What are cheap professional camera types?

I need a professional camera that looks nice kind of like a Nikon D5 100. I am looking to spend like 0 - 350 $. I will buy one off ebay or something. I am trying to take nice video and pictures. Please Help me. What are some nice cameras in my price range ?

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Canon T3, Nikon J1, or Nikon D3100?

I need a camera for a school photography class. Which camera would be better? I also use it for when I travel.

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Yongnuo flash on Nikon D3100?

I ourchased a Yongnuo YN560III flash for my Nikon D3100 but I cant get it to fire when I take a picture! I have placed the flash unit on the hot shoe. What am I missing? The camera menu doesnt mention use of an external flash.

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'Magic Lantern' type for Nikon?

Hey Guys,
I have a Nikon D5100, and I was wondering whether there is any third party firmware like 'magic lantern' for nikon?
Thank You

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Speedlight radio trigger problems.?

I bought 3 Cactus V5s recently to go along with my Nikon SB-600 and SB-700.

I'm shooting a wedding soon, and here's my setup plan for the reception- I'm going to have my SB-600 on a light stand with a V5 on one of the corners of the dance floor… then I'm going to have a V5 on my Nikon d300s and my SB-700 on top of that with a lightsphere.

Here's the problems I'm experiencing:

1: Sometimes both of the speedlights won't fire..If I press the button on the V5 they both will fire, but not when pressing the shutter release button.if I remove the V5 from my camera and reattach it usually that's an immediate fix.

2: Also, sometimes my SB-600 will fire, when pressing either the shutter release, or the V5 button, but my SB-700 won't.It seems like turning both speedlights off, and turning them back on starting with the SB-700 fixes that.

These are really annoying issues. The reason I bought radio triggers was so that I didn't have to deal with flashes not firing. Does anybody know the cause of this and how it can be prevented?

Thanks a lot!: )

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When do I need to get a business license for photography?

I'm 17 and have been taking photos for a couple of years now. I have had my work in art shows, and am taking senior pictures this upcoming month, so I am not a total newbie at this. I have invested in a nice D3000 Nikon, two tripods, and two lenses. I've been holding off on selling my nature and portrait photography, because I cannot seem to figure out when I need to register as a business.Do I do it when I am 18, is there a certain amount of money I can take without needing to register? Any help is appreciated. Thanks so much!

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