Author Topic: Optimal light 'temperature' for ink mixing/proofing area?  (Read 1858 times)

Offline jvanick

  • !!!
  • Gonzo Member
  • ******
  • Posts: 2477
Optimal light 'temperature' for ink mixing/proofing area?
« on: April 28, 2016, 09:31:55 AM »
we generally do our eye matches outside in the sun as the flourescent lights in the shop can throw the colors off.

I'm getting ready to upgrade our ink mixing area and was thinking of adding an additional fixture over the ink table...  Suggestions on what 'color' tubes to use?

I see a whole bunch of stuff from 'daylight' to 5000K to 6500K to 7500K and everywhere in between.

I know that the right answer is a 'pantone' light box, but we're certainly not doing any matching that where near advanced.

so.. suggestions?  Maybe an LED option???


Offline jsheridan

  • !!!
  • Gonzo Member
  • ******
  • Posts: 2130
Re: Optimal light 'temperature' for ink mixing/proofing area?
« Reply #1 on: April 28, 2016, 10:03:08 AM »
grab your pantone book.. in the front or back is a dedicated page to test your light booth, it's a big block and when the light is right, you can't see a color difference.

I want to say 5500 is the light wave to use.
Blacktop Graphics Screenprinting and Consulting Services

Offline jvanick

  • !!!
  • Gonzo Member
  • ******
  • Posts: 2477
Re: Optimal light 'temperature' for ink mixing/proofing area?
« Reply #2 on: April 28, 2016, 10:10:44 AM »
sweet... just found that it even says it in there.. duh.

for future reference, looks like 5000K is the right 'color' temperature

Offline im_mcguire

  • !!!
  • Hero Member
  • *****
  • Posts: 716
Re: Optimal light 'temperature' for ink mixing/proofing area?
« Reply #3 on: April 28, 2016, 10:17:42 AM »
We just installed new lighting in my print area.  5000K bulbs everywhere.  They are great.  Go that route, you wont be disapointed...

Offline tonypep

  • Ludicrous Speed Member
  • *******
  • Posts: 5681
Re: Optimal light 'temperature' for ink mixing/proofing area?
« Reply #4 on: April 28, 2016, 10:37:34 AM »
Pantone sells/sold color matching booths. Neutral gray with at least three light sources to choose from or combine.

Offline mimosatexas

  • !!!
  • Gonzo Member
  • ******
  • Posts: 4221
  • contributor
Re: Optimal light 'temperature' for ink mixing/proofing area?
« Reply #5 on: April 28, 2016, 11:16:51 AM »
Others have pretty much covered the bases, 5000k and a light gray (18% gray) flat painted walls/surfaces is ideal.  I always actually take the ink outside as well as looking at a smear in the mixing area because sometimes it can look freaking weird in one or the other even when the color is "correct" and I will adjust accordingly.

Offline ScreenFoo

  • Gonzo Member
  • ******
  • Posts: 1296
  • Semper Fidelis Tyrannosaurus
Re: Optimal light 'temperature' for ink mixing/proofing area?
« Reply #6 on: April 28, 2016, 11:19:01 AM »
FWIW, the color temp is not necessarily that good of an indicator of the accuracy of a light source.
If I'm not mistaken, a CRI of 90+ is more what you want to look for.

Google CRI vs. temperature for more info.

Offline blue moon

  • Administrator
  • Ludicrous Speed Member
  • *****
  • Posts: 6366
Re: Optimal light 'temperature' for ink mixing/proofing area?
« Reply #7 on: April 28, 2016, 02:12:40 PM »
and fluorescent bulbs fade, find LEDs (which will degrade with heat, so keep them cool).

pierre
Yes, we've won our share of awards, and yes, I've tested stuff and read the scientific papers, but ultimately take everything I say with more than just a grain of salt! So if you are looking for trouble, just do as I say or even better, do something I said years ago!