Marcelo, Thank you for explaining the drivers. I have version 4.5.3 running Epson 9800. Where do I find the RGB driver for that? Thanks, Faro ________________________________ From: Marcelo Copetti <marcelo@easycolor.com.br> To: Randy Zaucha <zbet66@yahoo.com> Cc: faro mojahedi <faromojahedi@yahoo.com>; colorsync-users@lists.apple.com Sent: Friday, March 23, 2012 6:21 AM Subject: Re: EFI null Good morning To achieve better results you will need to go beyond the basics. If you want more, I suggest you read the entire e-mail and make more tests. In EFI ColorProof XF there are 3 kinds of driver. There are some printers that don't have all, but I will explain how they works: RGB (Basic level) Al data is sent from EFI to printer and printer uses it own library to make conversion from RGB to inks. The main application is to gie an easy way to handle color and fast ripping (EFI needs to calculate only 3 channels). You can't control: how black generation is made, how spot colors are printed, ink limit, etc. The idea is a solution to print like Photshop, Lightroom, etc. In this way you will have a better agreement between applications. CMYK Contone (Medium level) This mode lets you take more control and increase complexity. You need to linearize paper, ink limit, etc. The EFI has no control over spot colors (orange, green, blue, red, etc), transitions from light inks to regular inks. Then you will have a little control, but not all control. CMYK Halftone (Advanced level) This mode lets you take more control and increase complexity and needs more time to be made. You will need to be an advanced user to take decisions about all controls (ink limit, light ink transitions, halftone to use, spot colors, etc). EFI take full control over printer. Everything is calculated by EFI and this gives you more precision. All files will be slower in this mode. Because EFI needs to calculate everything (4, 6, 8, 9 channels, ink limit, linearization, etc). Marcelo Copetti marcelo@easycolor.com.br 41 9941-1740 Em 23/03/2012, às 02:22, Randy Zaucha escreveu:
We are using version 4.5.3. The RGB driver does not seem fully developed. It has not given a much larger gamut than the CT version. Not sure if it is working right.Randy ZauchaManaged Color --- On Wed, 3/21/12, faro mojahedi <faromojahedi@yahoo.com> wrote:
From: faro mojahedi <faromojahedi@yahoo.com> Subject: EFI null To: "zbet66@yahoo.com" <zbet66@yahoo.com> Date: Wednesday, March 21, 2012, 1:27 PM
Hi Randy, I have EFI4.5 as well. RGB display prints never look as good as through Adobe/OS-Mac driver.How do you access EFI RGB driver?Thanks,Faro Hi All,Thanks for the replies.First off, I was not able to get to the edge of the new printer's gamut with just the EFI RGB driver. Then I tried creating a media setting as a simulation of Adobe RGB which is what the client files are mostly in. The results were still not as wide a gamut as printing through a postscript driver without a profile to an older dye ink printer. Then I set the simulation for a much larger gamut...Prophoto RGB. Add an Absolute rendering intent and the output gamut through the EFI Rip expanded past the gamut of a non-profiled printer. (except for cyans) Quite a surprise, but for packaging designers, the extra gamut is a real treat. Now they want a Gracol simulation for process colors, but also accurate Spot color simulation at the same time. Very demanding client, no? Randy Zaucha _______________________________________________ Do not post admin requests to the list. They will be ignored. Colorsync-users mailing list (Colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/marcelo%40easycolor....
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