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Question: I have a Nikon D300.  Needless to say, it's on it's last leg.  Would my Sigma lenses fit this body?
Document: This body uses only the AF-S lenses to auto focus. The older lenses will mount on this camera, but they will NOT autofocus. Nikon continues to develop nice AF-S lenses  that work with this type camera, so this could be the only camera you will ever need.Edit: I would also like to add the list of accessories I always get to complete a camera purchase.
Also, the lenses offered in the kits were entry level so I would surely later wish I had upgraded to the better Vibration Resistant lenses available. My choice has been to purchase a D5200 black body separately instead of a kit with lenses. Then I selected two lenses more to my liking--Nikon 18-170mm VR to use as my "Do-it-all" lens and a Wide Angle lens for scenery and group photos. No doubt I'll grow to want a portrait lens as well someday.
I guess is because it has more megapixels. I will not say the D5200 is better than D300s. The D300s is much faster in almost everything and it also have auto focus motor build it and magnesium body. I would suggest get just the body and the 18-200mm vrII since now is $250.00 off with the camera.
I could go into a lot of technical aspects but most who read this would be lost. So I will just say that the quality of photos that I took were amazing. The upgraded 39 point AF paired with the new processor took some of the most amazing pics I have seen in what is considered an entry level DSLR. The colors just popped out at you and the images were tack sharp when using prime lenses.
I know I ordered the body only as I already have other lenses so I didn't need a duplicate lens, but the battery for my D90 does not work with this camera. I would have fully expected a battery with it. To me that is part of the body! Really irritated. I don't care if that page shows that others also ordered a battery with it. That means &#34;additional&#34; battery to me. My D90 came with a battery. Why didn't this one.
But full-frame DSLRs aren't right for everyone, and they incur extra expenses for more specific lenses as well.If you're after image-quality, video-quality, versatility, and affordability, I'd say this is the best DSLR you can get for under $1k USD. In fact, hands down, I truly believe this DSLR even has the best quality image you can get for under $2k USD.Again, I'm not a fanboy of Nikon or Canon or Sony or Pentax or anything.
There are a lot of discussions about this problem and I can confirm that the issue is real and hard to overlook.I hope Nikon tries to address the problem. If they did then I would have nothing but wonderful things to say about this camera. It's a shame.
So Nikon wins here, I would say the image quality of the D5200 is as good as the well acclaimed Canon 60D in most cases easily done (with the D5200 at a higher resolution). So the major difference of the D5200 compared with the D3200 is the focus sensor and exposure meter sensor.
Bought this camera to replace my Nikon D5000,  Got the &#34;body only&#34; because I have the 2 Nikon lenses that came with my D5000 but I use the camera 90% of the time with my Tamron 18-270mm lens. Very nice combination.Was looking at the D7100 too but if think it is not worth the price difference. For my use, it is the perfect SLR. Canon makes good camera too but I am a Nikon fan.
This is extremely useful in specific situations, such as shooting moving objects or in macro photography. The D3200 performed very well in everyday shooting, but with my 40mm and 60mm Nikon Micro lenses, the AF failed to accurately or effectively focus on very close subjects. The D5200 however is much better, the body focused efficiently on to desired subjects precisely. The focus speed is still mainly dependent on the lens.The swing-out LCD screen is useful in some situations and video shooting, but proves less useful to me.
Answer: You don't mention which Sigma lens you have, but  I have a sigma lens that fits my D5200, but make sure that the lens itself has automatic focus as the D5200 doesn't have automatic focus.