D800E noise reduction
After processing D800E images for about 10 months, I today realized I could have done a better job. I had set my picture control setting sharpening to 2. Not thinking I had also set my high ISO NR to normal. Even at ISO 100 Capture NX uses a value of 1 for NR. It really should be zero.
Setting sharpening to 1 and NR to zero gives a better result - far less halo, and selective sharpening with smart sharpen in photoshop gives a nice crisp result for details. Oh well, live and learn.