Rendering Intent & BlackPoint by ColorPlaza

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ColorPlaza TV

12 жыл бұрын

Пікірлер: 35

@joaniethatcher9437 8 жыл бұрын

Some of the clearest and concise explanation on this subject I've heard. Thank you

@azufreazul 10 жыл бұрын

Excellent information! I knew that black point compensation gave similar results as a perceptual rendering intent but your video explains this in great detail. Thanks!

@perspectivex Жыл бұрын

This was very good, thanks.

@jebiiik 5 жыл бұрын

Love the content...clearly, simply, perfekt for amateurs and "pros"

@SotirisKD 3 жыл бұрын

Great presentation. Thank you very much!

@grahamh7041 4 жыл бұрын

great explanations - very helpful

@YetkinYazici 10 жыл бұрын

great content. thank you.

@rudhyfaria204 6 жыл бұрын

So nice demo about rendering intent & black point compensation, not easy to understand because the topic is not indeed easy, but very clear explanation, congrats ;-)

@ewanrush7097 7 жыл бұрын

very informative many thanks

@PabloCubarle 8 жыл бұрын

Thanks a lot for this! awesome! any idea where I can find that image you are using on the screen? Thanks Pablo

@BrianPex 4 жыл бұрын

Let me ask this: what do you normally use for your work OR does the intent vary depending on in/out of gamut colors? Thanks.

@ColorPlazaTV 4 жыл бұрын

@Brian: In most cases I use relative colorimetric with black point compensation. If I'm printing on a matte paper, with a smaller gamut, I sometimes change this to perceptual, especially when the print contains lots of saturated colors, color transitions within the same hue, or shadows.

@boandersen3871 9 жыл бұрын

I have a HP Photosmart 7510 printer, and I try to print a photo with lot of black. If I set the paper type to photo paper, I get some kind of blue/green in the dark area. If i choose normal paper, it gets better. (the paper is the same in the printer, just changing in the software). I have tried to set Photoshop Elements to handle the color management, but it seems like the printer driver do some thing with the colors based on paper type, even if I select that the color management should be handled by the system. Do you have some explanation for this? Is it bad drivers from HP? I am running Windows 8.1. Thank you for good and informative videos.

@pedroroberto6596 7 жыл бұрын

Congratulations, very good info. Can you provide a link to that test image or is build for yourself? Thanks

@geminisystems6843 7 жыл бұрын

Thanks Pedro, the images are copyright protected, so I cannot provide them without violating that license. But the color bars on it are not, so I have posted it here: www.colorplaza.nl/image/TestFileCP2sRGB.jpg

@pedroroberto6596 7 жыл бұрын

Thank you very much, I really was looking for the bars only.

@michaelb2211 3 жыл бұрын

Does it matter whether connected via display port or hdmi for Eizo screens to view these shades or gray (for on screen applications, so mostly native)?

@ColorPlazaTV 3 жыл бұрын

The digital port you use should have no effect on the color behavior of the display.

@bclaus0 7 жыл бұрын

What does converting to CMYK do? I've always learnt it to be necessary before printing anything.

@geminisystems6843 7 жыл бұрын

Hello Claus, CMYK conversion will be done in the final stage; either inside the printer driver or by the RIP handing the file. Doing CMYK separations yourself is only a good idea if you know exactly on which device and media it will be printed

@ColorPlazaTV 6 жыл бұрын

That is a great misconception: Almost all standard printer drivers use RGB, not CMYK. Some printers now use up to 12 colors, and driving those with CMYK usually means a smaller gamut. CMYK is device specific: it is only better if the RGB to CMYK conversion is done very specifically with the device, ink and media in mind. In all other cases, driving your printer with RGB will render better results.

@vishalpatil-fi2qt 6 жыл бұрын

Why can't we use absolute with black point compensation

@ColorPlazaTV 6 жыл бұрын

Because as the name implies, absolute means render the color as accurate as absolutely is possible. Changing the back would not be absolutely exact, but merely give more details in black than it should.

@dpuk0159 4 жыл бұрын

Hi. Now I understand clearly what Rendering Intent and Black Point Compensation are doing in Photoshop. Thank you. However, when Photoshop is converting profiles, either upon opening or upon printing an image with a larger colour space, is the conversion process scaling proportionally from the source to the target profile or does it simply remove (if going to a smaller colour space) the out of gamut values?

@ColorPlazaTV 4 жыл бұрын

DPUK 01 You decide what Photoshop does using your color preferences in photoshop. You always have the choice of preserving the embedded one, or convert to another. This convention will usually mean compressing or expanding the colors and should only be changed when you know that will benefit the use of the stored image, because you know how it will be used.

@dpuk0159 4 жыл бұрын

@@ColorPlazaTV Thanks for your clear answer. I will aim to preserve the embedded profile when opening in Photoshop unless I need to convert for some reason. Your mention of compression or expansion has answered my question.

@ColorPlazaTV 4 жыл бұрын

@@dpuk0159 I always like the analogy with maps; there are no best maps. Most of the times, a city map (sRGB) is better and sometimes a country map (Adobe RGB) is better, but rarely will you need a map of the galaxy (ProPhoto)

@oooMarcooo 6 жыл бұрын

05:30 when you say that you need absolute colorimetric to simulate news paper paper, that's exactly what do I need to do, could you explain me/us it a little better? Thank you!

@ColorPlazaTV 6 жыл бұрын

Absolute rendering intent in an ICC workflow, means that the measured color of the destination output profile (the newspaper paper) is taken into account: white is not white, as the newspaper paper is grey. All colors are affected by this to some extent, but lighter colors more so than saturated colors. So a perfect white on a taken picture will be converted to the newspaper color (grey), as the lightest color that can be made on that newspaper is the newspaper's own color.

@oooMarcooo 6 жыл бұрын

Ok, so that means that the color of the newspaper paper is defined by the white point inside the newspaper colorspace right? So when the absolute colorimetri ask if you want to simulate the paper he just translate the white point of the first color space to the second one? So if I need an optical sensation on the grey of the newspaper paper I only need to do an hard proof to the newspaper colorspace right? I don't need to do anything to da image? Thank you again!

@claudioabado6246 5 жыл бұрын

"Luminance" is not the same as "Lightness'". Luminance = Y = Candelas/meter square. Lightness = L* as in CIE Lab, reported by Photoshop.

@ColorPlazaTV 5 жыл бұрын

I'm well aware what L stands for. As I am sure you understand that explaining a theoretical 3D model requires terms people can relate to.

@tj12711 8 жыл бұрын

Informative videos, but the opening is always really awkward

@ColorPlazaTV 8 жыл бұрын

@tj12711. awkward in what way?

@marcusbunce3406 3 жыл бұрын

to What an idiot tj12711 I too get a little timid when giving public demonstrations , your info is fantastic ,, and very informative It was probably a bit technical for him,, and that’s all he had to comment on many thanks,,