noise reduction - for long exposures - leave this to Auto unless you plan to do manual dark frames and post-process
noise filter - high ISO noise reduction - generally leave this to LOW
white balance (WB)
All mode WB - set same WB to all modes
Keep warm color in Auto WB when shooting in warm light - I prefer this to be OFF
flash WB - automatically set WB when using flash - off / auto WB / flash WB
color space - sRGB / Adobe RGB
shading compensation - auto correct for vignetting depending on lens used
jpeg image size / compression quality for each jpeg setting
pixel count - set pixel count for M and S jpeg settings