That's very good. But I suppose that's until the ready light comes on
which is not a full charge. Here are some T32 performance notes I made
about 5 years ago. Note the recycle times at the bottom and the failure
to reach specified guide number output (ever) on any of 4 flashes.
Battery voltage levels mentioned are with no load. For those who may
not be familiar with the notation for stops in tenths from my Sekonic
L-358, f/5.6.8 means 8/10 of the way between f/5.6 and f/8.
----------------------------------------------------------------
T-32 flash power and recharge test
@ 10 feet, ISO 100, no diffuser, max power
Center Edge of 28mm field of view
1 unit = f/ 8.0.2 f/ 5.6.8
2 units = f/11.0.1 f/ 8.0.6
4 units = f/ 16.0.1 f/ 11.0.7
@ 10 feet, ISO 100, small umbrella, max power
Center Edge
1 unit = f/ 4.0.0 f/ 2.8.6
2 units = f/ 4.0.9 f/ 4.0.5
4 units = f/ 8.0.1 f/ 5.6.7
@ 10 feet, ISO 100, no diffuser, at 1/4 power
Center Edge
4 units = f/ 4.0.2 f/ 2.8.7
Note: All 4 units test within 1/3 stop of each other. Output is very
sensitive to battery voltage. AA alkalines produce about 1/3 stop less
output after 20-30 flashes.
Output with alkaline AA’s at 1.54 volts = f/ 8.0.4, at 1.33 volts =
5.6.9. Actual measured guide number with fresh alkalines is only 84 vs.
spec of 104.
5.6.9 is the max observed power output using 1800mah NiMH batteries or
0.5 stops below max with alkaline.
A single T-32 is approx. 100 watt seconds compared to Lumedyne at 100 w/s
Recycle times with 1800mah NiMH batteries. Power measured at 10 ft.:
Time Power, f/stop
5 sec f/ 4.0.9
7.5 sec f/ 5.6.3
10 sec f/ 5.6.6
15 sec f/ 5.6.7
20 sec f/ 5.6.8
Note: Max of f/5.6.9 observed for NiMH batteries still not achieved in
20 seconds.
-----------------------------------------------------------------
Chuck Norcutt
C.H.Ling wrote:
> Don't know about both batteries but the C cell alone in PBG2 gives 4 seconds
> recycle time with full dump.
>
> C.H.Ling
>
> ----- Original Message -----
> From: "Chuck Norcutt"
>
>> How fast is "very fast"? I've never put C batteries into my PBG2.
>>
>> Chuck Norcutt
--
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