Capture NX saves lower-quality image without noise reduction

I've just noticed that some images I've worked on

in Capture NX (version 1.1), where I've applied

Noise Reduction (Better Quality) get saved as TIF

files in a noisier form than is seen on the screen.

That is, if I save the file as a 16-bit TIF, then open

it up in Capture NX again, to compare side-by-side

with the image I saved, there is an obvious difference.

This doesn't happen if I save it as a NEF file, but

then it takes ages to reapply the noise reduction

when it loads. (And of course one needs to save as

something other than NEF if other people are to look

at the image.)

This makes the noise reduction option completely

useless. Has anyone else noticed this problem? Is

there a work-around?

I'll try to find a way cause I'm of the few that works with Capture NX. Also, I contacted Nikon support and i let you know their answers ASAP :

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Further investigation shows that this doesn't always happen.

It seems that it's some interaction with doing other things too.

(Also, note that my original files are 16-bit TIFs, not raw NEF

files.)

So I think that the workaround is to do noise reduction first,

save the results, and then work on this noise-reduced version.

That may be desirable anyway, since the noise reduction is very

slow, so one would want to do it only once, rather than over and

over.