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2014-03-29 by <homershannon@...>
2014-03-29 by Pete Bergstrom
Where can I get a pre-printed, high quality, 21-step grayscale for scanner calibration purposes? I have a Q-13 and a MacBeth chart, but neither of these gives me confidence that I am doing my calibration step correctly when using the QTR Stepwedge Tool script.I've looked all over the web and don't see this item listed anywhere. ;
2014-03-29 by Paul Roark
http://www.stouffer.net/index.htmlStouffer Graphic Arts made the 21 step wedge I've had for a long time. I'm pleased to see they're still in business.
PeteOn Sat, Mar 29, 2014 at 7:47 AM, <homershannon@...> wrote:
Where can I get a pre-printed, high quality, 21-step grayscale for scanner calibration purposes? I have a Q-13 and a MacBeth chart, but neither of these gives me confidence that I am doing my calibration step correctly when using the QTR Stepwedge Tool script.I've looked all over the web and don't see this item listed anywhere.
2014-03-29 by Mark Nelson
You can purchase a 21 reflection Steptablet (or film transmission Steptablet ) from Stouffer Industries. http://www.stouffer.net/ Mark Nelson www.PrecisionDigitalNegatives.com PDNPRint Forum @ Yahoo Groups www.MarkINelsonPhoto.com Curve Calculator III for the Mac Now Available !!! sent from my iPhonetypeDeviceThingy
> On Mar 29, 2014, at 7:47 AM, <homershannon@gmail.com> wrote: > > Where can I get a pre-printed, high quality, 21-step grayscale for scanner calibration purposes? I have a Q-13 and a MacBeth chart, but neither of these gives me confidence that I am doing my calibration step correctly when using the QTR Stepwedge Tool script. > > > I've looked all over the web and don't see this item listed anywhere. >
2014-03-31 by <paulmwhiting@...>
2014-03-31 by Le Globe Trotteur
They have 21 and 31 step tablets. Pierre-Olivier http://www.PierreOlivierTavernier.com
From: paulmwhiting@... Sent: Monday, March 31, 2014 12:00 PM To: DigitalBlackandWhiteThePrint@yahoogroups.com Subject: [Digital BW] Re: Black and White Calibration I have the Q-13 step by Kodak, but it only has 20 steps. When trying to linearize my QTrip curve, it requires entering values in 21 boxes... it was a little tricky trying to get a reading from 20 steps to fit into 21 boxes, even with interpolation. Does the Stouffer contain a full 21 steps? It was hard to tell from looking at the graphic on their website. Paul
2014-04-01 by <paulmwhiting@...>