Question about Sigma 28-300mm f/3.5-6.3 DG Macro for Canon AF

1 Answer

Auto focus not working

Hi, I have a sigma 28-300mm for canon af, manual focus at all focal lengths works fine but not auto focus. when in auto focus mode and looking through the viewfinder i hear a whirring mechanical noise like it's trying to focus but just can't. is there anything i can do? thanks

Posted by on

  • Anonymous Apr 07, 2009

    I have the same problem except my camera body is a sony 700 and the focus doesn't seem to work even on the manual, however, the zoom seems to unfreeze when it's not attached to the camera body. I've tried this lense on 2 different sony's and it just started happening. Could the motor drive be burned out? Is it stuck on Lens lock?

    kp

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 36 Answers

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, 
/Chris

Posted on Jan 19, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why does my lens only zoom to 200


Could be, because most camera's only can auto focus till f/1:5.6. And if 5.6 is reached at the focal length of 200 mm, the camera stops it from going to a part it can't be focused.
Perhaps you try the lens in manual focus, and manual zoom.

Jan 28, 2014 | Sigma Zoom Telephoto 170-500mm f/5-6.3 APO...

1 Answer

Hi- purchased the Extender EF 2X II; it seems fine with my fixed focus 300mm, but the auto-focus doesn't operate with my 70-200mm EF IS USM zoom, in any mode. Any suggestions? Thanks G


You haven't stated which body you have but the AF will not work with the extender if the effective lens aperture is too low (remember that a 2x extender doubles the focal length but halves the effective aperture).

Canon's own website states: "Autofocusing does not operate if the effective maximum aperture is greater than f/5.6 (greater than f/8 on the EOS 1V and EOS 3)."

Aug 01, 2010 | Canon Extender EF 2x II Lens Converter

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...

1 Answer

My Sigma 24-70 2.8 macro auto focus keeps jamming


Is the manual focus working ok if so the AF motor is faulty may need new gears or new motor

Dec 16, 2009 | Sigma 18-125/3.5-5.6 DC Aspherical IF Zoom...

1 Answer

Auto focus at full zoom not responding Nikon D80 with 18-200mm VR


Hi - I own this lens and it manually focuses at all focal lengths (hard to see at 18mm unless your subject is extremly close). You may need to get the lens checked. BTW - Mine was set as follows when I checked for you:
  • D80 was "on"
  • M/A
  • VR = Off
  • Normal (not Active)
Hope this helps!

Apr 09, 2009 | Nikon 18-200mm f/3.5-5.6 G ED-IF AF-S VR...

1 Answer

28-80 mm sigma won't auto focus


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

Nov 27, 2008 | Canon Sigma 28-80mm f/3.5-5.6 II AF Lens...

1 Answer

Sigma auto focus 1:3.5-4.5


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

Aug 21, 2008 | Sigma Zoom Tele 135-400mm f/4.5-5.6 APO...

1 Answer

Sigma 28-300 3.5-6.3 won't focus


Did it ever work on this camera?
I have seen some Sigma lenses that are auto focus on canon film cameras but then when put on the digital they dont work right. If you have used it on this camera then make sure the lens is clean.sometimes dirt on the front wil make it try focusing on the dirt. Next try focusing in manual focus to make sure the focus is working. Then take the lens off and then put it back on and make sure it clicks into place.

Let me know if none of those things work. also make sure to try focus on something close and somthing far away.

let me know how it works,
Caleb

Jun 26, 2008 | Sigma 24-70mm F3.5-5.6 AF Zoom 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...

2 Answers

AF problem with Quantaray 2X adapter


How does it stop working? Do you mean it doesn't auto focus anymore?
Many longer focal length lenses wont auto focus with 2x teleconverters on them.

Nov 27, 2007 | Quantaray 100-300mm F4.5-6.7 Zoom lens for...

Not finding what you are looking for?
Sigma 28-300mm f/3.5-6.3 DG Macro for Canon AF Logo

Related Topics:

646 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sigma Camera Lenses Experts

kakima

Level 3 Expert

96674 Answers

Steve

Level 3 Expert

3287 Answers

Q4SteveB

Level 2 Expert

159 Answers

Are you a Sigma Camera Lens Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...