just got mine today and noticed right away that it's a LOT different than the 5100. still have to figure out how certain things work but one thing i noticed off the bat that i didn't like was having to press a button just to turn the mode dial. just too awkward having to use two fingers instead of just turning it with your thumb. also, what is that other dial underneath it used for that you also have to press a button to release?
i'm not gonna return it of course for such small things but it is more inconvenient.
You just moved up to a better camera, don't let the first different buttons fool you, it's just a question of getting used to. After some times, you'll never want to go back.
I'd not put too much importance on senscore and lenscore. I checked them out some days ago and there's a couple of things that make me frown.
The idea everything can be tested independently might feel intuitively right but even so makes little sense.
The problem I have (but who am I?) with their lens tests is that the performance of a lens is relative to the camera/sensor used. While putting them all on a non-standard sensor and testing them might show the individual differences between them, it says nothing about how a lens performs on which cam and if lens A is therefor a better investment than lens B.
At DxO, I can check all the individual measurements of any lens in their dbase linked to any cam in their dbase. That way I know exactly what to expect, where it performs best and when the performance drops. I can compare that to other lenses available for my cam and then decide which I prefer or which lens is worth the price differences. All lenses are tested throughout their range at about all aperture settings.
I'm not sure if I misread it in the past but lenscore seems to limit the range it test which implies that especially non-primes will suffer heavily if any of those selected ranges is a weaker part. They only test FF lenses but if, as an example, they'd tested my Tam 150-600 at 150-300 and 600 or do the same at every focal length, the more extensive test will likely have the lens score higher in comparison.
Any lens tested there only shows the difference between A and B but says nothing that is relevant to me as the owner of a specific cam. That A is better than B does not necessarily imply the same is true on my cam.
For sensors I wonder about the single lens use to test them. Since we know lenses perform differently on different sensors, here too that problem will surface. Also, since they only use the 85mm 1.4, they can't be but overrating crop sensors in respect to full. Every lens will perform better in the center than the corners regardless how good the lens and every DX will mainly use the center of that lens during those tests. In the end, we're stuck with the same problem; what do those scores really tell me?
Personally I don't need the overall score. That's nice for headlines but the only thing that might tell me something is seeing the data of the sensor and lens at work. It might still differ slightly from my lens or sensor but will still be more accurate and usable than the numbers of senscore and lenscore.
Btw, you're right that the performance (where it matters) of the D750 and D610 are fairly equal but that can even be said of the D810 in comparison. They haven't been taking giant steps the last years. Personally I'd again buy the D750 simply because it is newer technology and has some more bells and whistles. But if the D610 gets even cheaper, that wouldn't be a bad choice as a second cam for me.
CameraLabs gives good results. I often read their reviews.
.... but DxO simply provides all the information I need when making the decision. For some lenses it matters little to me how they perform at a certain length or aperture and that's something I can check there.
Ok I understood it is mainly on lenses that you prefer DXO information. As you state for lenses it is linked to your use and people should remember that they are important in the equation on the system they choose. e.g. the Tamron 28-75 scores poorly, I bought it since the use I have foreseen for it, it is pretty close to 3 times more expensive lenses.