Peter Jason writes:

Like laser pinpointing on rifles and pistols.

I need it for shooting from the hip at weddings
and the like when the exposure is set for
pinpoint.

Well, the Nikon flash focus assist grid works pretty well as an aiming
device, and has the additional useful feature that it goes off before
the picture is taken (a definite issue when trying to just duct-tape a
laser pointer to your camera or something).

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