, try mounting it on a tripod (using the lens' tripod foot, not on the bottom of the camera) and see if pressing the lens and body together slightly will allow you to take a photo. It's possible the mount on the lens is slightly bowed...or the contacts need cleaning as was mentioned. And if there are any tiny screws on the lens' mount, make sure they are snug. Most likely it isn't the fault of your camera so I doubt you'd need a new one. Problems can come up if people use long lenses mounted on a body AND if they carry the combo by holding the BODY. The mounts aren't designed for all that stress. Always carry any lens/body combo by whichever is heavier. And when a lens is heavier than the body, ALWAYS mount the combo on a tripod using the tripod foot...not the hole on the bottom of the body. [/QUOTE]
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Lenses
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Autofocus issues with sigma 150-500mm
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