Question about Canon EF-S 17-85MM F/4-5.6 IS USM Lens

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My 17-85 is no longer capable of focusing to infinity. It focuses short and medium distances with no problem, but I have to use manual focus to take long distance shots. Does the lens need to be replaced or can it be fixed ?

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You have to buy a new flex cable, this is the problem and its very common in a batch of these sold between 2007 and 8, buy that or send it to canon, they will charge well over 120 USD

Posted on Mar 01, 2012

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Depends on whether it is still in warranty. If so, check with Canon for warranty repair. If not, I'd guess it will not be cost effective to repair it, but a local (maybe one in your area?) Canon authorized shop could give you a better idea about whether to repair or replace.

Posted on Oct 16, 2010

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1 Answer

Why when you turn the camera appears focus error


Although the manual does not have indicate a focus error, I assume you notice the camera can't focus correct.
I hope you know the camera has a focus selector, see the picture. (in the manual, page 10. For auto focus you should select C-AF (continues) or S-AF (single). If it is in manual, toy should focus yourself using the focus ring on the lens (closest to the camera)
Then to help the focus system, there is a external AF sensor. If it is dirty, then it is difficult for the camera to focus correct in a short time.
Also be aware the camera likes to have extra contrast on the focus distance and no objects in front of the subject you want to pictures, with lots of contrast.

Sometimes point to a object with a sharp contrast, on the same distance, press the shutter release button half, then reframe your picture and only then press the button complete.
when you want to shoot fast moving objects choose C-AF.

I hope this helps.
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Jul 13, 2014 | Fuji Finepix S9600 Digital Camera

1 Answer

When i zoom in to a close range the view is blurred


try to focus on a longer distance. probably you try to focus in a very short distance, and it's below the lens ability.

Nov 02, 2009 | Nikon D40 Digital Camera with G-II 18-55mm...

1 Answer

Lens for Nikon D60


I will try to help you, but please understand that my experience is with Nikon film cameras. Assuming that the D60 works in a manner similar to a Nikon 35 mm body and that Sigma macro lens work like Nikon macro lens, you should be able to determine the usable subject to lens distance by experimentation. First, make sure the lens is in the macro mode. To do this you must set the auto-focus mode control to the manual focus mode (see your manual). On Nikon lenses, you must first set the focus ring to infinity, then move slider switch, which has two positions marked; "normal" and "macro., to the macro position. You should now be able to rotate the focus ring to the macro range. Use the zoom ring to zoom in and out and focus with the focus ring. The the range over which the lens to subject to lens distance will yield an in focus image will be rather limited and in the range of an inch or so to 6 or 8 inches.

Dec 09, 2008 | Cameras

1 Answer

Autu focus


Best thing you can do is focus manually, using the little green dot in the bottom left hand corner of the viewfinder for assistance.
The 'lag' is due to the camera deciding the focus point, passing it to the motor in the lens, by which time the subject hs moved and so it tries to fix again by moving through the range.

Its annoying, but focusing manually, although not a solution per se, is the only option.
Sorry mate.

Sep 13, 2008 | Fuji FinePix S2 Pro Digital Camera

1 Answer

Film speed override?


Press and hold the ISO button on the top left and rotate the command dial on the right until the film speed appears on the display. Release the ISO button and the speed is set.

In case your instructor hasn't told you, IR light is just below visible light on the spectrum and has a longer wavelength. Therefore, IR light will focus behind the film plane for a given setting. I.e., if you preset the lens to focus at 10 feet, the IR light will focus at a shorter distance. Unless your lens has a distance mark for IR, I would limit my shooting to longer distances and smaller f-stops to use the depth-of -field to compensate. When you are in focus for IR, the image in your viewfinder will be out of focus. The closer you are to the subject, the more out of focus the image will appear at the correct focus setting.

Sep 07, 2008 | Nikon N6006 35mm SLR Camera

1 Answer

Focusing problems


You may be beyond (up to close) the focal capability of the lens. Even though there is a macro setting, the lens may not have the capability to focus on an object that close (without adding an external macro lens). The specification on the minimal distance for focus should be listed in the owner's manual.

Mar 04, 2008 | Olympus SP-350 Digital Camera

1 Answer

Manual Focus Problem


Yup, the Oly C5050 MF leaves a lot to be desired... What I did was to use the AF to get a focus lock then while still holding the shutter half way I would change focusing mode to MF - it will keep the distance value of the AF... Hope this helps...

Sep 13, 2005 | Olympus Camedia C-5050 Zoom Digital Camera

1 Answer

DSC-T7 Magnify Mode


Hello, Don't mix magnifier mode and expanded focus mode. Magnifier mode is simply a short AF range operating mode, like a kinda super-macro. Whether you selected mag/macro/normal, the camera operates always same except that the focussing range limits are changed accordingly by the S/W. The lens itself is capable of focussing from 1cm to infinity anyway. Expanded focus is used on some still and video cameras to assit manual focus because the LCD's resolution is lower than the CCD's. It can be seen as a workaround for the lack of optical reflex viewfinder (Sony cams ar not dSLRs, including HDR-FX1!). So the center area of the pic is "digitally zoomed" to make sure you can adjust a sharp focus of the point of interest in your frame. However it has nothing to do with macro shooting, and works at any distance within the lenses focussing range. Hope having helped

Sep 12, 2005 | Sony DSC-T7 Digital Camera

1 Answer

Focus Problem


A small amount of dirt on the lens would just produce some flare and redule overall contrast slightly. It wouldn't produce a grossly out of focus image. Either you misaligned something or you messed up the autofocus system somehow. Can you focus the lens manually. Many consumer grade digital cameras allow you to set the focus at some specific distance. Do that measuring the distance carefully, and see if the image is still out of focus. Digital cameras tend to have a lot of depth of field, so there must be something seriously wrong with the mechanism.

Sep 12, 2005 | Fuji FinePix 2650 Digital Camera

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