|
The Canon has internal ND filtering and considering the size of the chips you should be wary of using external NDs, unless they're super multi-coated, spotlessly clean and well hooded.
Uping the shutter speed quickly leads to CCD smear on the 30, so beware taking this route. So yes - let the camera decide in auto, then lock in that setting for your shot. Don't let diaphragmm bounce spoil the shot just because a black car or a white shirt fleetingly crossed your frame.
tom.
|