Re: Flash and IR filters and Konica 750

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

At 1:22 pm +0100 5/2/98, Lennart Rydstrvm wrote:

>Clive Warren wrote:
>>
>> Further to my flash filter experiments using Konica 750 with no filter in
>> the dark.
>>
>> The flash was on auto, but close enough to rate at 50ASA - no filter on
>>lens.
>/.../
>>Take your point about requiring more light though.
>
>Your flash have to work in MANUEL mode! The ASA setting can be whatever, as
>the flash delivers full power every time it is fired.
>Using AUTO mode tells the flash to use the lightsensor and cut off at some
>arbitrary point. Just like in"computer" or "TTL" mode.
>
>What filter you should use is a matter of visibility vs artistry. I have us=
ed
>89B and 87. When working for the police I sometimes flashed thru 2x87 (almo=
st
>invisible). It is really thrilling to burn 2 pieces of 4" original Wratten =
87
>AT THE SAME TIME! Don=B4t play around with those cheap Andrew Davidhazy "th=
ing".
>
>Though I am not very familiar with Konica 750, I have worked a lot with HIE
>and filtered flash.
>>From my "book of experiences" I quote:
>
>>HIE 135        Metz 45 CT-4      +Filter 87          Guide No: 28
>Manuel setting       Max power
>
>>HIE 135        Metz 60 CT-1      +Filter 87          Guide No: 42
>Manuel setting       Max power
>
>>Develop        D-76 stock           20C                  9,5 min (N)
>1 turn every 30 sec
>
>If you find something of this useful, post a copy of your "beautiful darksl=
ide
>Ektachrome shots" to your fellow listmembers. Signed, please.


Lennart, thanks for the information.  I may well try my flash gun on
manual, but had assumed the sensor to be sensitive to infrared light, and
if not should have put out full power anyway...

Will also try a more powerful flash gun.

As for the darkslide shots I am rather worried about the copyright if I
post them on a web page, however could EMail them if there was enough
demand ;-)


All the best,

              Clive   http://clive.bel-epa.com


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End of Infrared-Digest V0 #388
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