Hello, I just brought my sigma macro 105mm lens and Im having trouble getting it to work probably on my nikon d90, they only way I can get it to work is turn the aperture on the lens to f32 I cant change it to any other aperture, and on the camera it pops uo F33 error and I cant take a photo it dosnt matter what setting im in manual auto shutter piroity etc please help, I didnt recieve a manual with my lens Im quite stuck, and when I have the lens turned to f32 and working i cant seem to zoom in very far, is it possible that something is wrong with my lens and should I take it back to the shop I brought it from, thanks for your help From Haley

The user manuals coming with lenses most of the time have little information about how to use them. The lens will have a MF and AF and perhaps a VR switch. If you want to learn more about macro photography, check this site from Ken Rockwell, where he is explaining how to do so with a Nikon camera.
Be aware the macro lenses are designed to focus close to the camera and will have the sharpest pictures close to the camera. I would not say you can't use a micro as a tele, but the results with a normal 105 could be better.
Still I think you have a great lens with your Sigma.
How to Shoot Macro

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

This is not a solution but the same kind of problem.

I just bought a Nikon D5100 and found that my Sigma 105mm macro has a problem. The camera will not power up, but if I turn it on, untwist the lens and then twist it back in, the camera powers up. If I leave it for a few seconds, it powers down again. Provided I keep taking photos, it works, but this is not acceptable because it can take several seconds to get a focus on a close-up, and by time I get the focus, the camera powers down again.

I never had any problems with this lens on my Nikon D80. I also use several lenses, all of which work well with both cameras. It's only the Sigma that has the problem. And I did clean the contacts with a proper contact cleaning solution and a swab, but still no joy. My lenses are made by Tamron, Pro Optic, Nikon and Sigma, and the only problem lens is the Sigma.

In all modes the aperture ring on the lens should be locked at the smallest aperture. In the M and A modes you control the aperture by turning the command dial on the front of the camera. In P and S modes you control the aperture indirectly by turning the command dial on the back of the camera.

It could be condensation inside the lens. It could be a problem with the focusing. It could be other mechanical/optical problems with the Sigma lens. If the problem persists after the lens has thoroughly dried out, take it in to a reputable camera shop and have it checked out by a qualified technician.

Hi there,

Well you can please follow the link below to get your manual -

http://www.dphotojournal.com/sigma-105mm-f28-ex-dg-macro-reviews-sample-photos/

(click on the manual tab and then click on - Download Sigma 105mm f/2.8 EX DG Macro User Manual (PDF – 67kb), thats it)

Good Luck!!

Thanks for using FixYa!!

Do you have the aperture ring set to "A"?

Hello,
The Nikon D90 works well with the Nikon AF 50mm lenses and most other brand Nikon fit AF lenses. If they are not AF you will lose autofocus and metering.
Do you know that on the D90 the lens becomes a 75mm but the aperture stays the same, so for instance the 50mm f/1.8 is a 75mm f/1.8.

Hi I had a similar problem with a 50mm prime and I fixed it by locking the aperture ring on the lens in place.

There is no digital zoom in DSLR