I'd go for the D610. Better image quality and ISO performance.
Of both, the D610 is the better cam -quality wise- but if the lens will do well in your preferred situations you'd have to ask someone else.
The Tamron is a great lens for what you are interested in. Would work well off either camera, but the 610 is the way to go if you want full frame and can swing the cost. I was not very impressed with my 18-140 when I used it on my 7100.
I also would recommend the FX D610 if you feel you can afford it! It would be better for your uses than a DX D7200!
If you were shooting birds and macro, the DX can be handy with the crop sensor. But what your shooting the FX D610 would be just great!
I think you need to ask yourself what will I use a new DSLR for? Do you do more portraits? More Landscape shots? More wildlife/bird shots? Both are excellent camera bodies, but each has a designed use to suit the potential photographer's needs. Also, what additional lens do you own/ Are they all compatible with either new camera body? Last, but not least is the budget to buy a new camera body now, plus what you may need to purchase for on going upgrades to your equipment. If you decide you need bigger, better lenses down the road take that into consideration now. Also both create very megapixel files, do you have the capacity on your current computer to process theses large memory eating files? Just some food for thought before you buy.
Welcome to the forum
Oh I missed that! Welcome to nikonites! I hope you'll enjoy it here with us!
D610 with 24-70 VC
or D7200 with sigma 18-35 ART.
I will play the devil's advocate here.
If you don't know which one you need or want, how do you think we can?
Will this be your first dslr? If yes, then I'd recommend the D7100 with the 18-140 PLUS the 35 1.8 and the 50 1.8. Then you invest your time learning some photography post processing software.
A camera is just a tool to help you produce images. You can make great pictures with about just any camera like you can make great drawings with any kind of pencils...
You could even buy a second hand D90 or D300 and it could take you quite a while to grow out of them as they are very good cameras with which you can learn.
Since we don't know what your experience with photography is you should NOT take our advice too seriously (even my own ).
Good luck and happy shooting.
I'm assuming this will all be for personal use and "portrait" doesn't mean you have immediate aspirations of shooting others. With that said, speak to most portrait photographers and they'll tell you that 70mm on a full frame camera is barely a minimum focal length for a good looking portrait. Many use a 70-200mm as their portrait zoom, but that's not going to cover you for your baby and family shots.
So, with that in mind, and given that this is your first DSLR, I strongly recommend the D7200 and 18-140mm. It gives you the effective focal length a 27-210mm would on the D610, so it's going to allow you to shoot just about anything you want. Good lens, great camera. Go with that, learn and save for better glass. You don't need FX to do great portraits, even commercially.
Ah, then get the FX. And if you can a 35, 50 & 85 prime combination. You can find these in the D instead of AF-S and they might cost less than the 24-70. But a 24-70 is a nice tool to have.thanks for reply.
actually i was semi pro before. for fashion shot. but last few years i am totally out of photographer world. no idea where is going hardware and trend etc. i know what is FX and DX . i used before DX and FX too. but now i don't have any gear even. so i pick one DX and one FX which can be meet my budget but it for personal family use not for professional. most wife will use. she is new for dslr