Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-24-2019, 08:39 PM   #61
Pentaxian




Join Date: Oct 2011
Location: Savannah, GA
Posts: 5,312
QuoteOriginally posted by stevebrot Quote
My understanding is that CTE (Color Temperature Enhancement) is just a tweak to AWB with a bias towards the dominant color rather than correcting such as a color cast, such that the golden hour still looks golden and the blue hour still looks blue and rain forests still look verdant. One can accomplish much the same by setting WB to "daylight" or 5200K. In all cases the capture data in the RAW remains the same and all that changes are the WB data in the makernotes.

That being said, your point is well taken in that it is not unusual to get home from a "golden hour" session only to find that it looks more like the plain white hour when reviewing the images later.
That's what I'm getting at. I'm not trying to "accomplish" anything with it -- it is leaving a reminder for me that it *was* golden hour, or the light was cool that day or whatever. When I am processing it later and trying to figure out what will make it look best, a helpful starting point is knowing what the light was really like. (I may be processing this picture years after it was taken in some cases.) And you can just leave it on that setting all the time just like you would AWB. And if you want AWB, you just hit "auto" in LR (or equivalent for whatever processing program you use) and it does just as well as AWB would have (on average, you will end up with slightly different results, sometimes better, sometimes worse). You can even bake the "auto" into your default import settings so you never even see the CTE version unless you want. I think it is a cool feature -- I find it helpful, anyway.

08-24-2019, 08:44 PM - 1 Like   #62
Otis Memorial Pentaxian
Loyal Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 33,949
QuoteOriginally posted by psoo Quote
best way to get an accurate color rendition
It occurred to me over dinner that I should come back and address this desire specifically. "Accurate" white balance results in a gray card (if part of the subject) evaluating to equal amounts of red, green, and blue. Accurate as that might be, it is not always desirable nor does the "correction" of a color-deficient spectrum always result in a natural rendering. White balance is a blunt tool. That is why shooting RAW and mastering the color balance adjustments in the PP tool of one's choice are essential to getting the results you visualized in the field.


Steve
08-25-2019, 04:58 AM   #63
Site Supporter
Site Supporter




Join Date: Jan 2012
Location: Long Island, NY
Posts: 344
Original Poster
QuoteOriginally posted by stevebrot Quote
It occurred to me over dinner that I should come back and address this desire specifically. "Accurate" white balance results in a gray card (if part of the subject) evaluating to equal amounts of red, green, and blue. Accurate as that might be, it is not always desirable nor does the "correction" of a color-deficient spectrum always result in a natural rendering. White balance is a blunt tool. That is why shooting RAW and mastering the color balance adjustments in the PP tool of one's choice are essential to getting the results you visualized in the field.


Steve
Thanks Steve, well said. I often, use post-processing to enhance the image to my liking, even though the final image is not close to real life. However, I still don't like too much blue under any circumstance and try to remove it.
08-25-2019, 05:42 AM   #64
Pentaxian
photoptimist's Avatar

Join Date: Jul 2016
Photos: Albums
Posts: 3,539
QuoteOriginally posted by stevebrot Quote
It occurred to me over dinner that I should come back and address this desire specifically. "Accurate" white balance results in a gray card (if part of the subject) evaluating to equal amounts of red, green, and blue. Accurate as that might be, it is not always desirable nor does the "correction" of a color-deficient spectrum always result in a natural rendering. White balance is a blunt tool. That is why shooting RAW and mastering the color balance adjustments in the PP tool of one's choice are essential to getting the results you visualized in the field.


Steve
Great points!

And it is worth noting there are at least definitions of "accurate:"

1) RGB reflectance: The accurate surface colors of the subject if it was being lit by perfectly white light (not the scene's lighting).

2) RGB photon flux: The accurate light levels of the colors of the lighting on the subject.

3) Human vision: The most accurate rendition of the colors of subject as seen by a human eyes at that location (with human eye AWB).


Definition #1 is essential to fashion and product photography. Definition #2 is essential for science (photometry, spectrophotometry, astrophotography). Definition #3 is probably best for event photography.

(And of artistic purposes, none of these definitions of accuracy may be useful.)

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!
awb, balance, camera, color, condition, cte, dslr, image, light, photography, photos, post, rendition, sense, thanks, version
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
645Z AWB or Custom White Bal rollsman4 Pentax Medium Format 6 09-10-2016 04:37 AM
White Balance - AWB - Power on/off RockvilleBob Pentax K-3 4 11-25-2013 03:36 AM
K-x AWB better than K-5 AWB WerTicus Pentax DSLR Discussion 14 12-20-2010 02:31 PM
K20D 21fps burst mode with/without automatic white balance poney Pentax DSLR Discussion 0 06-07-2009 07:18 AM
Auto white balance vs. daylight balance outdoors. fevbusch Pentax DSLR Discussion 7 02-18-2007 03:04 PM



All times are GMT -7. The time now is 01:21 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