 Christie R. Bielss |
Problem with Auto-Focus I am having problems with my Nikkor AF 70-300mm VR lens' auto-focus. It will auto-focus on an image within 10 feet - 1 time only - and then won't auto-focus again. It also will not auto-focus on anything in the distance at all. I have a Nikon D80 and have been using this lens for nearly a year. I checked the Nikon website, but nothing is noted in their problems/solutions area. Any info anyone could share would be of great help! Thanks!
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Jon Close |
I can't think of a reason other than bad communication between the camera and lens. The usual checklist would be: Check that the "M/A - M" switch is fully on "M/A", and that the "AF - M" switch on the D80 is fully on "AF" with AF-A, -C or -S selected. Make sure that the contacts on the lens and camera mount are clean, and that the lens is fully and securely mounted and the lock-pin clicks in.
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Allen M. Aisenstein |
Hi Christie, If the previous answer you have been given doesn't solve your problem call 1-800-Nikon-US. Ask for customer technical support. They will be able to help you. Good luck.-Allen
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Dale M. Garvey |
You are not alone. Had same problem with 80-200 S. It would stop focusing. Found that I could focus on something in the foreground and it would start focusing again. The problem continued with all my cameras so figured it was the lens. Nikon no longer repairs my model so good luck.
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Christie R. Bielss |
Well, I've tried everything and nothing is working. My other 2 lenses work perfectly without any of these glitches - so I guess there must be something wrong with the auto-focus motor or whatever gizmo controls that. I have discovered that I can use the lens in full manual mode - so it definitely narrows the problem down to auto-focus only. Thanks for the Nikon USA phone number Allen, looks like I'm going to be using it. PS - Glad I insured the lens under my homeowner's policy against all problems!
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- Gregory A. Ulscht Contact Gregory A. Ulscht Gregory A. Ulscht's Gallery |
I have that lens and had that problem. Had to send it out for repair now all is fine.Greg
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Roy Blinston |
I also had this problem on my Canon.... until one day I realised my "switches" were inbetween the settings. It's easy to do. Make sure the switches on the lens for AF/MF are clearly set to the right or left. I also have a Motor Drive, with another switch for portrait camera holding... and this switch also sometimes sits in the middle... created with general movement of the camera in and out of my bag and general use. It sounds silly, but it's easy to do.
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Robert |
I have acquired a Tokina 35-105mm F/3.5-4.3 lens. Explain how this lens is set to use in the Macro Mode, Normal, wide angle,(35MM),105mm, Zoom process, etc. Comments from users will be appreciated Thank You,
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Robert |
I have acquired a Tokina 35-105mm F/3.5-4.3 lens. Explain how this lens is set to use in the Macro Mode, Normal, wide angle,(35MM),105mm, Zoom process, etc. Comments from users will be appreciated Thank You,
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Jon Close |
Robert, I'm not familiar with the old Tokina 35-105 f/3.5-4.3 specifically, but generally: I think your Tokina is a "one-touch" zoom - there is one wide ring that you push/pull to zoom and turn left/right to focus. The zoom settings are marked on the barrel - 35mm, 50mm, 70mm, 105mm. There will be a straigth white line running the length of the inner barrel, it points to the focus distance on the back edge of the zoom/focus ring. There may be one or more curved lines next to it. That line points to the distance on the focus scale that is the limit of depth of field for a specific aperture (which should be etched next to it, maybe "f/8"). "Macro" refers to the range of closest focus. The "normal" focusing range may be from 5 feet to infinity, and in the "macro mode" the focus ring can be turned beyond the normal range to allow focus as close as maybe 1 foot. On some lenses the macro focusing range is only available in when the lens is at a certain focal length, either the longest (105mm) or the shortest (35mm). There may (or may not) be a pin or button to push while turning the focus ring that allows it to turn into that macro focusing range. Does that help?
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Roy Blinston |
I think Jon has explained it quite remarkably, especially considering he cannot "see" the lens in question. Maybe it would be a good idea if Robert was to post some pics of the lens, especially with close-up shot of the numbers/markings on the lens barrel.
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