Hi Everybody,
It has appeared to me for a very long time that the CMYK colors chosen from the CMYK color docker do not display correctly in either DRAW or Photopaint.I have no idea why this is happening.
Here are five hues (tints, whatever) for equal value for magenta and yellow. Those values have nothing to do with the eyedropper tool. They are the entries in the CMYK color docker. The hue starts out as red. Then almost immediately shifts to orange. Then to orange-yellow. That does not happen if you vary the transparency of the (0, 100, 100, 0) layer. In that case, the hue remains constant as the lightness varies.
I have simply ducked this problem by using RGB. The hue remains constant in RGB as the values are changed proportionatately
Just out of curiosity, has anyone else noticed this behavior. Could it possibly be "normal".
Here's CMYK:Here's RGB:Phil
HI Phil
it is not your imagination it is the way cmyk works
As you know the cmyk color space is based on printing inks those inks are in fact transparent do you see anything transparent in your cmyk objects, no because they are displayed as though opaque on white the hue change is because 0 black is 100% white you are changing the colors m and y in relation to 100% white
this shows the difference between applying transparency and mixing percentages of colour both print the same but the display properties are different due to an alpha channel being used for transparency
The eyedropper sees both as the same value.
Ross Blair
Phil1923 said:They have recently switched to ink jet printers. Do I have to change how I retouch photos to accommodate ink jet printers.
Yes! I would not expect that the support from your provider will not be very good. While almost all ink jet devices honor embedded profiles for images many use an assumed color spaces work flow for PDF files. This is done to support PDF files from applications like InDesign and CorelDraw that utilize multiple color spaces in their output streams.
First your Samsung display is not very good, you may not be able to actually get it calibrated, if you can calibrate it or if you replace it with one that can be calibrated, light your work environment well. Since you work sRGB look for 6500 kelvin lighting, simply edit to the display, you'll get on images an output very much like your display since most likely the newer ink jets can exceed sRGB gamut.
Spot colors will be dubious, as will some if not most CMYK this is because most of these device are made outside the U.S. and do not always use North American Standard profiles, Canon many times uses ECI, 3M many times uses Japanese profiles, Fiery Rips tend to be set up more regionally , do not expect the operator to know.
Hi Milisock,
Get lost.
Stalking is a crime.
Phil
MikeWe said:But you can get reasonable color display using known good images made for gamma correction, et al.
With some displays that's a good as it gets.
MikeWe said:Let me go back to the opening post. I wrote I think your display is hot. Did that too offend and you were being polite in not responding to it? Were you ignoring it because you don't believe what I wrote? Just curious.
Mike some people don't really want to learn what they want is their conclusions reinforced.
The good thing about this forum is that every amateurish color management mistake that can be made is demonstrated here. So there is a serous training potential on this as well as all the other forums.
The good part is that on all the forums together less then 1 100th of 1 percent of the posts are color management based. It's a testament to not only a well thought out process but one that is similar to what all other users or other applications see. For example a CorelDRAW user with rudimentary understanding of color management can download Photoline and get coordinated quickly.