Question about Canon Sigma 28-80mm f/3.5-5.6 II AF Lens for All EOS Cameras

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28-80 mm sigma won't auto focus

This lens won't auto focus but the 75-300 mm sigma will with the same settings on a sony alpha 700 camera...????

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  • Christoffer Wallstenius

    Have you made sure that the focusing mode selector on the lens is set to AF?

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  • 117 Answers

The lens may not be a dynex type so it wont work on your 700

Posted on Aug 08, 2009

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1 Answer

Is the Sigma Telephoto 400mm f/5.6 APO AF lens compatible with the Sony alpha camera?


Sigma makes their lenses with a variety of mounts. A lens with a Canon mount, for example, will not fit onto a Sony camera. Assuming you get the Sigma lens with a Sony mount then yes, it will be compatible with the Sony alpha.

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I have been offered a SiGMA 400mm F/5.6 manual lens for a minolta mount. Will it fit my camera? Cheers Pete


Minolta had two lens mounts. One for manual focus SLR film cameras and one for Auto Focus SLR Maxxum film and digital SLR cameras. Sony uses Minolta Maxxum lens mount.
If the Sigma 400 f5.6 lens was made for Minolta X-700 series, XG, series, XD series, SRT series, then it will not fit on your camera.


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Lense will not focus manually, only on auto focus, using a sony alpha dslr


Having gone over a month with no response, I assume this is no longer a problem.

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I have a Quantaray 70-300 f1:4-5.6 LDOMacro. I have been using it with Minolta QTsi Maxxum SLR. I am looking into getting a Digital SLR that I can use my lens with. Is there one out there.


http://shop.ebay.com/items/_W0QQ_nkwZminoltaQ20canonQ20
adapterQQ_armrsZ1QQ_fromZR40QQ_mdoZ

here is a link to an ebay search for minolta to canon eos adapter, they sell for just about every camera. i know it sucks, buying a new camera that wont work with your favorite lens, but i think you might be better served focusing (couldnt help myself) on camera features and pricing. i own a canon dslr and love it. sigma has a cool dslr. it has a three layer image sensor, with a removable on sensor ir filter. the ir filter thing is really cool.

Dec 16, 2008 | Quantaray AF 70-300mm f/4.0-5.6 High Speed...

1 Answer

Sigma 70-300 mm lens wont focus


I was focusing to close to the subject & too much glare from a church window.

Sep 26, 2008 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

1 Answer

Poor focus


Are you using a DX lens. Do you know if you have the camera's auto focus set to AF (auto focus) or M (manual)? There are many things that effect the focus and as an added note, any shots over 1/60 shutter speed in normal light should be in focus without the need of a tripod.

I shoot a D80 and a D70 and I have excellent results and very clear pictures, I'd be will to bet that either your lens is incompatible with the camera or it's just a setting. I'd be happy to help if you could give more info to your settings.

Jul 18, 2008 | Nikon D80 Digital Camera with 18-135mm...

1 Answer

Not working with Sony Alpha 100


well after a week in the shop it came back working. the guy at the shop could only tell me that the repair people had fixed a problem in the auto focus (he had no other information). So the solution here is going to a place to repair your lens. if someone finds the cause of this problem it would be great

Feb 25, 2008 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

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Auto focus will not focus. lens problem or camera problem?


A dirty filter, front, or rear optic can cause the lens to seek

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Trouble focusing with sigma 70-300 DL macro super lens


It will not focus on anything closer than 5 feet.

(From Sigma lens literature)
Capable of macro photography, this lens has a 1:2 maximum close-up magnification at the 300 mm focal length. It's the ideal high performance lens for portraits, sports photography, nature photography, and other types of photography that frequently use the telephoto range. It also has a switch for changeover to macro photography at focal lengths between 200mm and 300mm with a maximum close-up magnification from 1:2.9 to 1:2. The minimum focusing distance is 1.5m / 59 in. at all zoom settings.

Dec 25, 2007 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

1 Answer

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.

Dec 24, 2007 | Tamron 18-250mm F/3.5-6.3 AF Di-II LD...

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