On a 1:1 basis, far better. For one thing, the D2h has an extra stop native (200 vs 100). But downsized to 4mp, I think it's pretty hard to tell the noise apart. However, you also have to do a fair amount of work on the D2x file to increase contrast, as when you shoot that one at high ISO (which surely means 800 or more, and some would say 400 or more), you lose a LOT of contrast and dynamic range. The D2h loses contrast and dynamic range too, just not nearly as much.
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!
Thanks. I never shoot my D2x at over 800 ISO and rarely that high because of the loss of contrast as you pointed out. I wanted to know what to expect from the D2h, which information you have provided.
One additional point of interest is that like dozens of posts back through the years, posters seem to be divided about 50/50 on which of the two has better high ISO capability. Out of the two responses I have received so far one says D2x and one says D2h. I guess I will only really know for sure when my D2h arrives. The only reason I purchased a D2h was to evaluate this.
My opinion on the D2X vs D2H high ISO noise is only a result of comparison photos from Moose's review. I sold my D2H in 2005. I have always liked the photos it produced. I revisited some of those photos today and am still impressed with their sharpness and contrast. Actually I have been planning on getting another D2H because of the sensors better sensitivity to UV and IR. I currently use the D1H for UV but the noise is a problem. Let us know how the D2H works out for you when you get it.
I had 2 D2x bodies and 2 D2h bodies. I used the D2h's almost exclusively. For some reason just liked them better. Up to ISO400 I couldn't really detect much difference with the 2 lenses I mostly used,an 80-200 2.8 push-pull and a 120-400 Sigma. I am a poor person to answer though because I can't detect the very minute changes most on these forums obviously can. There will be 2 images posted with the explanation that one has poor this or that and chances are I can't detect ANY difference. Above ISO 400 even I can detect the D2xhas better images. Due to some necessary auto repairs I had to sell the D2h's a couple of weeks ago and I already miss them.