Re: Watch that white balance, folks!
Godfrey DiGiorgi wrote: What's white balance? Better called white point. I disagree, that confuses the nomenclature. White point and black point, in the context of image processing and adjustment, are the limits at which you place the exposure values beyond which values are saturated and zeroed, respectively. White balance is where you place the white color temperature. White point is the white color temperature setting in the context of a monitor calibration and color space profile. The use of this expression is pretty specific. Godfrey Precisely stated and correct. The words we put together in a descriptive phrase ARE important, technically speaking. Thanks for clarifying that distinction, Godfrey... keith whaley -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
You're absolutely correct Godfrey. In the context of Mark's comment, I incorrectly referred to white balance (he talked about brightning an image using levels). Answering Frank's querry, I realized I had mis stated proceeded to give the background to what I meant, but had incorrectly named. Kenneth Waller http://www.tinyurl.com/272u2f - Original Message - From: Godfrey DiGiorgi [EMAIL PROTECTED] Subject: Re: Watch that white balance, folks! What's white balance? Better called white point. I disagree, that confuses the nomenclature. White point and black point, in the context of image processing and adjustment, are the limits at which you place the exposure values beyond which values are saturated and zeroed, respectively. White balance is where you place the white color temperature. White point is the white color temperature setting in the context of a monitor calibration and color space profile. The use of this expression is pretty specific. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: Watch that white balance, folks!
It is interesting that I gave similar advice to an image for CC poster in the Pentax List on DPReview. This got me an immediate strong admonishment from another person who apparently liked the flat image and who told me that this may well have been the artistic intent of the OP and that the advice I gave was poor. You can't win in being honest and constructive with some people :)) Rod -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ken Waller What's white balance? Better called white point. I was referring to looking @ the image's histogram in levels ensuring the whitest white in the image was @ the far RH portion of the histogram without blowing out the details (clipping) also ensuring the blackest black (shadow detail) in the image was @ the far LH portion. In levels, holding the alt/option key gives you a clipping preview as you adjust the white point slider. Using the alt/option key, while adjusting the black point slider shows you where you're losing shadow detail in the image. HTH Kenneth Waller http://www.tinyurl.com/272u2f -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
Maybe that's why I don't like submitting and voting on Pentax Gallery. I discovered www.onexposure.net On Dec 20, 2007 7:12 PM, Mark Roberts [EMAIL PROTECTED] wrote: I was just doing some peer judging in the Pentax Gallery, getting a bit depressed over the stuff that had been submitted, when I came upon one rather dismal image that made me think, I wonder what would happen if I tweaked this in Photoshop? All that was really wrong with it was that the white balance was waaay off. Well, a with the eyedropper gray point tool and my reaction was WOW! One single click - literally - would have taken this shot from instant reject to eye-popping stunner. I realize that whoever submitted the photo may have little experience, heck, might not even own Photoshop or any other image editor, but I trust some of the people reading this who submit to the Gallery do. I've seen dozens of shots submitted that could have been utterly transformed with a simple curves adjustment or other simple tweak, it's amazing. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Toine http://www.repiuk.nl -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
On Dec 22, 2007 1:55 PM, Toine [EMAIL PROTECTED] wrote: Maybe that's why I don't like submitting and voting on Pentax Gallery. I just had another rejected. I guess i'll stay content with the four already accepted.:-) Dave I discovered www.onexposure.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Toine http://www.repiuk.nl -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Equine Photography www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
What's white balance? Better called white point. I disagree, that confuses the nomenclature. White point and black point, in the context of image processing and adjustment, are the limits at which you place the exposure values beyond which values are saturated and zeroed, respectively. White balance is where you place the white color temperature. White point is the white color temperature setting in the context of a monitor calibration and color space profile. The use of this expression is pretty specific. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
On Dec 20, 2007 10:27 PM, Ken Waller [EMAIL PROTECTED] wrote: White balance is such a basic part of a digital workflow, it makes me think the the originator of the image must be a newby. What's white balance? cheers, frank (who's so glad he converts most images to BW) ;-) -- Sharpness is a bourgeois concept. -Henri Cartier-Bresson -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
Ken Waller wrote: White balance is such a basic part of a digital workflow, it makes me think the the originator of the image must be a newby. Very likely. It also looked to me as if the photo had been shot as a JPEG (probably on automatic white balance), and to many JPEG shooters, white balance *isn't* a basic part of their digital workflow. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
On Fri, 21 Dec 2007, Mark Roberts wrote: Ken Waller wrote: White balance is such a basic part of a digital workflow, it makes me think the the originator of the image must be a newby. Very likely. It also looked to me as if the photo had been shot as a JPEG (probably on automatic white balance), and to many JPEG shooters, white balance *isn't* a basic part of their digital workflow. ... and if you shoot JPEG, it really *has* to be. That's one of the main reasons I shoot RAW for pretty much everything. -Cory -- * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering* * Virginia Polytechnic Institute and State University * * -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
What's white balance? Better called white point. I was referring to looking @ the image's histogram in levels ensuring the whitest white in the image was @ the far RH portion of the histogram without blowing out the details (clipping) also ensuring the blackest black (shadow detail) in the image was @ the far LH portion. In levels, holding the alt/option key gives you a clipping preview as you adjust the white point slider. Using the alt/option key, while adjusting the black point slider shows you where you're losing shadow detail in the image. HTH Kenneth Waller http://www.tinyurl.com/272u2f - Original Message - From: frank theriault [EMAIL PROTECTED] Subject: Re: Watch that white balance, folks! On Dec 20, 2007 10:27 PM, Ken Waller [EMAIL PROTECTED] wrote: White balance is such a basic part of a digital workflow, it makes me think the the originator of the image must be a newby. What's white balance? cheers, frank (who's so glad he converts most images to BW) ;-) -- Sharpness is a bourgeois concept. -Henri Cartier-Bresson -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
Mark Roberts wrote: I was just doing some peer judging in the Pentax Gallery, getting a bit depressed over the stuff that had been submitted, when I came upon one rather dismal image that made me think, I wonder what would happen if I tweaked this in Photoshop? All that was really wrong with it was that the white balance was waaay off. Well, a with the eyedropper gray point tool and my reaction was WOW! One single click - literally - would have taken this shot from instant reject to eye-popping stunner. I realize that whoever submitted the photo may have little experience, heck, might not even own Photoshop or any other image editor, but I trust some of the people reading this who submit to the Gallery do. I've seen dozens of shots submitted that could have been utterly transformed with a simple curves adjustment or other simple tweak, it's amazing. How valuable that advice would be to the submitter. It's really too bad that the judging/submitting is anonymous. You, as a judge, should really have the option of telling the submitter why you did or did not vote for the photo. In the long run that sort of thing might even improve Pentax's gallery as a whole. -- Scott Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
Was it my head stone shot. I have noticed it looks way different on my laptop, which processed it, and my PC which is calibrated and set at 6500. Dave On Dec 20, 2007 1:21 PM, Scott Loveless [EMAIL PROTECTED] wrote: Mark Roberts wrote: I was just doing some peer judging in the Pentax Gallery, getting a bit depressed over the stuff that had been submitted, when I came upon one rather dismal image that made me think, I wonder what would happen if I tweaked this in Photoshop? All that was really wrong with it was that the white balance was waaay off. Well, a with the eyedropper gray point tool and my reaction was WOW! One single click - literally - would have taken this shot from instant reject to eye-popping stunner. I realize that whoever submitted the photo may have little experience, heck, might not even own Photoshop or any other image editor, but I trust some of the people reading this who submit to the Gallery do. I've seen dozens of shots submitted that could have been utterly transformed with a simple curves adjustment or other simple tweak, it's amazing. How valuable that advice would be to the submitter. It's really too bad that the judging/submitting is anonymous. You, as a judge, should really have the option of telling the submitter why you did or did not vote for the photo. In the long run that sort of thing might even improve Pentax's gallery as a whole. -- Scott Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Equine Photography www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
Scott Loveless wrote: How valuable that advice would be to the submitter. It's really too bad that the judging/submitting is anonymous. You, as a judge, should really have the option of telling the submitter why you did or did not vote for the photo. In the long run that sort of thing might even improve Pentax's gallery as a whole. Oh yeah. And you wouldn't necessarily have to compromist the anonymity of either the judge or the photographer to do comments. I can think of other things that would be really valuable. How about the number of yea and nay votes? That would be interesting, though probably not helpful. Of course, when I think about what it would involve to actually *impliment* any of this stuff I just shudder and think better them than me! -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Watch that white balance, folks!
White balance is such a basic part of a digital workflow, it makes me think the the originator of the image must be a newby. Kenneth Waller http://www.tinyurl.com/272u2f - Original Message - From: Mark Roberts [EMAIL PROTECTED] Subject: Watch that white balance, folks! I was just doing some peer judging in the Pentax Gallery, getting a bit depressed over the stuff that had been submitted, when I came upon one rather dismal image that made me think, I wonder what would happen if I tweaked this in Photoshop? All that was really wrong with it was that the white balance was waaay off. Well, a with the eyedropper gray point tool and my reaction was WOW! One single click - literally - would have taken this shot from instant reject to eye-popping stunner. I realize that whoever submitted the photo may have little experience, heck, might not even own Photoshop or any other image editor, but I trust some of the people reading this who submit to the Gallery do. I've seen dozens of shots submitted that could have been utterly transformed with a simple curves adjustment or other simple tweak, it's amazing. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
