QUOTE (HasselBas @ Oct 13 2008, 12:13 AM)

However, I am up and running. The machine comes with a bundled small roll of paper, a 15 ft long “HP Everyday Pigment Ink Satin Photo Paper GE”. With this paper I started up the printer, calibrated it, and made my first profile. Piece of cake. After a successful first full colour print, nice, but very plastic looking (like the resin coated darkroom papers), I loaded the very heavy roll of BSAP, heavy because of the length (50 ft, 15 m) and the weight per square surface area, 290 g/m2. I was suggested to calibrate again(!) before making a profile, as I did. It turned up in my front panel display as a CUSTOM paper, with the correct paper name in the next menu. To my surprise, TWO profiles were added to the list of profiles in the computer, one with the GE suffix, one without. The colour print results are very beautiful indeed, but black and white cannot do without the GE, the difference with the inked and naked areas is big and more or less visible by change of light direction. With GE I got what I was looking for: a print resembling the baryte darkroom prints.
Question: Why should one look for profiles to download if it is so quick and easy to make your own profiles on your own machine with your own local variables? I have NOT found canned profiles of this paper on any HP site, but again, I do not think I need them, do I?
Bas
The profiles from HP on their site and delivered with the printers are the non-APS versions. In some cases like matte I found them to be smoother and more reliable.
Even though you rightfully calibrated for each paper, it doesn't say that every individual printer will output exactly the same or consistently with all colours. Head wear, environmental conditions, the storage and age of the paper, all will slightly change the output. By calibrating you bring the printer into a repeatable condition . By profiling, you characterize that condition , describing the exact colours produced. Hence, the most reliable output, and consistent is to do both a calibration, and a profile.
When you make a profile with the built in profiler, it creates two profiles for the same photo media. One and the primary is the settings you select when you print the chart be it with GE or Without. The second profile is assuming a certain density change and builds approximate curves to correct for this. They are quickly build automatically added profiles that can be used in a pinch but you should always profile for the use you will normally perform. If you use both, GE on and Off, then profile for each. I always name the profile so there is no doubt as to whether I used GE or not.
You might want to know that the custom profiles have to be applied as application managed color, as if you use printer manages color, default profiles are used and not your custom profile. This is also why it's good to download as many profiles as you have paper, so they populate the media types and have profiles ready for times you use printer manages color.