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Re: [OM] Vivitar 285HV Zoom Thyristor flash

Subject: Re: [OM] Vivitar 285HV Zoom Thyristor flash
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Tue, 30 Dec 2008 18:17:32 -0500
The tall bracket with it's long lever arm exerts a lot of forward 
twisting torque on the body/lens combo if the camera is tipped even 
slightly downward.  Adding 4 AA NiMH batteries at the end of the lever 
just makes you a lot more tired at the end of a 4-6 hour shooting stint. 
  You just can't hold that whole rig perfectly upright all night long.

The T-32 is pretty squat to begin with so minimizes the length of the 
lever. And the ability to leave the AAs out when using a high voltage 
supply adds even more value.  Unfortunately, the T-32 is a loser when it 
comes to manual power control.

Chuck Norcutt


John Hudson wrote:
> Chuck .... I am trying without much success to place the second sentence in 
> context with the first and third sentence. How does a tall bracket exert any 
> leverage at all and how is any leverage relevant to not having any AA 
> batteries in the flash gun ?
> 
> I'm confused :-)
> 
> jh
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Tuesday, December 30, 2008 4:04 PM
> Subject: Re: [OM] Vivitar 285HV Zoom Thyristor flash
> 
> 
>> One nice advantage of the T-32 is that it does not need AA batteries
>> when running from an external high voltage power supply.  If you put the
>> flash on a tall bracket (like a Stroboframe) the bracket exerts lots of
>> leverage.  Having or not having batteries in the flash is very
>> noticeable after schlepping camera, bracket and flash around all night.
>>
>> Dr. Flash
>>
>> Frank van Lindert wrote:
>>> The manual
>>> http://www.cameramanuals.org/flashes_meters/vivitar_285hv.pdf
>>> says YES.
>>>
>>> Frank van Lindert
>>> Utrecht NL.
>>>
>>> Tue, 30 Dec 2008 14:06:22 -0400, John Hudson <OM4T@xxxxxxxxxxx> wrote:
>>>
>>>> When using a Viv 285HV flash with the dedicated SB-4 power supply unit
>>>> should the flash gun be loaded with 4 AA batteries at the same time ?
>>>>
>>>> jh
>> -- 
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>>
> 
> 
-- 
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