Originally Posted by
Pappadi
I am new to digital photography. Just started a few days back with my new Nikon D5100. So I cannot dare in to a comparison of two digital cameras. I was also toying with the idea of buying D7k because I have seven nikkor lenses(including three primes) from my early film days.Budget was limited but then I can use all of my old lenses with D5100. Auto focusing was the main non-facility. I didn't consider that VERY important because I was always doing it manually. The only limitation, I feel, is the crop factor. If necessary - like for copying old slides - an extension tube can be used or make one for that matter.
Regarding the life expectancy of D5100,I think it wont last long, considering its use of light though tough plastic for body. But then you cannot expect a long life like Nikon FM2, F4, F90X|S or F5 have. D5100 is not designed for a long time use, I presume.The present day commercial philosophy dictated by the technological vagaries and sellers economics (not buyers) future models will bear the same stamp. D7K may be of the same clan. If a new D7.1K comes out it will bear the same rule.
If budget is not a constraint why not a true pro like D3X or D3S? For me budget was a real constraint. And so I am prepared to sacrifice the comfort of auto focusing and one or two other facilities.
The 18-55 VR kit lens did not give me good results - may be I am wrong because I have only a few days experience with D5100.I am still learning.
There is a Compact Field Guide for the Nikon D5100 by David D. Busch. Publisher:Course Technology PTR. There may be others, say from Peachpit.