Nikon D300 Complete Manual page 691

• Shoot only at shutter speeds that are multiples of 1/120
(e.g. 1/125
1/25). Never use shutter speeds faster than 1/125 (or 1/100
in Europe). Shutter speeds that are not multiples of the AC
cycle means that you don't get complete color decays
from one or more of the phosphors.
157 I've had people report to me that even 1/125 isn't always safe (the shutter speed
should be 1/120 to match the AC frequency in the US). I haven't had problems with
this shutter speed, so I suspect that it has to do with the specific fluorescent bulbs
encountered.
Thom Hogan's Complete Guide to the Nikon D300
157
, 1/60, 1/30, 1/15, or in Europe 1/100, 1/50,
V1.02
Page 691