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2006-06-13 by aromanocpa@optonline.net
Is it true that when you convert an RGB digital file to greyscale that photo shop has set curves that it uses thereby any previous RGB channel adjustments that you make prior to conversion get obliderated? If this is true why convert before printing? Please help Art
2006-06-13 by Eric Neilsen Photo
???????????? Where did you hear that? Are you talking about a saved curve setting? Last used setting? If you don't convert to grayscale you will be letting the driver, Epson or RIP determine your values. Is that what you want? Eric Neilsen Photography 4101 Commerce Street, Suite 9 Dallas, TX 75226 214-827-8301 http://ericneilsenphotography.com Skype : ejprinter _____
From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of aromanocpa@... Sent: Tuesday, June 13, 2006 12:29 PM To: DigitalBlackandWhiteThePrint@yahoogroups.com Subject: [Digital BW] Grey scale conversion in workflow Is it true that when you convert an RGB digital file to greyscale that photo shop has set curves that it uses thereby any previous RGB channel adjustments that you make prior to conversion get obliderated? If this is true why convert before printing? Please help Art [Non-text portions of this message have been removed]
2006-06-14 by benasaj
--- In DigitalBlackandWhiteThePrint@yahoogroups.com, aromanocpa@... wrote: > > Is it true that when you convert an RGB digital file to greyscale that photo shop has set curves that it uses thereby any previous RGB channel adjustments that you make prior to conversion get obliderated? > > If this is true why convert before printing? > > Please help > > Art > You implied that you used channel mixer for your color-to-B&W conversion? Converting the completed rgb image to grayscale does NOT visually effect or change the image. Al Benas
2006-06-18 by aromanocpa@optonline.net
Eric Hi, I am reading a book on black and white photoshop and it says that if you to your color RGB file and just converted it to grayscale it would have preset values that photoshop assumes most people would like to see the photo print at. If this is so, than what stops it at the later conversion step if you do some of the channel mixing first? Art
----- Original Message ----- From: Eric Neilsen Photo <e.neilsen2@...> Date: Tuesday, June 13, 2006 3:34 pm Subject: RE: [Digital BW] Grey scale conversion in workflow > ???????????? > > Where did you hear that? Are you talking about a saved curve > setting? Last > used setting? If you don't convert to grayscale you will be > letting the > driver, Epson or RIP determine your values. Is that what you want? > > > > > > Eric Neilsen Photography > > 4101 Commerce Street, Suite 9 > > Dallas, TX 75226 > > 214-827-8301 > > http://ericneilsenphotography.com > > > > Skype : ejprinter > > _____ > > From: DigitalBlackandWhiteThePrint@yahoogroups.com > [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of > aromanocpa@... > Sent: Tuesday, June 13, 2006 12:29 PM > To: DigitalBlackandWhiteThePrint@yahoogroups.com > Subject: [Digital BW] Grey scale conversion in workflow > > > > Is it true that when you convert an RGB digital file to greyscale > that photo > shop has set curves that it uses thereby any previous RGB channel > adjustments that you make prior to conversion get obliderated? > > If this is true why convert before printing? > > Please help > > Art > > > > > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed]
2006-06-18 by aromanocpa@optonline.net
how do you know that for sure? Have you read this anywhere? I am not being a wise guy. I just read that photoshop had a preset conversion palet when you use the conversion. Art
----- Original Message ----- From: benasaj <al.benas@...> Date: Tuesday, June 13, 2006 11:58 pm Subject: [Digital BW] Re: Grey scale conversion in workflow > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, > aromanocpa@... > wrote: > > > > Is it true that when you convert an RGB digital file to > greyscale > that photo shop has set curves that it uses thereby any previous > RGB > channel adjustments that you make prior to conversion get > obliderated? > > > > If this is true why convert before printing? > > > > Please help > > > > Art > > > > You implied that you used channel mixer for your color-to-B&W > conversion? Converting the completed rgb image to grayscale does > NOT > visually effect or change the image. > > Al Benas > > > > > [Non-text portions of this message have been removed]
2006-06-18 by Clayton Jones
Hello Art, >how do you know that for sure? Have you read this anywhere? I am >not being a wise guy. I just read that photoshop had a preset >conversion palet when you use the conversion. These are good questions but you don't need to ask someone else for the answers. Take 3 minutes and do a test and find out first hand. Open a color image, convert to mode->grayscale, and save it to a new filename. Then reopen the color image, go to channel mixer, monochrome + twiddle some settings, then convert to mode->grayscale (you'll see whether or not it changes your settings) and save it to another new filename. Then compare the two BW versions and you'll have your answer. Regards, Clayton Info on black and white digital printing at http://www.cjcom.net/digiprnarts.htm
2006-06-18 by Eric Neilsen
An alternative to that is to open an RGB image, convert to grayscale and take a snap shot. Undo the conversion and you will notice that your snap shot is still there. Now do your conversion using channel mixer and convert to grayscale. Take a snap shot. You can click on the state of each snap shot either save to file if you prefer one to the other or paint with a history brush to correct the interpretation of a particular colored area or contrast range that you created within that conversion. You have all the conversions on the same document and if you like any one or all for later, save each one. The changes that you make to the file using channel mixer will stay and be processed by the conversion setting. If you desaturate a scene, it will look different when converted to grayscale as well. I think you may be confused as to what is happening along the end path to grayscale. Look at it like this, once you take an exposure with traditional B&W film using a colored filter you cannot undo the effect through processing; i.e. a red filer to darken a sky. Eric Neilsen Photography 4101 Commerce Street Suite 9 Dallas, TX 75226 http://e.neilsen.home.att.net http://ericneilsenphotography.com _____
From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Clayton Jones Sent: Sunday, June 18, 2006 2:28 PM To: DigitalBlackandWhiteThePrint@yahoogroups.com Subject: [Digital BW] Re: Grey scale conversion in workflow Hello Art, >how do you know that for sure? Have you read this anywhere? I am >not being a wise guy. I just read that photoshop had a preset >conversion palet when you use the conversion. These are good questions but you don't need to ask someone else for the answers. Take 3 minutes and do a test and find out first hand. Open a color image, convert to mode->grayscale, and save it to a new filename. Then reopen the color image, go to channel mixer, monochrome + twiddle some settings, then convert to mode->grayscale (you'll see whether or not it changes your settings) and save it to another new filename. Then compare the two BW versions and you'll have your answer. Regards, Clayton Info on black and white digital printing at http://www.cjcom. <http://www.cjcom.net/digiprnarts.htm> net/digiprnarts.htm [Non-text portions of this message have been removed]
2006-06-19 by aromanocpa@optonline.net
thank you I will do that
----- Original Message ----- From: Clayton Jones <cj@...> Date: Sunday, June 18, 2006 3:28 pm Subject: [Digital BW] Re: Grey scale conversion in workflow > Hello Art, > > >how do you know that for sure? Have you read this anywhere? I am > >not being a wise guy. I just read that photoshop had a preset > >conversion palet when you use the conversion. > > These are good questions but you don't need to ask someone else for > the answers. Take 3 minutes and do a test and find out first > hand. > Open a color image, convert to mode->grayscale, and save it to a new > filename. > > Then reopen the color image, go to channel mixer, monochrome + twiddle > some settings, then convert to mode->grayscale (you'll see whether or > not it changes your settings) and save it to another new filename. > Then compare the two BW versions and you'll have your > answer. > > > Regards, > Clayton > > > Info on black and white digital printing at > http://www.cjcom.net/digiprnarts.htm > > > > [Non-text portions of this message have been removed]