Re: Solux Bulb color temperature
Re: Solux Bulb color temperature
- Subject: Re: Solux Bulb color temperature
- From: Andrew Rodney <email@hidden>
- Date: Tue, 17 Feb 2009 08:40:09 -0700
On Feb 17, 2009, at 8:25 AM, Fleisher, Ken wrote:
Both bulbs are
Solux, both are labeled D50, and both are essentially the same light
source.
They are, where? Because someone at Solux needs to fix that.
But one is closer to 5000K than the other
5000K being what color? You see the point of confusion here?
Why wouldn't that exact
bulb be preferred over the 4700K bulb in terms of ISO conformance
when the
5000K bulb 1) has a spectrum closer to D50, 2) has a color temperature
closer to 5000K, 3) has a slightly better CRI, 4) has a slightly
better MI,
and 5) has a slightly smaller chromaticity error as compared to the
4700K
bulb?
We can't get closer to a color until you tell us what color you want
to get closer to. Considering that 5000K is a pile of colors, you're
not helping us or yourself make a decision.
Now if you asked which is closer to D50, at least we'd have a non
ambiguous target color to compare to.
Or, just pick the "5000K" bulbs because the name is closer to the
color we don't know that you wish to match.
And even Solux needs to remove the silly CRI index which isn't really
helpful unless again, you want some ambiguous spec, generally useful
for selling Fluorescent lights in making them sound closer to daylight
then they really are. Both a Solux 48 and a "full spectrum" tube from
home depot may have a CRI of 97. I can assure you the Home Depot bulb
has a giant mercury spike and some spectral dead spots.
Andrew Rodney
http://www.digitaldog.net/
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