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Nikon D 40 Black spotting in same position on images... if I use manual P S A M gets worse, zoom not good either ( I use a Sigma) changing lens doesn't help... so not a lens problem

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You have a dirty image sensor, a very common problem on all digital SLR cameras.

Please click on this link for an in-depth guide courtesy of Fargo Enterprises, Inc. They obviously want to sell you cleaning kits, but there are other suppliers. There are also plenty of YouTube videos showing you how to do the job using different methods.

Good luck and please take a moment to rate my answer.

Posted on Sep 29, 2010

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Sounds like dust on the sensor. Google the words "cleaning a DSLR sensor" and you will find sites explaining the cleaning procedure with pictures and places to get the supplies needed.

Posted on Sep 29, 2010

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1 Answer

How do I clean Lense on a Nikon Coolpix S6100 7X Zoom 16MP


you can not clean at your self. Use dry cotton or ear buds for cleaning the lens front side. After that if its still there then use compressed ai in surrounding the lens. After that if the spot still there then you need to visit service center for cleaning the lens internal side.

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1 Answer

Sigma 170-500mm f.5-5.6. fit on nikon d 200 ??? and i wild like to how good is this one 170-500mm


Sigma makes their lenses with a variety of mounts for a variety of cameras. A lens with a Canon mount, for example, will not fit onto a Nikon camera. Assuming the lens has a Nikon mount, it is fully compatible with the D200.

If you mean the 150-500mm, you can see a review at
http://www.popphoto.com/gear/2008/12/sigma-150-500mm-f5-63-dg-os-hsm-apo-af

In general, Sigma supertelephoto zooms have a pretty good reputation. However, only YOU can decide whether a particular lens is "good enough" for you.

Aug 04, 2011 | Sigma Zoom Telephoto 170-500mm f/5-6.3 APO...

1 Answer

How about a Sigma DL ZOOM auto focus 75-300mm 1:4-5.6 lens onto a Nikon D-40?


That particular lens should work on the D40 if it is made for the Nikon mount.
If not, you'd need an adapter to fit it to the Nikon mount. (i.e. if it is a Canon-type lens, you'd need a Canon-to-Nikon lens mount adapter).
You'd probably have fair luck selling it on eBay and buying the right kind of lens for your Nikon.

Mar 06, 2011 | Sigma SD14 Digital Camera

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I have the sigma 70-300mmD i just bought for my nikon D40 and i am having trouble with the auto focus. it will not autofocus can anyone tell me what i am doing wrong and or where i can download the...


The Nikon D40 does not have an autofocus motor, relying on the lens having one. This Sigma lens does not have such a motor, relying on the camera having one. Nikon designates lenses with an autofocus motor AF-S, Sigma calls theirs HSM.

Dec 17, 2010 | Sigma f/NIKON- 28-90/3.5-5.6 Aspherical...

1 Answer

I now use this lens on Nikon N5005 and want to purchase the D5000 camera. Is this lens compatible?


Yes and no. The lens will fit on the D5000 without a problem. But the sensor on the D5000 is smaller than a frame of 35mm film so you'll end up using only the center portion of the image. What this amounts to is that the lens will act like a 115-450 zoom would on the N5005. Also, if the lens doesn't have a focus motor built in (Sigma calls it HSM) then it won't autofocus on the D5000. You can still focus manually, though.

Sep 30, 2010 | Sigma 75-300mm f/4-5.6 DL Lens for Nikon...

1 Answer

Sigma-300mm zoom


Called Sigma service. 1 (631)585-1144

Apr 12, 2009 | Sigma 75-300mm f/4-5.6 DL Lens for Nikon...

1 Answer

Sigma 170-500 f5.6 not focuing at 500mm


I sent my 135-400 to these guys about 18 months ago- speedy service, and quite good rates :)

http://www.sigma-imaging-uk.com/

Mar 09, 2009 | Sigma Zoom Telephoto 170-500mm f/5-6.3 APO...

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

Dust inside my sigma lens


Zoom lenses are kind of like a tire pump. They will draw air in (and out) when zoomed. The longer the throw of the zoom, the more air moved. You can try Sigma, they may cover it, but...

A small amount of dust should have no effect on the quality of your images, but I would be concerned about it being transferred to your camera's image sensor over time. ( I assume you are using the lens on a digital body )

Oct 02, 2008 | Sigma 18-200mm f/3.5-6.3 for Nikon

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