----- Original Message ----- From: "Nicholas O. Lindan" <nolindan@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx> Sent: Wednesday, August 15, 2007 4:47 PM Subject: [pure-silver] Re: Contrast paper developer
That should still not make a big difference for variable contrast filters."Richard Knoppow" <dickburk@xxxxxxxxxxxxx> wrote:Tungsten-halogen lamps generally run at about the same temperature as plain tungsten. Tungsten enlarging lamps generally are around K3000. The color temperature of household tungsten lamps varies with the wattage but is around K2950 on average. Standard lamps for color photography are K3200. Photoflood lamps are around 3400 but get this high temperature because they are run overvoltage and have very short lives.It depends a lot on the bulb and it's intended application.For photography most integrated reflector tungsten halogens,EXR 300W and EZE 150W as instances, run at 3350K -- Nicholas O. Lindan Cleveland Engineering Design, LLC Cleveland, Ohio 44121
--- Richard Knoppow Los Angeles, CA, USAdickburk@xxxxxxxxxxxxx
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