Well, you can convert the image from CMYK to RGB, then tell it to use the "not so black anymore" color as reference as black. In Photoshop you can use the Image -> Adjustments -> Levels. Select the black eyedropper tool and click on the "not so black area". The area will now be completely black. BUT - this will do changes to the levels of the
In the Photoshop (Edit in Windows) menu > Drag down to Color Settings >. The Color Setting Dialog box appears. 2. Click the Advanced Mode Option. Working Space Setting - RGB. Under Working Spaces: Unless you or some else changed this setting, sRGB will be chosen. This is not the setting you want for color printing.
The colour shift is probably not related to the bit depth (8 or 16), but more likely to the gamut of RGB vs CMYK.. As far as I'm aware, when Photoshop refers to 8-bit or 16-bit colour, it's talking about each channel, so 16 bits is plenty for individual colour channels in RGB, and won't be the cause of changing colours (if it was 8-bits shared between the three channels, probably using a
Go to Edit > Color Settings. Under Working Spaces, from the CMYK menu, choose U.S. Web Coated (SWOP) v2. Click OK. Now do the CMYK conversion by going into Image > Mode > CMYK Color. If you get a message about profiles, check Don’t show again and click OK. Click on the image on the right to make sure it’s active.
In addition, converting RGB to CMYK without knowing the lithographer’s print profile is risky business and is probably not giving you an accurate preview. I suggest you leave the conversion to the lithographer and request a proof (in the US it is often referred to as a Contract Proof). Base your decision and options on that.
When i click open with photoshop it automatically opens in RGB. When I click open with Preview (i'm on a mac) it appears as normal black stripes see first screenshot below. But when I open it in Photoshop (CMYK) the black stripes appear within grey stripes on each side, see screen shot 2 I have been told the barcode won't work that way
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convert cmyk to rgb photoshop
