I was just about to add that I have some Edmund IR blocking (absorptive) glass in front of the halogen lamp now. I will look up the part number. My orthoplan halogen LH has this already. I am planning on replacing the halogen lamp with an LED in the future, so I won't be able to just fire the flash directly through the lamp, which means I'll have to eventually go to a beam-splitter design or make a fast pulsing circuit for the LED and replace both lamp and flash gun. The pulsed / CW LED supply is my best option, but I need to get the time to design and fabricate the board.
Best,
David
Question: Electronic flash adaptation and Köhler
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