On Tuesday 25 May 2004 18:21, Sam George wrote: > How about the Sylvania CFLs? Do you know where I could find a CRI > rating for them? Subjectively I've been impressed by their sunlight > like color compared to other CFLs and house hold incandescent bulbs, > but I don't have a way of testing them objectively. I don't remember > if I tried any Philips CLFs. I think I may have tried a Philips > capsule CFL. >
If you go to the manufactures web site they will sometimes publish the color temp and CRI of their bulbs. But mostly for their better bulbs. But it is becoming more common to publish this information. Most CFLs have a color temp of 2700K or 3400K and CRIs in the 60s. Not well suited to this use. These bulbs are generally too warm and do not have a smooth response curve with very bad spikes in the green range in particular. The green spike is because of the mercury in the bulb which resonates in the green range. The main difference between the D50 bulbs and these more ordinary CFLs is that they have eliminated the mercury. Because of this they need to warm up before they put out full light and they are more expensive. I found that I was MUCH happier after I switched to D50 bulbs and if I could pick up a lamp fixture that would work for the M-16 bulbs cheap I would definitely get some Solux bulbs. I use pigmented inks in my printer and these inks have more metamerism than do dye based inks. So the quality of my lighting is more critical than it would be for those who are using the more ordinarily dye inks. But I believe that this is important no matter what type of inks you use because you will never get your color management completely right if your lighting is not correct. -- Hal V. Engel
pgpixzJQdAZ0I.pgp
Description: signature
