Re: Epson 10000XL scanner and i1 profiler
Re: Epson 10000XL scanner and i1 profiler
- Subject: Re: Epson 10000XL scanner and i1 profiler
- From: MARK SEGAL <email@hidden>
- Date: Thu, 28 Aug 2014 18:58:03 -0700
OK, In SilverFast Ai if both histograms in 48 bit mode are showing highlight clipping in the scan preview, next thing is to set gamma to 1.0 in Preferences, and if the highlights are still clipped, try taming them with the histogram tool (the one you open from the top ribbon) by putting its viewing mode in the "all channels" view and work the highlight adjustments for each channel (the vertical lines) by pulling them gently to the right preserving colour balance by the time you finish with all three. I would expect these procedures to solve the problem, provided the reflectance of the media is not so bright that it overwhelms the scanner.
Mark
________________________________
From: Peter Miles <email@hidden>
To: 'colorsync-users?lists.apple.com' List <email@hidden>
Sent: Thursday, August 28, 2014 9:06:23 PM
Subject: Re: Epson 10000XL scanner and i1 profiler
MARK SEGAL wrote:
> The question I would have for Peter is whether in HDR Mode the output histogram in the SilverFast Picture Settings dialog shows highlight clipping.
Tried Silverfast in "48 bit HDR Color" mode. However the histogram icon is grayed out and not available for view. So I scanning a section of the paper with in "48 bit HDR Color" (silverfastAi 6.2 ). The scan shows clipping in all three channels in the brighter parts of the paper texture of the paper texture.
Note: SilverfastAi 6.2 in "48 bit HDR Color" and EpsonScan in "no color adjustment" are giving the what appears to me to be identical results as far as clipped highlights are concerned.
> It may be an idea to not use "no adjustment" mode. Use the regular 48 bit mode but if you don't want adjustments don't make any, and set Gamma to 1.0 in Preferences. Then you can trigger the Histogram tool and see what the luminosity of the image looks like in the highlight area.
Thanks for the suggestion. in "48 bit color" with silverfast, the INPUT histogram on which I get to move the white/black and midpoint sliders shows clipping in whites. The OUTPUT histogram in silverfast also shows clipping too.
Thanks for your help
Regards
Peter Miles
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden