Would a helios 2/58 fit on my nikon d50 dslr?

Would a helios 2/58 fit on my nikon d50 dslr?
>>> Would a helios 2/58 fit on my nikon d50 dslr?

Can I use another software for the camera?

I have a D3100, which have a little shitty software in it, and I was impressed by the D5100's one, so is there any way I could download the D5100 software from nikon's official site and install it in my D3100?
>>> Can I use another software for the camera?

Would this lens work with my Nikon?

I own a nikon d3100 and am considering buying a new lens for an upcoming safari.So far I only have a 18-55mm.
I found this lens on ebay and don't understand why it is so cheap and why i would spend so much more money on another lens if this is 70-300mm.
am i missing something?
http://www.ebay.co.uk/itm/130830387921
>>> Would this lens work with my Nikon?

Planing to get nikon d50 any suggestions?

I'm planing on getting nikon d50 it's just the body would the camera work with just a 35x HD opteka fisheye lens would it shoot?
>>> Planing to get nikon d50 any suggestions?

What is the difference between Nikon primes 50mm f/1.8G and 50mm f/1.8D?

What does G and D stands for ?
>>> What is the difference between Nikon primes 50mm f/1.8G and 50mm f/1.8D?

Nikon vesus Canon. Pros and cons?

Those who have used Both Nikon and Canon, please share your preference, pros and cons and why one is better than the other?
>>> Nikon vesus Canon. Pros and cons?

How to focus with Nikon D5100?

A lot of tutorials I'm reading talk about focusing.Am I missing something? Doesn't it auto focus? The lens just zooms in & out.
Bear with me here. Just trying to learn.
Added (1). How do you turn the autofocus off?
>>> How to focus with Nikon D5100?

How to get a blurred background photo with Nikon D5100?

Still in the midst of learning here but just curious how do you get a photo with a blurred background? Also, in order to do so, does the subject need to be still?
I have the kit lens.
thanks
>>> How to get a blurred background photo with Nikon D5100?

Why does my video stop all of a sudden on my d7000?

Sometimes when I'm recording Full HD video with my Nikon D7000 it only records for about 30 seconds and then just says 'video recording has stopped unexpectedly'. Something like that anyway.
Does anyone know why? I'm using a Panasonic SDHC 8GB class 10 card with read 90, write 25mb/s.
It doesn't do it all the time. For instance I just recorded a 2 min. Clip.No issues.
Does anyone know why it would be doing this? Or has it happened to you?
Thanks

Oh and Jim A, before you say "Read your manual" I have read it.
Added (1). I do have a SanDisk Extreme class 10 45mb/s card as well and its a 16GB. Picked that baby up for about $35 on sale at best buy. I have that in my #1 slot for pictures and the panny card in #2 slot for video. Maybe I should switch them. Thanks guys.
>>> Why does my video stop all of a sudden on my d7000?

Most popular guide book for nikon d 3200?

Most popular guide book for nikon d 3200?
>>> Most popular guide book for nikon d 3200?