I forgot to mention that you also need an umbrella bracket/adapter. I
have Manfrotto units like these
<http://www.bhphotovideo.com/c/product/546375-REG/Manfrotto_by_Bogen_Imaging_026_026_Swivel_Umbrella_Adapter.html>
but the much less expensive Impact unit will work well too
<http://www.bhphotovideo.com/c/product/298709-REG/Impact_3117_Umbrella_Bracket.html>
Although only illustrated on the Manfrotto, both units include the
required male and female threaded studs required to mount a hot shoe (or
my homemade bracket) on top and attach to a tripod or light stand on the
bottom.
Chuck Norcutt
Chuck Norcutt wrote:
> OK, I see some construction and performance detail is in order here. :-)
>
> If you look carefully at the bottom side of the outer ends of my simple
> aluminum bracket in the T32/umbrella photo
> <http://www.chucknorcutt.com/gear/Umbrella%20adapter%20mounted%20on%20tripod%20%232.jpg>
> you will see an extra hole drilled on each end. Those two holes allow
> for another pair of T32s to be mounted upside down and outboard of the
> first pair (they need to be outboard in order to leave enough space to
> operate the locking handle on the umbrella adapter). Four T32s are
> about 1/3 stop more powerful than an AB800 with slightly less falloff at
> the edge of a 28mm field of view.
>
> But four T-32s are kind of cumbersome. Two work pretty well and are
> only 0.7 stops less power than an AB800. Both have about 1/2 stop
> falloff at the edge of a 28mm field. It also helps to resolve what I
> feel is the Achilles heel of the T-32 relative to other flash units. It
> only has two manual power settings, 1/4 and full. But with a pair of
> units you can have 1/4, 1/2, 1, 1-1/4 and 2X. That, along with
> adjusting the flash distance a bit, will give you what you need.
>
> As pictured, the two T32s are setup to allow triggering via TTL cord
> plugged into the TTL autoconnector T20 on the right or via PC cable
> plugged into the hot shoe adapter on the left. Not shown is that the
> flashes are normally connected via a TTL autocord T 0.3 meter running
> between their TTL sockets on their left sides. Triggering via a TTL
> cord using a TTL capable OM will give TTL flash control from the pair.
> Triggering from the PC cord connector fires both flashes (which must be
> in manual mode) but with no exposure control. It's not possible to take
> advantage of the flash's normal auto mode since the auto mode sensor
> only sees the inside of the umbrella and not the subject. It would
> work, however, if you took away the umbrella. You might consider using
> ceiling bounce for diffusion without the umbrella.
>
> I've only had the CSRBs for two days and so far haven't used it for
> anything other than a few test shots with a T32 and Canon 540EZ to make
> sure they work. But connected to my paired T32's I would use a single
> hotshoe/miniphone connector. Both flashes can be tied together with the
> 0.3 meter autocord so if either of them fires the other will too. The
> dual hot shoe arrangement is not required. But, if I was using other
> than T32s, I still wouldn't use the dual hot shoe arrangement, at least
> behind an umbrella. In this closeup of the umbrella adapter bracket
> <http://www.chucknorcutt.com/gear/Homemade%20bracket%20&%20various%20hotshoe%20adapters.jpg>
> you can see two optical slaves which can be had at any camera shop or on
> ebay very cheaply. Attach one flash unit to the hot shoe trigger
> adapter. Mount the second flash on the optical slave with the slave
> lens facing into the umbrella. When the first flash fires the second
> flash will also fire when it sees the first flash reflected off the
> inside of the umbrella. Even without the umbrella the second flash
> might be fired by the optical slave if the room was not too large. The
> simple little optical slaves are quite sensitive.
>
> Chuck Norcutt
>
> Robert Burnette wrote:
>> Neat idea, Chuck. I have three T-32s, but I have never used them with
>> an umbrella as you have. It is easy to get tunnel vision when it
>> comes to photography equipment use. Do you use the the DSY-HS (two
>> hot shoe to one miniphone plug) cord with the T-32s and the CSRB or
>> do you have a better arrangement?
>>
>> Curiosity question: Would the T-32s and an umbrella work on auto mode
>> as TTL flash with an OM-2 or an OM-4 if the OM connectors cords are
>> used? I have the OM autoTTL multiconnector and a couple of TTL
>> connector cords. Hmmmm. I may need a CSRB unit too. ;o)
>>
>> Robert
>>
>> Chuck wrote:
>>
>>> I purchased the battery powered receivers since I use radio slaves
>>> with portable flash units as well > as the Bees as shown here
>>> <http://www.chucknorcutt.com/gear/Umbrella%20adapter%20mounted%20on%20tripod%20%232.jpg>
>>>
>>> When that photo was taken I was using cords. The shoes have since
>>> been changed to favor Paramount hot shoe to miniphone connectors
>>> which will plug directly into Pocket Wizards or the Alien Bee CSRs.
>>>
>>> <http://www.paramountcords.com/products.asp?cat=70>
>>>
>>> Chuck Norcutt
>>
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