Paul,
Totally agree with your idea, but... I just tried again at 10 feet distance,
my two T32s only gave me F5.6 +0.5 EV. My room has white ceiling and very
light color wall, seems the reflection is not so effective. Tried again at
1m distance, the reading is F16 +0.4 EV. In both cases still have around
1.5 stop under.... I started to think that my flash meter might have some
problem. Does anyone have a flash meter want to join the test?
P.S. I use a lumisphere for incident measurement, I think it should be the
right way. On the other hand I found using fresh alkaline batteries with
longer charging time, the power is 0.2-0.3 stops higher than using Ni-cd,
may be due to higher battery voltage.
C.H.Ling
-----Original Message-----
From: Paul D. Farrar <farrar@xxxxxxxxxxxx>
>>
>>C.H.Ling
>
>At 1m, you are so close that the room wouldn't have much effect. If the
>flash is pointed at the meter, you need to be about twice as far away as
the
>closest good bounce surfaces to get much bounce light. In my house with 9
ft
>white ceilings, I get exactly the rated value at 9ft, about 5ft from the
floor.
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