Thanks to Foxy's chart on light posted yesterday, I had a thought, and as I had failed on the zoom snoot front, although zooming can be achieved by moving the flash relative to subject. Decided to try a different tack.
I made a thin slice of metal with a 20mm hole so like a large washer. ( I know, but I do not have any black card to use instead ) This made the equivalent of the old fashioned Waterhouse Stop.
Placed over the front of the 5" length snoot with straws, the object was to see if I could reduce the size of the outputted light circle. It works and results in the attatched graphic.
Knowing Mark has made rectangular units, this principle would allow moving from rectangular through square to circular light pattern with different shaped cut cards.
Don
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