How to test working condition of the AF assist beam in external flash units?


Sep 25, 2004
350
0
0
33
JE, Singapore
#1
Hi fellows, a quick qn here: may I know how to test whether the external AF assist beam of an external flash unit is working or not? Sometimes the ambient light while buying, is quite bright so it won't get triggered so quite hard to tell its condition. Some flash got a button to test-try the main flash itself, but is that suppose to test-fire the AF assist beam as well, or got other ways to verify?

Thanx in adavnce.
 

Dream Merchant

Moderator
Staff member
Jan 11, 2007
9,659
6
38
#3
Look for in-depth technical and user reviews.
 

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