
Explain to me about camera lenses?
Okay. I have used cameras before, but I don't understand about the lenses like Nikkor 18 - 55 mm and Tamron 10 - 24 mm. What does that mean and what are they used for? Also, how do you take a lense off and put another one on? I'm so confused, please don't be rude I just need someone to explain to me what the lenses are used for etc. Thanks!
Added (1). I understand more about what the lenses mean, I'm currently looking to buy the Canon Rebel T1i and I'm going to be using it for making videos more than taking photos. I think I would like a lens that can get all 3 snaps, which one would you recommend for a canon?

Buying Used Camera Lens, I Need Advice Please
I found a Nikkor VR 55-200 camera lens, on Craigslist for $130, and I'm going to look at it tomorrow from the guy selling it. What should I look for when I look at it to make sure that it's in good condition? Other than the obvious of; no scratches and dings on the lens.
Note; I'm bringing my camera so that I can try it out.

Okay so i want to buy a lens, but I'm in a bit of a predicament. I can only buy one but which? Help me decide! If you've got either give me your opinions! Would be greatly appreciated.
Nikon Af-S 17-35/2.8D OR Nikon AF-S NIKKOR 70-200mm f/2.8G ED VR II

What equipment do I need to shoot a short film like this?
I want to shoot a very low budget short film with a jason bourne sort of story. I plan on getting the panasonic gh2 since its the best value for money. Besides that what other types of equipment do I need to shoot a film in the bourne style. What mic, tripod do you suggest? I have a carbon tripod but the head sux balls so maybe just a good head for shooting films. Also any other equipment I might need? Shoulder mount? I have a nikon adapter so I thought I could use a 35mm nikkor but due to adapter it would become more of a 50mm so any suggestions for the best lens to shoot films in this camera? Mind you this is very low budget film and actors are not paid so yeah… Thanks!

Nikkor af-s vr 70-300mm f/4.5-5.6g if-ed?
I have a brand new Nikkor lens how much are these selling for right now?

Where do I get a new lens cap?
For a Nikkor 18-55mm?

Macro reverse ring for nikkor 18-55?
Wich one should i buy?

Would a hb 31 lens hood fit a 55-200 lens?
I want a bigger lens hood for my Nikkor lens 55-200. I see that the HB 31 hood is alot bigger. Would it fit my 55-200 lens?

Which lens is better - Nikon 18-55mm DX AF-S, or 50mm f/1.8 D AF?
Right now I own a Tamron 18-270mm f/3.5-6.3
I used to have a Nikon 18-55mm DX AF-S but sold it…

Which lens for outdoor water sports photography from a distance?
Http://www.amazon.com/Sigma-70-300mm-Nikon-Digital-Cameras/dp/B0012X43P2/
http://www.amazon.com/...0012UUP02/
http://www.amazon.com/...000O161X0/
Added (1). Mostly in daylight so lighting is not a problem. I can't extend my budget so which of these three would be the best for sports photography from maybe 100-150 meters away?