Please help, desperate! My Nikon D5100 was stolen last night. I have the original box and some warranty papers for the two lenses, but I'm not sure if the numbers I see are the serial number or not. Need for police report.

Open your appuatue set your ISO to 200 or 1600 what ever it needs

Quantaray makes lenses with a variety of lens mounts. If the lens has a Nikon mount then it will work with the D5100. If it has some other mount then it will not.

Sirius makes lenses with a variety of lens mounts. If the lens has a Nikon mount then it will fit on your D5100. However it will not autofocus, nor will the camera be able to set the exposure. In fact the exposure meter won't work at all, and you'll have to shoot in the Manual mode (turn the mode dial to M).

No Nikon lens ever zooms automatically, so I assume you mean focus.
The D5100 lacks an autofocus motor, requiring the lens to have one. The older 70-300mm lenses lack this motor, expecting the camera body to have one.
The D5100 will only autofocus with lenses designated AF-S or AF-I. It will not autofocus with older AF-D and AF-G lenses.

No. This lens lacks an autofocus motor, relying on the camera to have one. The D5100 lacks an autofocus motor, relying on the lens to have one. Adding a battery grip does not change this situation.

The D5100 only autofocuses with lenses having an internal autofocus motor. Nikon designates such lenses AF-S, Sigma calls it HSM. Lenses without the motor will only autofocus with the larger and heavier Nikon cameras such as the D7000.

Hi I'm having the same problem!!!
My Nikon D5100 camera giving a sin of Autoexposure error after it's drooped from my tripod on the deck floor (Wooden Floor). How can I fix that? I tried few does not work, please help me, it's an emergency. Thanks!

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.

Quantaray makes lenses with a variety of mounts for a variety of cameras. A lens with a Sony mount, for example, will not fit onto a Nikon camera. Assuming the lens has a Nikon mount, it will fit on the D5100. However, the D5100 requires the lens to have an autofocus motor. If the lens does not have such a motor then it will not autofocus. It will still work fine as a manual focus lens.

Sorry, FixYa does not sell lenses, or any other equipment. Depending on where you are, you may be able to find used lenses at flea markets, pawn shops, and/or on Craigslist. Your local camera stores may have used lenses as well. You can also find used lenses on eBay.

My new D5100 also started doing the same thing to me the other day. I tried three different lenses, two batteries, and three memory cards. Everything still black. I had to send it back to Nikon for it to be looked at under warranty, but am not expecting much help based on all the horrible things I've been reading now about Nikon's terrible customer service. (The people on the phone at customer service have been completely unhelpful and couldn't care less so far.)

This is my first Nikon and to have it quit working brand new after 8 weeks is unacceptable. Plus I don't think I should have to pay to ship back a defective product under warranty. They should cover shipping as well free of charge. Now I see why everyone in my class owns a Canon. I hear their customer service is great. Wish I'd known sooner.