Quote:
|
Originally Posted by Marvin Mattelson
RaNae, with all due respect for your professional acumen, there are many sources of information that refute your contention concerning that the CRI of incandescent bulbs is 100. I don't make up numbers or information. Many "experts" in any number of fields disagree with each other. It may be your opinion that I am incorrect. You offer far from conclusive evidence to satisfy me.
You quoted the soltex website. They have an agenda of proving their lights are superior to fluorescents and so they have listed data that serves their end. In the printing industry where color is extremely critical, color corrected bulbs are utilized. If you've tried the soltex bulbs, you would know that they are expensive, due to the cost of the fixtures. They are harsh and not soft. They generate far more heat than fluorescents.
In my experience most museums and galleries light their paintings poorly. They use warm bulbs to try to punch up the color. It is virtually impossible to see real color nuances. In the American Wing at the Met there is a gallery where the paintings are lit by skylight and augmented by halogens. Again in my opinion the color during mid day is far superior to the paintings in the museum's other galleries.
In terms of your contention that the CRI of incandescent bulbs is 100 I would site the CRI listings on the following link: http://www.gaiam.com/retail/gai_cont...article_id=583
I don't see 100 CRI listed anywhere. Are they also incorrect?
What about this page: http://www.survivalunlimited.com/lite bulbs.htm These people are also lighting professionals aren't they? At the bottom of this page is box containing the following statement: Standard incandescent bulbs have a 40 CRI.
Personally I don't really care about scientific hairsplitting. I go for what works for me.
The bottom line for me is color perception as it relates to painting portraits. In the case of incandescent lights, it is very difficult for me to perceive subtlety in skin tones. All colors look out of whack. In terms of my being able to differentiate color nuances, when compared to incandescents my Lumichrome bulbs are like the difference between light and day. |
Marvin,
Incandescent is the BASE LINE for CRI comparison in the warm range of 2700-3400K in the industry. The reason it is not listed in most literature is due to the fact that CRI relates to gas filled phosphorous light sources. Regardless of what you have read, in promotional literature, it is clear that you don't understand the science behind lighting, and the manufacturing process. If you like the fluorescents, have a ball. I prefer Halogen. Referring to the light s "yours" and defending its sales claims, as your own, to me seems quite odd.
I really don't know what to say, so I won't say anything more.