Nikon D200 - Manual (Page 25)

Long Exp. NR (Long Exposure Dark-Frame Subtraction Noise Reduction)
OFF: Default. Leave it here.
ON: Don't use this. If you do, the D200 will double the amount of time you have to wait
around for time exposures of 10 seconds or longer. The D200 is so good you don't need
this. Nikon only includes this because old-timers would get peeved if it was missing.
I have details with examples at D200 Dark Exposures .
Firmware Defect: the help menu says exposures need to be 8s or longer for this NR to
take effect. It's wrong - they have to be 10s or longer, or longer than 8s.
High ISO NR (High ISO Noise Reduction)
This lets you control the strength of the noise reduction (smoothing) applied at high ISOs.
I find the default NORMal position optimum.
You can set it higher, but it removes subject texture.
You can set it lower and get more noise.
I have details with examples at D200 High ISO Noise Reduction .
ISO Sensitivity duplicates the ISO button.
I use 100 and AUTO.
Nikon really screws up, because the AUTO ISO controls are hidden here in the Custom
Settings Menu!
Image Overlay is a parlour trick. It allows you to overlay two images.
It only works with NEFs.
Multiple Exposure is unique. It lets you do what we did back on film.
This works and it's easy to use. Unlike film, it's smart enough to compensate the
exposures so they add together without overexposure.
To use it:
PDF by Paul Deakin - 25 - © 2006 KenRockwell.com