A few minutes Googling shows that most blades are made from wafer-thin blued steel, some are aluminum, some are actually brass, and some - increasingly - are plastic, carbon/resin-based, or other newfangled materials.
A few minutes Googling shows that most blades are made from wafer-thin blued steel, some are aluminum, some are actually brass, and some - increasingly - are plastic, carbon/resin-based, or other newfangled materials.
Jerry, it pays to read the question first before writing your answer. Also, what LF shutters with carbon/resin-based blades do you know?Originally Posted by jerry10
Rollei Linear Motor shutters had carbon blades. These were view camera shutters.
Great project!
Kent in SD
In contento ed allegria
Notte e di vogliam passar!
What makes a difference in the IR pass of the plastic is if its done with carbon black or a black dye. The black dye is not much better than an 87C filter. I found out the black visquene sheets I was trying to black out my darkroom with was pretty transparent to IR, I had built a simple IR meter from an IR photodiode and got a really good reading through it. Cardboard and duct tape fixed that. I decided after that the best way to black out a window for a darkroom was a well placed piece of sheetrock.
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