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Re: [OM] IMG: Applying Fill Flash

Subject: Re: [OM] IMG: Applying Fill Flash
From: "Jim Nichols" <jhnichols@xxxxxxxxxxxxx>
Date: Wed, 18 Aug 2010 23:11:59 -0500
Further searches revealed that the E-510 flash trigger circuit is limited to 
6 volts.  Some safety gadget is required to protect the camera circuit.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Jim Nichols" <jhnichols@xxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Wednesday, August 18, 2010 11:05 PM
Subject: Re: [OM] IMG: Applying Fill Flash


> Chuck,
>
> I took the challenge.  I did some research online and found some
> information, as well as instructions for testing the flash circuit 
> voltage.
> My Braun 2000/28BVC unit measures 20.5 volts with fresh batteries.  I am
> still searching for the Olympus specs on the camera circuit, but I suspect
> it is around 12 volts.
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message ----- 
> From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Wednesday, August 18, 2010 7:57 PM
> Subject: Re: [OM] IMG: Applying Fill Flash
>
>
>> The Braun might have a very high trigger voltage but... maybe not.  Why
>> not measure it.  The E-510 manual doesn't give any high voltage warnings
>> re using "unspecified external flash units" but does warn about possible
>> interference from incompatible TTL and other electrical contacts.
>>
>> The Minolta A1 is spec'd for flash up to 400 volts.  The Canon digitals
>> (except for first two models: D30 and 10D) are spec'd for 250 volts.  I
>> suspect that the 510 can probably handle fairly high voltage as well.
>> It can certainly handle a T-32 at 12 volts.  You can probably buy a
>> Sunpak 422D (with OM TTL foot if desired) for about $10-15.  About 1/2
>> stop less power than a T-32 but, unlike the T-32, has a 5 stop range on
>> the manual exposure control.
>>
>> Chuck Norcutt
>>
>>
>> Jim Nichols wrote:
>>> Hi Dean,
>>>
>>> Thanks for the details of your flash setup.  Alas, in my case, I am 
>>> using
>>> the flash that is built into the top of the Olympus E-510.  I am afraid
>>> to
>>> use my old Braun Hobby flash with modern camera electronic circuits, and
>>> have not yet found a need to spend for a compatible external unit.
>>>
>>> Thanks for the kind words about the image.  It came from my first day of
>>> experimenting with the flash unit outdoors.
>>>
>>> Jim Nichols
>>> Tullahoma, TN USA
>>> ----- Original Message ----- 
>>> From: "Dean Hansen" <hanse112@xxxxxxxxxx>
>>> To: <olympus@xxxxxxxxxxxxxxxxx>
>>> Sent: Wednesday, August 18, 2010 10:39 AM
>>> Subject: [OM] IMG: Applying Fill Flash
>>>
>>>
>>>> Jim recently posted:
>>>>
>>>> "I decided to try using minimum fill flash in closeup shots outdoors.
>>>> In this case, it helped the flower considerably, but washed out the 
>>>> pale
>>>> Clouded Sulphur Butterfly.  With darker subjects, it appears to work
>>>> better.
>>>>
>>>> http://gallery.leica-users.org/v/OldNick/Total+Immersion.jpg.html
>>>>
>>>> The butterfly was immersed as deeply as possible in the deep-throated
>>>> bloom.
>>>>
>>>> Comments and critiques welcomed.
>>>>
>>>> Jim Nichols
>>>> Tullahoma, TN USA"
>>>>
>>>>    For many of my butterfly shots, I use a T-32 flash mounted on a
>>>> Bogen "Magic Arm," and I can put the flash a foot or more away from the
>>>> camera.  I like to have the T-32 well above the axis of the camera lens
>>>> (usually a Tammy 60-300 on the OM 65-116 auto extension tube) and in
>>>> front of the lens, and pointing downward.  This lets the fill flash hit
>>>> the butterfly's wing at a very oblique angle, and this oblique angle
>>>> both reduces the "washed out" exposure that an axial flash will give 
>>>> and
>>>> helps bring out the veins and details in the wings.  In Jim's shot, the
>>>> sun appears to be coming from about 1 o'clock, judging from the shadows
>>>> on the leaves.  The fill flash leaves a slight shadow of the left wings
>>>> on the upper side of the right pair of wings.  Where's the flash
>>>> located, Jim?  It seems to be coming from below the axis of the lens.
>>>> Using axial flash with butterflies, whether reduced or not, will, I
>>>> feel, decrease detail in the wings and, too often, give a washed out
>>>> exposure.  This is much less likely with an off-axis flash.  (I know
>>>> I've explained this before.)
>>>>    Exposure of the flower and leaves is very nice.  Overall, an
>>>> interesting shot.  Actually, it's maybe the first time I've liked a 
>>>> shot
>>>> that doesn't show the whole butterfly.  The next step in this direction
>>>> will be to photograph a bumblebee gathering nectar or pollen from a
>>>> closed gentian--the bee forces the closed petals apart to enter the
>>>> flower, then it totally disappears inside the bloom, which closes up
>>>> again while the bee is feeding.  I took a Super 8 movies film of a
>>>> closed gentian "giving birth" to a bumblebee as it backs out of the
>>>> closed flower.  This always brings a laugh from an audience.
>>>> Dean
>>>>
>>>> -- 
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>>>>
>>>>
>>>
>>>
>> -- 
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>>
>>
>
>
> -- 
> _________________________________________________________________
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> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
> 


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