Questions & Answers for: Sigma focus

Question about AF 70-300mm f/4.0-5.6 DL Macro Super Lens for Canon-EOS

Trouble focusing with sigma 70-300 DL macro super lens

trouble focusing with sigma 70-300 DL macro super lens Hi I am using a sigma 70-300 DL macro super lens on my canon Eos 300 D digital camera and am not able to either get the auto or manual focus to ...

Question about 24-70mm F3.5-5.6 AF Zoom Lens

1 Answer

Sigma 28-300 3.5-6.3 won't focus

Sigma 28-300 3.5-6.3 won't focus My Sigma 28-300mm lens won't focus and take a picture on auto-focus. It just continues to try to focus in and out but never allows me to take the picture. I am using ...

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

1 Answer

Sigma auto focus 1:3.5-4.5

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 ...

Question about AF 70-300mm f/4.0-5.6 DL Macro Super Lens for Canon-EOS

1 Answer

Sigma 70-300 mm lens wont focus

sigma 70-300 mm lens wont focus Help, I've my sigma 70-300 mm telephoto lens wont focus in manuel or auto. I put it on my canon rebel xti. Sometimes it will focus but the pics look blurry. Thanks I ...

Question about 30mm f/1.4 EX DC HSM for Sigma

1 Answer

Front/Back Focus Problem at Sigma 30mm F1.4 Lens

Front/Back Focus Problem at Sigma 30mm F1.4 Lens I just bought my Sigma Lens 30mm f1.4, i just realised that it has minor focusing problem. With apperture open wide (that's f1.4) and my subject ...

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

1 Answer

Auto focus not working

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 ...

Question about APO 50-500mm F4-6.3 EX DG/HSM Lens

1 Answer

Sigma 50-500mm auto focus problem

sigma 50-500mm auto focus problem I have a sigma 50-500mm.The auto focus stopped working.Can any one help?please. Hi is the manual focus working from inf to close focus and not stoping then it needs a

Question about 150mm f/2.8 EX APO Macro DG HSM for Nikon AF

1 Answer

How do you use the manual focus feature

How do you use the manual focus feature. My friend just bought a new one and is having trouble with this part of the lens. I have one for my canon and there is a setting for it Set either the camera ...

Question about 70-300mm f/4-5.6 DG APO Macro Lens

2 Answers

My lens is not getting

My lens is not getting the image sharp and the motor of the lens is making a strange noise. The autofocus motors in Sigma lenses that are not HSM tend to be noisy, but I presume yours is now more ...

Question about 70-300mm f/4-5.6 DG APO Macro Lens

1 Answer

IN AUTO FOCUS FOCUS RING STICKS MAKES NOISE LIKE

IN AUTO FOCUS FOCUS RING STICKS MAKES NOISE LIKE IN AUTO FOCUS FOCUS RING STICKS MAKES NOISE LIKE GEARS SLIPING. LENS FAILS TO FOCUS. MANUAL FOCUS OK. How new is the lens? In or out of warranty? If ...