Will a Sigma 10-20mm f4-5.6 lens fit on my Nikon D3100?

Will a Sigma 10-20mm f4-5.6 lens fit on my Nikon D3100?

How to make the words go away on my camera?

I have a nikon D3200 and when I view the photos the words at the bottom of the photo I don't want that there's there any way i can remove that?

Can I use FX lens in a DX Camera?

I have a Nikon D3200. My question is, if I can use a FX lens in a DX camera. The D3200 is a DX camera.

I'm considering to upgrade From my DSLR camera?

I have a Nikon D3100 and was considering to buy a new camera in exchange but i do not have sufficient money to purchase a higher level DSLR so i was thinking to go with D3200 or D5100, What do you suggest?
i mean the D3100 does lack Kelvin White balance and i rotating LCD. I was looking for a camera that has the DOF option and the Off camera flash option.

How to get better lighting for better quality pictures?

Ok me and my friends started and run a car meet. We have been taking picture of the cars coming out with a d3000 and a cannon and other Nikon dslr that I forget which model.
However, we meet in a parking lot at night where the lighting is absolutely awful. We're wanting to set up a station to set up with some lighting and tripod and all that to get great pictures but no clue what equipment I need to get as I'm not that experienced with photography right now. Prefer to spend as less as possible but need stuff that will last.

Computer says no new pictures found on this device when there are pictures on there?

I recently bought a new CF card for my nikon d70 and i took some pictures and when i put it in the computer it said, no new pictures or videos found on this device even though there are pictures on there

Can't choose a DSLR?

I finally decided to buy a DSLR, i did some searching around on the net and decided to buy the Nikon D3300, but a few commenters say that the Nikon D5100 has better image quality. Others even say that i should get the Pentax K-500, because that's the best beginner DSLR. Could any of you help me pick one of these three, or maybe suggest something in the same price range, because i'm kinda on a tight budget.

Newer Nikon Camera with significant quality difference over the Nikon D40x?

I bought a Nikon D40x six years ago and later added a Nikon 18 - 200 mm lens. I like the camera and the photos it takes. People often compliment my photographs. But on a cruise recently, I was amazed at the quality of the portrait photos the ship's photographers took with their Nikon cameras. I asked the guy how he got such great photos and he said "start by buying a $3,500 camera".

My question is what model or price of Nikon camera would I need to move up to in order to see a difference in my photos? I know equipment isn't everything but a much larger sensor has to make a difference so where is that sensor size level ( and thus price level) where a newer Nikon model would show a better quality photo?

Same SD card for DSLR and nibile phone?

I just purchased a Nikon D7000 and a 32GB card for shooting RAW images. However, I want to insert a micro SD card with adapter into the second slot for storing JPEG images so that I can immediately remove it and use it in my mobile phone to share the pictures on Fb, instagram etc. Will this work?

What wireless transmitter/receiver do I get?

I have the Nikon d3200, and I just bought the Olympus lapel mics. I bought a transmitter/receiver but it didn't fit into my camera. It's a 3.5mm stereo jack.

Which should I buy? I need this to do artist interviews.

Also- how do I set up more than one microphone with these transmitters?