In the course of composing my post Know your native ISO
I discovered that while Nikon say that, for the D300, "ISO sensitivities of ISO 200 or above are recommended
" (page 97 of the manual) its native ISO appears to be about 140 (from this table
As I discussed in my other post there are very
good reasons for not operating below a camera's native ISO (use an ND filter instead) so I am interested to know whether any D300 owners actually see image degradation when using an equivalent ISO of 140 rather than 200.