I have a Stroboframe [essentially, three sides of a square] on which the
flash gun is held at the left hand end of the upper arm. The camera is held
on a plate attached to the lower arm. The plate itself can sit parallel to
the lower arm or be moved in a closewise direction through 90 degrees such
that when the camera is taking a photo in vertical or portrait mode the
flast gun is still vertically above the lens axis.
Having four or however many AA batteries in the flash gun cannot exert any
forward twisting torque on the body / lens combo. The flash gun is detached
from the camera body.
The only impediment to having a few extra ounces added to the flash gun in
the form of 4 AA batteries is that the human being carrying the entire rig
will be exhausted three or four minutes ahead of the time had those four AA
batteries not been included in the flash gun !
Several years ago I shot a wedding using an OM4T and a Metz 60 CT4 [not
using the Stroboframe!] . The weight of the dry fit battery carried on a
shoulder strap was a real pain ............. definitely more than the
marginal to non-existant additional weight of 4 AA batteries :-))
jh
----- Original Message -----
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, December 30, 2008 7:17 PM
Subject: Re: [OM] Vivitar 285HV Zoom Thyristor flash
> 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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