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Re: [OM] Dr. Flash asks a flash question

Subject: Re: [OM] Dr. Flash asks a flash question
From: Ken Norton <ken@xxxxxxxxxxx>
Date: Fri, 13 Dec 2013 22:13:34 -0600
Overhead Transparency Film.

Or just a sheet if tissue....

On Fri, Dec 13, 2013 at 10:03 PM, Chuck Norcutt
<chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> OK, which of these OTFs are you talking about?
> <http://en.wikipedia.org/wiki/OTF>
>
> Chuck Norcutt
>
>
> On 12/13/2013 7:51 PM, Ken Norton wrote:
>> A sheet of OTF is a good option. Sacrifice one sheet, cutting it to size.
>> Probably two layers will be about right.
>>
>>
>>
>> On Friday, December 13, 2013, Chuck Norcutt wrote:
>>
>>> The question then is how to cover half the flash without disturbing its
>>> angle of coverage... both horizontally and vertically.  My little black
>>> dots distributed around?
>>>
>>> Chuck Norcutt
>>>
>>>
>>> On 12/13/2013 6:14 PM, Ken Norton wrote:
>>>> I would either cover up half the flash or throw a modifier on it.
>>>> Everything I have has more granularity.
>>>>
>>>> On Fri, Dec 13, 2013 at 4:59 PM, Chuck Norcutt
>>>> <chucknorcutt@xxxxxxxxxxxxxxxx <javascript:;>> wrote:
>>>>> Anybody have any suggestions on how to cut the light output of a T-32 in
>>>>> full power manual mode by 1/2 stop?  Using the low power setting on a
>>>>> T-32 drops the output by 2 stops.  Using a filter holder and a T-32 ND4
>>>>> filter also drops it by 2 stops while the ND8 drops it by 4 stops.
>>>>>
>>>>> I can't use auto or TTL modes so have to figure out how to throttle it
>>>>> back in manual mode.  I've thought about using some sort of ND gel
>>>>> filter but these things tend to cost more than the present value of a
>>>>> T-32.  I've thought of sprinkling little stick-on black dots over the
>>>>> surface to block the light but don't know how well that would work.  Any
>>>>> blockage needs to be distributed over the surface fairly evenly since I
>>>>> don't want to block the angle of coverage.  Maybe a layer or two of
>>>>> exposed B&W film?  What can you suggest that I haven't already thought
>>> of?
>>>>>
>>>>> Thanks,
>>>>> Dr. Flash (looking for lower power)
>>>>>
>>>>>
>>>>> --
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>>>>>
>>>>
>>>>
>>>>
>>> --
>>> _________________________________________________________________
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>>>
>>>
>>
> --
> _________________________________________________________________
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> Themed Olympus Photo Exhibition: http://www.tope.nl/
>



-- 
Ken Norton
ken@xxxxxxxxxxx
http://www.zone-10.com
-- 
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