Since the 5.5 inch round ones are now $92 from B & H, I've been trying to figure out a work-a-round. Does anybody know the spectral response curve of the OC filter so I can see if Rosco has anything that might work ?
Since the 5.5 inch round ones are now $92 from B & H, I've been trying to figure out a work-a-round. Does anybody know the spectral response curve of the OC filter so I can see if Rosco has anything that might work ?
There are a ton of these available used on EBay.
But in fact, I was advised advised against using them by John Wimberley. So instead, I've installed #1 Red.
I use these ones that sell new for the equivalent of about $30 USD. I'm sure someone in the USA sells them as well.
http://store.khbphotografix.com/Prem...afelights.html
I'm using these in either Amber or Red with no filter.
https://www.superbrightleds.com/more...60-degree/440/
my picture blog
ejwoodbury.blogspot.com
No fog in the darkroom. I keep that outside.
The spectrum for yellow appears noisy. Not sure why that would be. Even if real, very few peaks to the left with very little area under the peaks. The peaks or "spikeys" to the right don't matter. That is to the red end of things and paper is not sensitive there.
That said, I have 2 amber lamps and 4 red lamps. I prefer the reds since they work with more different kinds of emulsions and thus I need not worry about fogging even with ortho or the Russian paper. Finally, the total power is lower with LEDs (almost all the lights in my DR are LEDs) and the load on my A/C is lower. I like electricity but hate waste.
my picture blog
ejwoodbury.blogspot.com
Pretty cool. You could wire up light everywhere you need it, not just centrally.
--- Steve from Missouri ---
I do have some red filters I found for the safelights, but I much prefer the OC filters. The red and amber LED light look interesting and I might try them. I've always wondered-which kills the safelight filters, the light or the heat from the light bulbs. I tend to think it's the heat.
I do think I'll be buying white LED bulbs for the normal room light....no afterglow problem-plus I want to keep heat down.
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