07-14-2022, 04:25 PM
(07-14-2022, 03:33 PM)rich2005 Wrote:Thank you for the tests which are the proof in the pudding!!! The yellow of the girl's shirt in the CYAN and PHOTOSHOP conversion are very simiilar.Quote:"I do not know which is correct but the web is outnumbered 3:1"
What do you mean by this?
Well...if you look at the comparison images I made. https://i.imgur.com/71r76kD.jpg
The top one is the rgb2cmyk.org conversion
The next three are conversions using Cyan / Krita / PhotoShop These three largely match. So which is correct and which is wrong ? Consensus says the rgb2cmyk.org is wrong. But if you prefer the darker version, then yes, you will have to adjust your original image if you want to use Cyan.
The KRITA conversion comes 3rd because the the yellow shirt seems paler. As for the RGB2CMYK, it just looks "dead"!
To tell you the truth, I have already done one book in sepia photos using rgb2cmyk.org (because i didn't know where to turn to and because rgb2cmyk.org was the only free (well, not so free...) online software I could find.
I'll let you guess the amount of testing I have had to do with the printer to get rid of that "darkness" within the photos...
By experience with rgb2cmyk.org, I had to avoid putting "contrast" to my photos and also have them a little "light/over exposed" to get near enough what I wanted.
Anyway, the 3 Cyan / Krita / PhotoShop conversions images you sent me definitely prove their point to me! It's the only way to compare.
It's just that from now on, if I'm going to use CYAN I'm going to take a different RGB grading approach in order to get what I think it's right for me (as it's all subjective, really) in the CMYK conversion.
I just will have to practice for, as you know, working on your own computer screen is one thing but confronting it the RGB result with the printers own screen and printing machine is another...
The only thing I have left to do is to download that software to check whether my photos are indeed in CMYK. I hope it won't be too complex...
In any case, Thank you again for your patience and your technological knowledge. Brillant!