TS... Thanks for starting the thread. After long wait, I finally bought Nikon D610 yesterday... Nice camera look solid. Jumped from legendary D90. Just played around a while. So I can only compared to D90.
First noticeable difference is white balance... compared auto to auto, D610 is close to natural color with slight warm tone, whereas D90 AWB is like white neutralized image. Sharpness is same but definition is slightly better in D610. Holding is ok, may be need to get used to the rubber grip vs smooth plastic on D90. Little heavy. Feel the D610 body gets warmer after 15min or using Liveview mode. I used SD card class 4, so the transfer file is bit slower. I need to get Class 10 or more. So far I am playing with JPEG and auto mode. ISO noise is considerably low but very little RGB color noise can be seen on the shadow area at over ISO 2000 at 100% view..
I find Q, Qc mode is boring to me and is not really quiet, its delayed shutter release. Yet to learn more, but this could be a good start to keep going...
below are some of the shots taken this morning... unedited, just crop only.
sharpness was set as 2 point in the 'standard' mode. I am using as it is.
normal to 100% crop shared for viewing pleasure...
Taken with nikon 55mm f3.5 macro, manual focus + in-build flash using live view handheld. slightly cropped.
here is the 100% crop
Another un-cropped butterfly shot.
100% crop
Here is the landscape - sky and tree taken with 50mm f1.8d lens at F7.1.