Which is brighter 5500K or 7300K?

[sharkeeper]

?

 

[her209]

Ken Jennings.

 

[KLin]

I hope you all get banned :thumbsdown:

 

[Zim Hosein]

Which is brighter 5500K or 7300K?

7300K

 

[ProviaFan]

Originally posted by: Kvaerner Masa
?

Both are much brigher than the average member of ATOT, but I digress...

On computer monitors, 5500K is supposedly for prepress, 6500K is for digital photo editing, and 9300K or thereabouts is for if you don't give a crap about color management (actually, the presets on your monitor aren't right anyway, so you should use a calibration system to accurately set the color temp to whatever you'd like to work at).

For lighting in general, I would suspect that given the same "amount" of light from each source, that the bluer of the two (7300K) would appear to be brighter, but it's been a while since I read about any color theory, so take this with a few grains of salt.

 

[myusername]

In the traditional sense of a heated black body, a body of a fixed mass would emit more photons at 7300K than at 5500K

 

[sharkeeper]

Well it depends on what you're looking at.

For most applications, 5500K will provide a brighter "feel" as it is a warmer output. 7300K can look better but it really depends on how these readings are taken and the overall spectral distribution of the Planckian black body radiator line in the range of 0.30 to 0.33 on the x coordinate on the CIE-1931 Chromaticity Diagram.

Oops! I did it again!

 

[myusername]

However, WRT CIE chromaticity coordinates, 5500K has the highest luminance value.

 

[myusername]

damn you , couldn't you have waited?

er. wrong button again.

 

[Eli]

Huh..

Is this assuming the same power from each light source or something?

It wouldn't be very hard to have a 5500K source that is brighter than a 7300K source, or vice versa.

I've never even heard of color temperature in relation to computer monitors. Isn't the color temperature of the monitor going to.... depend on what color it's displaying?

 

[ProviaFan]

Originally posted by: Eli
I've never even heard of color temperature in relation to computer monitors. Isn't the color temperature of the monitor going to.... depend on what color it's displaying?

I deal with this because I need to in relation to monitor calibration for photo editing. The physics and theory is my weak point. However, monitors do have color temperature control, though it's more of a toy to set your preferred "white balance." When my CRT is set at "6500K" it's actually displaying something in the lower 7000's; to set it properly, I attach a Gretag Macbeth Eye One Display 2 and fiddle with the individual R, G, and B controls until the color temperature indicator approaches the proper position.

 

[myusername]

It refers to the base "white" color that the monitor is driven to, but it's not terribly accurate unless you use a spectrophotometer for color management.

late again.