Lee_Hend wrote:
I'm just getting back into the photography game (Check out my Introduction).
I did check your introduction. It tells some, but not all, of what is needed to answer your question here.
You could be, or maybe I should say very likely are, sitting on some extremely valuable work in your garage! Maybe valuable in terms of money if you work it right; but almost certainly very significant in terms of culture. Treat it carefully.
Lee_Hend wrote:
3 months I purchased the Nikon D3200 kit. Camera body w/ bat and charger as well as 18-55 and 55-200. I have found this a nice start but I think I want a D610. Can anybody tell me what to look for in so far as picture quality goes between the two cams?
What kind of photography do you expect to do? Do you want to print? If so, how big? Are we thinking fine art, Street Photography, studio work, Landscapes, Travel, Wildlife, Sports, grandchildren, or what?
The differences you might be concerned with for each and any of those take up a paragraph or two, minimum. I might talk about one or even two, but all of them???? Nahhh... :-)
But the biggest difference is the dynamic range. Be careful comparing because each system of measurement is unique and can't be compared to any other. Here is a really good graph generator for data collected by Bill Claff. You can select which camera is graphed. This URL will open with D610 and D3200 graphs on the same chart.
http://home.comcast.net/~NikonD70/Charts/PDR.htm#Nikon%20D3200,Nikon%20D610
You'll find that almost any current Nikon DX camera will be very close to what the D3200 is, and almost any current Nikon FX camera will be close to the D610. That big increase in dynamic range is significant and inescapable. (Find the buttons for charting an "Ideal DX" and an "Ideal FX".)
That is the most significant difference between the D3200 and D610 that is obvious as "Image Quality". But of course the D3200 is positioned as the low end entry camera for the entire Nikon line of DSLR's, and the D610 is the low end of the FX line. The D750 has more bells and whistles, the D810 has even more, and if you ever use a D4S it will spoil you (to the point of making you wish the D810 had the same feature set).
Lee_Hend wrote:
Also, I'm selling the two kit lenses because I now use the Tameron 18-200mm F3.5-5.6 and the Tameron 75-300mm. But I think they both are DX. Will they be a big impact on the full frame D610? Or should I just purchase all new FX lenses?
If you really are going to get a full frame body, whether it's a D610 or something else, you'll want to move to FX lenses rather than DX.
You'll also want to consider the differences between superzooms (anything with a zoom range of more than 5:1) that are virtually all "consumer grade" and those with less zoom range (maybe even with a single fixed focal length for some special purpose work) that are considered "professional grade".