He did not say it was Jpeg and there is nothing wrong to use P mode. In fact P mode has nothing to do with color. And frankly I do not see anything wrong with the color either.
Wheel looks black at 2-3 o'clock regardless under mixed light.
?? But he posted a JPEG... And he also said:
everything else set to standard
...which means "Picture Controls are set to 'Standard'" (and this only affects JPEG's). I don't think there are any other settings that can be set to "Standard" in the D810.
Agreed there is nothing *technically* wrong with using "P" mode, though it's not something I'd do. Now that I think about it, I don't even think I know how to use P mode...like I have no idea what the dials would do in P mode???
I feel bad for saying this, but when I read the original question, I honestly thought it was a joke. The D810 is marketed as a pro camera, and I think we all typically expect that owners know some of the basics and have 'graduated up.' It's not the best camera for learning on.
...but I think to most of us, this seems like buying an advanced driver's car (like a BMW M-series), ignoring all of the "M Button" controls (like the EDC, DSC, Steering & Throttle responses, etc.), hiring a chauffeur to drive you around in it, and then asking "how do I make the car turn faster?"
So beyond shooting in "P" mode or shooting JPEG's, this is a very strange question. It also implies that the OP may not have invested the time to read up on and understand the answers to some of these questions--which are answered pretty much directly in Nikon's literature (
See page 148-152 or search for "redder"). That's the user's manual that comes with the D810. The first paragraph even tells you what to do "if the desired cannot be achieved with auto white balance..."
There is an educational journey, but it's just strange to start with an advanced camera, not reading the manual first, and asking a bunch of enthusiasts such a basic question that's more to do with the expertise (ie. "driving") rather than the equipment (ie. "car").
As far as the colors go, this is obviously subjective. Sounds like he wants a punchier and cooler image. And I think most people here would obviously know how to correct for this. Nikon even has a generic, step-by-step
guide to using picture controls, with examples.