
I'm looking at fisheye lens for a Nikon D5100. I found a Rokinon 8mm Fisheye Lens?
I'm not sure if Rokinon is a good brand. I want a fisheye lens that does the full 180 degrees. I'm not sure if all fisheye lens do the full 180 degrees, I'm also not sure if 8mm is good. I'm not sure how the numbers work, I do not know if the higher the number the better or the lower the umber the better.

Whenever I try to take a picture, it won't focus and it makes this weird screeching sound. I've tried it in all different modes, and none of them will let me take the picture.
What do I do!

Is this a gramatically correct statement? - 1
"I'm not in possession of the lens you mentioned, but it looks like it is compatible with the Nikon D3100 camera."

Best settings for Nikon d7000?
I was wondering, if i adjust iso sensitivity to maximum sensitivity 6400 and minimum shutter speed to 1/640 do i loose image quality?

About thirty minute ago I looked through the pictures I took today on my Nikon D80. Now, I went to go put them on my computer and saw to my horror that they are no longer there on the memory card. What happened, I don't understand how this happened since I JUST looked at them. And, weirdly, only the ones I took today deleted.

How to make money at 13 years old?
I'm 13, turning 14 in two months.
I absolutely LOVE to buy my own stuff.
I saved up for my Nikon D3100 (about 650$) and now I have absolutely no money left.
I need to find a way to make money. My mom only pays me around 10-15 dollars a week. I want to be able to make more than that. Obviously, I can't get a job. I can't do baby sitting either.
I'm stuck! I need to make more cash.
Please no mean answers!
I'm trying to be mature & responsible.

Looking for a flash for a Nikon D3100 DSLR, looking at?
SU-800 and tge SB-400, one is almost double the price but if I could get alot more range for it, I'd be willing to pay for the bang for the buck, if not that much difference I'd go with the SB-400 at 150 bucks and take the extra money and but a nice aet of filters, any suggestions?
Added (1). Yeah sorry, I meant the SB-800, The SU-800 is a UV relote that triggers two side flashes that are bought separately

Sony DSLR-A580L VS Nikon D90 which one would you chose?
I want to get a new DSLR camera. I currently have a Sony Alpha a300 but want something better that can record video. So far my experience with Sony has been excellent but a lot of people has advised me to get a Nikon. These two are my finalists and therefore I would appreciate your feedback.

Is this a shutter button on my battery grip?
I think this button is used to take vertical photos. I use this battery grip on a Nikon D5000, I've tried the button it but it doesn't work.

Is a DSLR camera any good for filming?
I really want to buy a camera, but I'm not looking for professional photography. I want one more for FULL HD videos AND good quality pictures. I started arguing with my dad (he's not really into technology and it's so hard to change his mind if he's convinced about something even if he's wrong!). He read somewhere that DSLR is the technology of the future and all that drama. BUT from what I know, a DSLR camera is good for pros and you have to change lots of lenses and other stuff. I don't want artistic photography! I just want a decent camera with good picture and video quality (limited to my budget). And I came up with the idea of buying a Nikon P500 ( Super Zoom, not DSLR) but my dad wants a Nikon D3100 ( DSLR). What is the deal with a DSLR if I'm not and do not want to get into professional photography? I want the best quality a video can have if taken by a photo camera, and the video mode on P500 is better than on the D3100. The photos come second ( obviously a DSLR is better for fancy photos but i don't give a *** on that). Can anyone make me understand what the hell is going on? What should I do?
Added (1). Oh, I want HD videos for my Youtube Channel. Should I buy the P500 or the D3100?