
Is there a Nikon equivalent lens to this Canon lens?
This is a Canon lens: Sigma 70-300 F4-5, 6 DG APO Macro
Is there a lens that is that is equivalent or really close to it for a Nikon D3000 camera?

Really bad fringing with nikon d5000?
I have been having a real problem with my nikon d5000 recently… Fringing. This is using the 18-55mm kit lens. I'm shooting RAW format so i suppose there's no in camera correction. The really horrible thing is that all the fringing is always cyan, red, green, or a nasty combination of all of them which photoshop elements 9 does NOT detect using the 'defringe' layer option. I have tried manually desaturating these colours but usually end up with a horrible big grey line where the fringing was.anybody know how i can easily correct the fringing using elements 9? Or is there an option i have turned off on my camera.
please help!
Added (1). Yeah, i know you can do it in lightroom 3, but i don't have it… Please tell me a way to do it in elements?

Nikon D3100 video and viewfinder?
Is it possible to look through the viewfinder while recording video or must you always look on the LCD?

Is this Nikon Macro lens good?
Is this Nikon Nikkor, 35 mm F/1.8 (G AF-S DX) good?
Details:
35mm wide aperture lens with high-quality optics and compact dimensions designed for use with Nikon DX format cameras. It features a large maximum aperture of f/1.8 that offers a bright viewfinder image and is ideal for low light shooting situations
I want a good macro lens for my Nikon D3100.

Can I get an adapter for a 1:45-5.8 MC Macro lens to fit a Nikon D40?
Can I get an adapter for a 1:45-5.8 MC Macro lens to fit a Nikon D40?
Added (1). Sorry I'm new to dslr cameras, it is a cosina 70-300 MM

I KNOW I POST THIS TWO TIMES NOW BUT I MEANT D3000 INSTEAD OF D7000 so i'm just getting into photography and i need something easy to handle and use so is this camera a right one to start out with?

Which camera will work best for my needs?
I have 3 cameras in mind - the Nikon D5000, the Canon T3, and the Canon T1i.
For the most part, I usually take photos of scenery/wildlife from afar.
Added (1). With the T1i, I'd be getting an 18-55 lens
The T3 an 18-55 also and a 75-300,
and with the D5000 a 15-55 and 55-200.

How to transfer pictures in my camera to my computer?
This probably sound stupid but i have a mac book pro and i just inserted the memory card from my nikon D90 into the card slot and when i open the memory card i can't see the pictures i've taken. How do I transfer my pictures?

Recommendation for good Nikon lenses for DSLR Cameras?
I have recently bought a Nikon D7000 with a 18-105 lens. I require a better zoom lens. Can anyone recommend a Nikon lens with a better zoom, preferable one that is not too expensive?

Does the Nikon D5100 have a 'Bulb' mode?
I've been tryng to find if the d5100 has a 'Bulb' mode. And if it does, how do you activate it?