Question about Tamron Cameras

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Have Canon 7D and Tamron 18-270mmm, purchased both in July 2010. AF has failed; motor is running but focus ring seems unattached to anything; I can turn off AF and can manually focus but the focus ring is free spinning. Last thing I shot a few days ago was some night sky on a tripod; camera pointing up - could this have cause something to detach? Any ideas?

Posted by mike_carico on

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4 Related Answers

Anonymous

  • 216 Answers

SOURCE: AF 70-300 causes error 99 in my Canon 300D

This is usually a torn flexible circuit or binding aperture in the lens. It'll have to go to a repair shop for replacement. About a $80 job.

Posted on Dec 06, 2006

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GoneToPlaid

  • 134 Answers

SOURCE: Detaching Lens Hood

I'm not sure of the exact model number of your lens, but the hood should have a bayonet flange and rotating it in one direction or the other should allow it to then simply pull off.

Posted on Apr 21, 2009

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MIke

  • 685 Answers

SOURCE: I am using a Tamron AF 18 - 250 mm lens on a nikon

Make sure the lens is set for the largest f number on the aperture ring. there may be a lock to prevent the ring from turning in the future. Locking the lens of the largest f number allow the camera to set the lens through the camera. This is normal on most of the newer cameras.

If the lens does not have a move-able aperture ring, then dismount and remount the lens, making sure the lens is completely mounted and locks into place, completely lining up the contacts inside. If this does not work The camera or lens may need servicing.

Posted on Nov 24, 2009

kakima

  • 102366 Answers

SOURCE: tamron 28-200 AF Aspherical LD. Does it have manual focus?

There should be a switch just in front of the back of the lens marked "AF" and "M". Set it to M for manual focus, AF for autofocus.

Posted on Jan 20, 2010

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1 Answer

I bought the new Tamron 20-200 lens and after trying it on my Canon 7D non of my lenses will focus on that camera. What has happened?


Sure you did not switch to manual focus while testing the Tamron? Sure all settings are correct?
If the Tamron still auto focusses on you 7D, check the forums about this. I know Nikon sometimes messes up the firmware, when a non Nikon lens is used, but not on all camera's. And not with every firmware.
I don't know the 7D enough to check more details, but check everything about the AF settings. I can't imagine your lens did something wrong with the camera.

Jan 07, 2015 | Canon Cameras

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Can Tamron 2 X converter C-AF 1 BBAR MC-7 mounted with Canon 100-400mm? Tks


As you can read in the Dpreview link the Tamron converter can work perfectly with the Canon cameras. Question is, will AF still work, because you have to multiply the aperture twice. So if your lens has f/1:5,6 that will become f/1:8. Most camera's can't auto focus anymore on F 8

link to Dpreview Tamron 2X converter

Oct 15, 2012 | Tamron F AF TELE-CONVERTER 2X C-AF1 BBAR...

1 Answer

My focus will not work on my tamron aspherical 18-200mm


Hi Missy - certain Nikon bodies lack the built in auto focus motor as a way to hold costs down and make them affordable. The problem is that any lens purchased for these bodies will need to include the motor - and adds the expense to the lens. Instead of paying for the motor once in the body, the owner will need to buy it in every lens purchased for that body. As of this writing, the Nikon bodies that lack an AF motor are: D5100, D5000, D3100, D3000, D60, D40X, D40.

When selecting a lens for one of the cameras listed above, you must choose the model for a Nikon that needs the AF motor built into the lens. Tamron sells lenses for these camera bodies and states they have "BIM" or "built in AF motor" and similar. In any case, regardless of lens manufacturer, you must purchases lenses that have the AF motor built into the lens, otherwise it will not be able to auto focus. Here is a site with a list of all lenses known to to have the AF motor built into the lens.

I hope this helps & good luck!

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I have a Tamron lense 18-250mmm for Canon. It does not focus with zoom use, iwith different Canon bodies , particularly with a focus on a light or low contrast point. Canon lenses do not seem to have this...


In low light situations, connect a speedlite flash to your body (e.g. 430EXII or 580EXII). These flashes emit a AF assist beam to assist focussing in low light situations.

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Tamron 28200mm f/3856 LD Aspherical IF LD 138 58


you may find a good camera shop can help you get some replacments for it from there repair chapy,

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Auto focus not working


Your Sigma 28-300mm doesn't have a HSM-motor as far as i know. When you switch it from MF to AF, you also have to disengage the manual focusing ring by pulling it towards the camera, or pushing it away from the camera. Using the AF without unlocking the manual focusing ring may damage the AF motor. 
I hope this helps, 
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4 Answers

Tamron 28-300mm Model 185D Auto Zoom on Nikon d40


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.

Apr 19, 2008 | Tamron 28-300 MM XR AF F/3.5-6.3 LD ASP...

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