Why pay more for HPS Bulbs?

old pothead

old pothead

Well-Known Member
The only difference i see is the CRI.The higher priced bulbs seem to have a higher CRI.OPH

What is Color Rendering Index (CRI)?
Color rendering describes how a light source makes the color of an object appear to human eyes and how well subtle variations in color shades are revealed. The Color Rendering Index (CRI) is a scale from 0 to 100 percent indicating how accurate a "given" light source is at rendering color when compared to a "reference" light source.
The higher the CRI, the better the color rendering ability. Light sources with a CRI of 85 to 90 are considered good at color rendering. Light sources with a CRI of 90 or higher are excellent at color rendering and should be used for tasks requiring the most accurate color discrimination.
It is important to note that CRI is independent of color temperature (see discussion of color temperature). Examples: A 2700K ("warm") color temperature incandescent light source has a CRI of 100. One 5000K ("daylight") color temperature fluorescent light source has a CRI of 75 and another with the same color temperature has a CRI of 90.
To further understand the physics of color rendering, we need to look at spectral power distribution.
 
ettubrutus

ettubrutus

Well-Known Member
old pothead said:
The only difference i see is the CRI.The higher priced bulbs seem to have a higher CRI.OPH

What is Color Rendering Index (CRI)?
Color rendering describes how a light source makes the color of an object appear to human eyes and how well subtle variations in color shades are revealed. The Color Rendering Index (CRI) is a scale from 0 to 100 percent indicating how accurate a "given" light source is at rendering color when compared to a "reference" light source.
The higher the CRI, the better the color rendering ability. Light sources with a CRI of 85 to 90 are considered good at color rendering. Light sources with a CRI of 90 or higher are excellent at color rendering and should be used for tasks requiring the most accurate color discrimination.
It is important to note that CRI is independent of color temperature (see discussion of color temperature). Examples: A 2700K ("warm") color temperature incandescent light source has a CRI of 100. One 5000K ("daylight") color temperature fluorescent light source has a CRI of 75 and another with the same color temperature has a CRI of 90.
To further understand the physics of color rendering, we need to look at spectral power distribution.
Click to expand...
Perfect! thanks for the answer :)
 
AeroKing

AeroKing

Well-Known Member
I can personally vouch for the expensive hortilux bulbs. I accidentally installed a spare cheap-ass hps bulb in one hood, and the hortilux in the one next to it. I'm sitting there going "what the fuck- why is 1/2 the canopy 3" taller than the other half?". That's when I noticed the different color and more brightness coming out of the hortilux bulb.
 
ettubrutus

ettubrutus

Well-Known Member
AeroKing said:
I can personally vouch for the expensive hortilux bulbs. I accidentally installed a spare cheap-ass hps bulb in one hood, and the hortilux in the one next to it. I'm sitting there going "what the fuck- why is 1/2 the canopy 3" taller than the other half?". That's when I noticed the different color and more brightness coming out of the hortilux bulb.
Click to expand...
It's funny you say that... besides initial lumen output I don't see a whole lot of difference betwen the sweet hortilux one and the inexpensive one... :)

Hortilux: http://www.eyehortilux.com/tb/superhps/EQS-N-52-78-66620.pdf

Sylvania: http://www.1000bulbs.com/images/PDF/sylvania-67533-specsheet.pdf

I mean, we're talking significant price difference here... :) I have heard enough to know that I'll probably buy another Hortilux, but I absolutely hate getting ripped off for being unintentionally ignorant... :)
 
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