- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Looking at a photo of the Tokina 100mm f/2.8 AT-X M100 AF lens, I noticed that the barrow of the lens has two lines engraved behind the focusing ring labeled AF and MF. Are you sure that the lens is set to AF? If it is in fact in the AF mode, you probably have a defective lens. I would return it and ask for a replacement or refund.
Unless you have a lens collimator and other equipment necessary to ensure proper alignment when reassembling the lens, don't do it yourself. Take it to a camera shop and have a properly trained and equipped professional do it.
You would have to disassemble the lens barrel to get to the zoom sliders, and lubrication is not likely the problem anyway. The zoom mechanism uses nylon bushings sliding in a groove, and zoom problems are usually due to wearing/cracking of those bushings.
If it's still in warranty, send it in. Otherwise, the cost of repair probably exceeds the value of the lens. Sorry.
Unless you have a lens collimator and other equipment needed to ensure proper alignment when reassembling the lens, take it to a good camera shop and have a properly trained and equipped professional clean it.
Dust and other small debris is drawn into the lens due to the vacuum
created when zooming in. You can reduce the chances of drawing in dust
and debris by slowly zooming in as opposed to rapidly zooming in.
Now that you how it gets in and how to help prevent it from getting in
again, comes the bad news. There's really no way to disassemble the
lens to clean it up at home. These are precision optics with many small
moving parts that really need to be serviced in a dust free
environment. You best bet it to contact Tamron (or authorized servicer)
to learn how much it will cost to be cleaned by them. This will keep
the warranty (if any) intact, too.
As I understand it, Sony bought Minolta, lock, stock, and barrel. Theoretically the lenses should fit and may work on manual, but I'm very sure they will not totally work on sony digital cameras. I wouldn't even try to fit them as the autofocus system on the camera may be damaged.
I have one that had the same problem...it needs to be re-chipped to work with the newer camera's. It worked great on my N80 just not on my D-50...I got the F-- error when the exposure meter shut off. Send it to thk photo to be rechipped....takes about 3 - 4 weeks, gets cleaned and re-calibrated for about $83.