At 16:06 05.04.01 +0800, Jim Teo wrote:
Is it natural for the flash effective guide no. to drop when it is used for
outdoor during day time?
Manufacturers are a little optimistic when they state the guide numbers.
Indoors you will have reflections from walls and ceilings and in small
rooms that more or less increases the guide number to the one stated by the
manufacturer. If possible you should test your flash with a flash meter, in
the environment you want to use it.
Regards,
Thomas Bryhn
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