Question about Sigma Zoom Tele 135-400mm f/4.5-5.6 APO Asphrical Auto Focus Lens

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Sigma auto focus 1:3.5-4.5

I recently purchased a 'sigma auto focus 1:3.5-4.5' from ebay. the lens works perfectly but the switch between manual and automatic focus won't budge from AF to M. is there a button or something to make the switch move or is it busted?

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Hi    The switch is held on by two screws you can remove the screws    and the switch will fall off it will need cleaning 

Posted on Dec 13, 2008

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Sigma lens manuals


Chuck, sorry for the late response. Last days I had to work through several hundred anonymous questions. Most irrelevant and not complete, so I could not answer most of them, but I had to read them all.
Sigma, does not have a service, where you can download a manual. But the manuals from Nikon, most of the time don't tell anything about how to use the lens.
I found a page with all specs. The link is down here.

I have to guess why you did put the question here in the first place. I think because you have a Nikon camera without a focus motor. Like a D3x00 or the D5x00 or a D40 or D60. (for the x you can add 0 1 2 or 3)
If you have one of these camera's the lens can't be used with auto focus You only can use the lens in manual focus. Most other camera's from Nikon, like D80 D90 D7000 D300 and more expensive, all do have a focus motor and can work with this lens in full automatic focus mode.

50mm F2 8 EX DG Macro

Jun 27, 2014 | Sigma Camera Lenses

1 Answer

I have sigma 70-300mm lens. But its autofocus mode is not working.please suggest solutions....what i can do?


You have not supplied enough information, however with the Sigma lenses here are a few things that could be a problem.

Is the switch from auto to manual focus set to auto focus.

Is the lens the proper mount for the camera it is installed on (meaning have you used an adapter to go from a Nikon to a Canon mount?) if so then there will be no electronic communication and the lens will only function in manual focus mode.

Is the lens compatible with the camera model? (meaning some newer cameras set the lens aperture in the camera while some older lenses set the aperture on the lens.)

Part 1 of 2 Have you installed an older "film" lens on a newer version digital camera?

Part 2 of 2 Have you installed a digital full frame lens on a Canon "S" mount with the APS size sensor with the 1.6 focal factor?

Have you changed the camera model to a newer Canon EOS

Have you updated the camera firmware recently?

Have you lightly polished (cleaned) the contacts between the camera and lens?
Have you received an error code 99?
Cleaning the gold contacts on the lens and camera body can be done with a clean pencil eraser and lightly polish the matting surfaces making sure no dust gets into the back of the lens or the camera body. Hold the camera lens mount down while lightly polishing the contacts same with the lens. Do not wipe clean with a facial tissue or use any type of liquid cleaner.

Also third party lenses like Sigma often do not have the compatible electronic "chip" to properly communicate with all Canon EOS cameras. Meaning if you had the lens on a Canon EOS 20D and then put it on a Canon 50D chances are it won't work.

Is the lens properly locked onto the camera body dismount and remount the lens generally solves this problem.

If non of the above isn't the problem then a trip to a repair center is needed.

May 03, 2011 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

2 Answers

Sigma 70-300mm lens defaults to manual focus


It will default to manual through the viewing screen. It will only work on automatic, using the viewfinder. Make sure you also set the focal length (lens to shutter distance). You might also have a mf / af switch on the lens. This also only works through the viewfinder.

Jan 16, 2010 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

2 Answers

Iam finding my sigma 10-20mm lens is not focusing on automatic,can you advise,it is switched to auto,on a canon 400D,with polarising filter fitted!


Hi Dose the lens work in manual focus if so it may need a new motor if you are in the uk I can repair it for you for £45.00

Nov 03, 2009 | Sigma 10-20mm f/4-5.6 EX DC HSM for Canon...

1 Answer

Sigma 50-500mm auto focus problem


Hi is the manual focus working from inf to close focus and not stoping then it needs a new hsm motor

Jun 07, 2009 | Sigma APO 50-500mm F4-6.3 EX DG/HSM Lens

2 Answers

My sigma 28-200 have problem with shutter problem my canon eos 450 cannot set more than f3.5 bcoz there are error01


All auto-focus lens have some sort of 'chip' inside .. Sigma 'reversed engineered' Canon's chip - however every time Canon brings out a new camera there is a chance the Sigma lens chip won't work (this is why you see lots of Sigma lens on eBay :-) )

IF you can prove you purchased your lens direct from an authorised Sigma dealer, Sigma will update the chip for free .. otherwise they charge about £35 .. you pay postage in both cases ..

Visit the Sigma web site for further info.

Dec 01, 2008 | Sigma AF 28-200 Lens

2 Answers

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

Broken?


If if won't focus manually then there is a problem with the helicoid and you'll need it professionally repaired. Don't force it.

Nov 04, 2007 | Sigma 30mm f/1.4 EX DC HSM for Sigma

2 Answers

Camera lens


It sounds like a CPU chip incompatability issue. Sigma has that problem sometimes but are usually very good about rechipping at no cost (at least for Nikon-mount lenses). What did they say when you asked them?

Oct 16, 2007 | Canon 16x Manual Servo for XL1S

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