Manual extension tubes with Nikon D7100?

I am looking to purchase some inexpensive extension tubes off of Amazon to pair up with my 40MM Macro lens. Since the D7100 has an internal focusing motor will the camera auto focus both the rings and lens? Or will I have to do everything manually? Thanks in advance for the help.

-Carbine

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Should I trade my Nikon d3100 for D50/70?

I got my Nikon D3100 a year ago. Not really thinking, or researching, it was kind of a rash decision.
Well, I've invested into a lot of AF lens. Being that the Nikon D3100 doesn't have the focusing motor built in, it's becoming a pain in the ***. I don't want to keep spending $300 per lens. I'm a college student, don't really have the money to keep blowing on the newer, more expensive lens right now.

I was wondering, should I keep my D3100 or trade it for a D70 or D50? Will that be a bad trade in your eyes? I do photography of course and I'm currently whipping together a home based studio.

What do you guys think?

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Does anyone own a Targus Crave 15.6 inch slipcase? Is it any good?

I have recently purchased a Targus 15.6 inch / 39.6cm Crave Laptop Slipcase, and would like to know if it was worth the money? (I bought it on eBay so I haven't got it yet). So can someone tell me if the case is durable, resistant blah blah blah etc… Is the case itself good overall, comfortable to carry…

Thanks for your time!

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Do Megapixels Matter?

I want an entry-level DSLR that's not too expensive, but that produces sharp images and good quality images. I was looking at the Nikon d3300, mostly because it has 24.2 megapixels. However, the Canon cameras for the price range that I'm looking at are 18 megapixels. I have a Canon SX40 HS (12 MP), and I decided I should get something better, because I wasn't too fond of my SX40 HS. I heard that people praise the d3300 for its sharpness, but then I realized that most of what you want in your camera/your images depends on the lens. So do the megapixels in the cameras matter? Which one has better Image quality? Is the d3300 better than the Canons? If I want a Canon lens, would it be worth getting the Canon, despite a smaller amount of pixels? Or should I get the d3300 with a Nikon lens? OR, should I get a lens from neither of those companies (Tokina or sigma)? What lenses would you recommend? The lenses that I need are one for wildlife photography (so a long lens with a large focal distance like 200-300mm) and an all-around lens so something like a 18-200 or something like that. And i want good image quality. Please give feedback, any feed back would be greatly appreciated!

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About Nikon AF and AF-S lenses?

I have a Nikon D5100 and I consider buying a 50mm AF lens and perhaps a 70-300mm AF or 55-200mm AF, and I know that it won't autofocus on my camera.

My question is, is it really worth the price if I buy AF-S lenses, one that would autofocus on my camera? Or should I stick to the AF?

I admit that I get a bit pissed when I use my 18-55mm in manual focus because the rotation is "too soft", and I also thought that it would be "different" when it comes to adjusting the focus on a prime and zoom lens manually.

P.S. I'm quite fine in handling focus on manual film SLRs too, and it didn't give me a headache like what I do with my dslr's kit lens.

Thanks!

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My SLR nikon 3200 is having problem?

When I take photos after that the photos are automatically deleted. Can I recover the pictures? I have lost many precious pictures the flash will be working and I thought there would be all the pictures but everything was gone. And sometimes when I will take continuous photos the shutter- release button won't work. My family will be posing but the button won't work. Any ideas to recover the lost photos and how to improve my camera?

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Is DigitalOutlets a legit dslr store?

There is this online store where they sell a Nikon d600 for about $1365 and I was wondering if this store was actually legit?

http://www.digitaloutlets.net/

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