Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-07-2016, 01:35 AM   #1
New Member




Join Date: Jul 2016
Location: Guangdong, China
Photos: Albums
Posts: 21
How does "Custom Color Temperature" on K-S2 work?

In general the lower K value is, the warmer the environment is. The same goes for the higher K value. (is it?)

However in the camera it works conversely: the photo gets warmer with lower K value.

How does it come about?

08-07-2016, 02:25 AM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 41,819
I no longer have a K-S2 to test with, but on the K-1 higher temp values are definitely warmer. A bug, perhaps?

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

08-07-2016, 04:03 AM   #3
Senior Member
aremmes's Avatar

Join Date: Oct 2013
Location: Philadelphia
Photos: Albums
Posts: 211
Lower K values correspond to a shift towards reds, while higher K values shift colors towards blue. This is because black bodies emit more short-wavelength light (i.e., more blue) at higher temperatures. The color data captured by the sensor is referenced to the color temperature to determine the balance across the spectrum.
08-07-2016, 05:34 AM   #4
New Member




Join Date: Jul 2016
Location: Guangdong, China
Photos: Albums
Posts: 21
Original Poster
QuoteOriginally posted by Adam Quote
I no longer have a K-S2 to test with, but on the K-1 higher temp values are definitely warmer. A bug, perhaps?
@Adam: That's exactly what I'm wondering. I thought a higher K value should match more cool color before putting out this topic because it works so on the monitor.
aremmes (under your reply) gives his answer.

QuoteOriginally posted by aremmes Quote
Lower K values correspond to a shift towards reds, while higher K values shift colors towards blue. This is because black bodies emit more short-wavelength light (i.e., more blue) at higher temperatures. The color data captured by the sensor is referenced to the color temperature to determine the balance across the spectrum.
@aremmes: So this function acts like color tone correction to adjust color deviation or to create a special effect? Seems I get something new

08-07-2016, 08:31 PM - 1 Like   #5
Senior Member
aremmes's Avatar

Join Date: Oct 2013
Location: Philadelphia
Photos: Albums
Posts: 211
QuoteOriginally posted by FanFanD Quote
@aremmes: So this function acts like color tone correction to adjust color deviation or to create a special effect? Seems I get something new
It does indeed help to correct for color deviation caused by differences in light sources. An ideal light source would emit light spread evenly over the visible light spectrum, but outside of the Sun most lights deviate from that in sometimes drastic ways, with the most obvious effect being that whites don't look quite as white as intended. The color temperature setting exists to help cope with that.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
k-s1, k-s2, value
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to "extend" eyecup on K-3? AntonioD Pentax Camera and Field Accessories 14 07-28-2015 08:29 PM
Exposure accuracy of "A" lenses on older film bodies ("K" series) Lititz Pentax SLR Lens Discussion 20 05-26-2015 01:59 AM
"Reversal Film" custom image preset in K-3 Nimble Pentax K-3 7 05-05-2015 04:54 PM
"Click" in between "C" and "MF" mode on focus selector? K-50 maxwolfie Pentax K-30 & K-50 3 01-29-2015 04:19 AM
K-30 "AWB in Tungsten Light" setting does not work TropicalMonkey Pentax K-30 & K-50 6 11-30-2012 01:36 AM



All times are GMT -7. The time now is 03:39 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top