Artificial lighting

Joan Breckwoldt · 07-13-2004, 10:40 PM

[QUOTE=Chris Kolupski]I use the Lumichrome tubes but need screw in bulbs for on location portrait studies. QUOTE]

Hi Chris,

Did you ever find anything satifsactory for a screw in bulb?

Thanks,

Joan

Michael Georges · 07-19-2004, 11:59 PM

I just put in my lights for the occasional evening painting session. I normally will paint with my north window as my light source, but I have learned that a bank of lights are good to have.

I mount mine above my window so my light comes from the same direction and height. I have 4 24 inch fluorescents in a bank.

The bulbs are Phillips Natural Sunshine bulbs - what I could find locally. They are 5000K and have a Color Rendering Index (CRI) of 92. This for me is optimal as the 6000 or 6500 bulbs are a bit too cool for my tastes, and I have a hard time recognizing any improvement once the CRI goes over 90 - my last lights had a CRI of 94 and these at 92 look just the same.

Joan Breckwoldt · 07-20-2004, 10:32 AM

Hi Michael,

Thank you for your information. I was hoping to avoid having some kind of set up which required the long tubes. It may come to that though, I'm not sure there is a screw in bulb (I mean the kind that screws into a normal light fixture) that will fit my needs. I do have a couple of screw-in bulbs that are flourescent and they help tremendously. Here in Houston we can get a week of overcast/rainy weather and it's tough to paint if I wait for sunlight!

Thank you again, I'll print out this info and add it to my other lighting info for when I do have to set up a 'bank' of light.

Joan

Chuck Yokota · 07-20-2004, 11:05 AM

I've been using GE Reveal screw-in bulbs. They are better than ordinary household bulbs for showing colors, and don't cost very much more. I don't know how they compare to the full-spectrum tubes.

Mike Dodson · 07-20-2004, 12:39 PM

Joan,

Although I use the 48" fluorescent tubes, I have also used these from Verilux and they work great :http://www.avitec.com/avihealthN.html

Joan Breckwoldt · 07-20-2004, 02:11 PM

Hi Mike,

Thank you for your reply. I have a bulb that looks like that but made my Commercial Electric, I got it at Home Depot. It's a flourescent. Do you know what Kelvin rating yours has?

Joan

Joan Breckwoldt · 07-20-2004, 02:15 PM

I just checked that website, say's that bulb is rated at 5500 Kelvin. Hmm, I think mine might be higher.

Okay, here's a question. Does all flourescent light put out the same temperature light? It seems like it would.

Joan

Michael Georges · 07-20-2004, 04:01 PM

Quote:

Originally Posted by Joan Breckwoldt

I just checked that website, say's that bulb is rated at 5500 Kelvin. Hmm, I think mine might be higher.

Okay, here's a question. Does all flourescent light put out the same temperature light? It seems like it would.

Joan

I don't believe so. Your standard commercial flourescent bulb is between 3000 and 4000 K with a CRI somewhere between 50 and 80. They are much more yellow-shifted.