Question about Tamron 70-300mm f/4-5.6 Di Zoom Lens for Canon AF Cameras
It will twist but wont zoom, the focus is working fine, it is only new and have only used it about five or six times can anyone help me? I havn't dropped it or anything.
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Posted on Jan 02, 2017
SOURCE: auto focus problem
My first suggestion is to send it back if it is under warranty.
The grease probably got so thick, from the cold, that it caused too much resistance for the auto-focusing mechanism. You probably have damaged the focusing mechanism in the lens. You cannot repair this, yourself. I don't know how cold is too cold but it really shouldn't have done that.... Tamron makes cheap lenses. Try and exchange it for at least a Sigma.
Posted on Dec 29, 2007
SOURCE: will not autofocus
According to the manufacturer the first thing you should try is cleaning the lens contacts with an eraser. If that doesn't work you could try removing the battery and reinserting it to reset the camera. It seems to me that if there was a compatibility issue going on you should have seen that from the start. As far as what lens you should buy both Tamron and Canon make very good lenses, but with Canon lenses you shouldn't ever have compatibility issues. I hope this helps!
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Posted on May 23, 2008
Autofocus function on the D40 only supports lenses with the
AF-S feature, which have an autofocus motor built into the lens,
instead of using an autofocus motor drive built into the camera.
The Tamron lens you have, does not have a built in motor and
the autofocus function relies on the motor drive in the camera.
It will not work with the D40 or D60, but it will work with other
Nikon digital SLRs, such as the D80. Need to get an AF-S
type lens or upgrade to different Nikon digital SLR. Unless
you do this, you will have to manually focus the Tamron lens.
All of the Nikon DX (for digital) series lenses are also AF-S
type, so they will work with the D40, which is designed as
an entry level digital SLR, therefore it is intended primarily
for use with DX lenses, which are typically sold in a kit with
the D40. Most common one is Nikkor 18-55mm DX AF-S.
Other Nikon AF-S lenses made for film cameras (FX type)
will also work with the D40, but these tend to be expensive
professional models. DX series lenses tend to be more
affordable. You might consider the 18-200mm DX AF-S
as an alternative to the Tamron, but these are not cheap.
Posted on Jul 05, 2008
not worth the effort - these are very complicated internal workings and even if you managed to disassemble the glass it would be difficult to know what is damaged without a 1:1 drawing of the internals of that specific piece of glass - plus you do not have a clean room - not trying to comment on your housekeeping but a dedicated clean room with a laminar flow work bench to keep out the FM you would add just by opening up said glass in a normal room - Pay the money if you love the glass - if not they make interesting and fun paperweights...
Posted on Apr 29, 2010
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