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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: Wed, 31 Dec 2008 20:08:15 -0500
MMV... My Mileage Varies.  :-)

Chuck Norcutt

John Hudson wrote:
> 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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>>>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>>>>
>>>>
>>>
>> -- 
>> _________________________________________________________________
>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>>
>>
> 
> 
-- 
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