Datacolor User to User Support Group.

I made a profile for Kirkland letter size glossy paper
(media setting:Epson Premium Glossy Photo Paper)

Problem 1: shadows a bit dark
Problem 2: on the photodisc.com test image the grey ramp on the right
has a horizontal band of cyan about halfway down the page that
interrupts the transition; the band is about the thickness of the
apple in the photo

These problems are compared to using Epson's Premium Glossy Photo
Paper profile, which doesn't have the cyan band and has lighter shadows.

Printer & ink: Epson 4000, UC
225 patch test target used

My profile for Epson Luster Professional (250) also has darker shadows
and is a bit cyan compared to Epson's profile for this paper.

Questions/Help(!):
1. How do I tweak the profiles to lighten up the shadows?  The
Brightness control seems a bit crude....?
2. Wazzup with the cyan band?  I'll re-measure in the meantime and
report back if there's improvement...

Thanks!
Ken

--- In colorvision_group@yahoogroups.com, "Ken Chow" <kenchow@...> wrote:
>
>> Problem 2: on the photodisc.com test image the grey ramp on the right
> has a horizontal band of cyan about halfway down the page that
> interrupts the transition; the band is about the thickness of the
> apple in the photo

I got a cyan band when I accidentaly read the wrong patch.  Try going
back and seeing if any of the patches look out of sequence.  Its a
little hard to spot some of the subtle ones but I've definately had
the same result from a missed reading.

Tom T

>--- In colorvision_group@yahoogroups.com, "Ken Chow" <kenchow@...> wrote:
>>
>>> Problem 2: on the photodisc.com test image the grey ramp on the right
>> has a horizontal band of cyan about halfway down the page that
>> interrupts the transition; the band is about the thickness of the
>> apple in the photo
>
>I got a cyan band when I accidentaly read the wrong patch.  Try going
>back and seeing if any of the patches look out of sequence.  Its a
>little hard to spot some of the subtle ones but I've definately had
>the same result from a missed reading.
>
>Tom T
>

In the beta 1.1 software (for anyone who has it), there's an additional
trick which makes checking the patches even easier.

When the Target window is open, and you're examining it, you can use
Ctrl-1, 2, 3 (Windows) or Apple-1, 2, 3 (Mac) to switch between Pure,
Split, and Measured display. This is MUCH easier than clicking in the popup
in the lower right corner of the target window. You can instantly toggle
the display between Pure and Measured to check the patch squares visually.

-- 
David Miller
Senior Software Developer, Digital Color Solutions
ColorVision

--- In colorvision_group@yahoogroups.com, David Miller <dm2363@...> wrote:

> In the beta 1.1 software (for anyone who has it), there's an additional
> trick which makes checking the patches even easier.
> 
> When the Target window is open, and you're examining it, you can use
> Ctrl-1, 2, 3 (Windows) or Apple-1, 2, 3 (Mac) to switch between Pure,
> Split, and Measured display. This is MUCH easier than clicking in
the popup
> in the lower right corner of the target window. You can instantly toggle
> the display between Pure and Measured to check the patch squares
visually.

1.1b1?  Ctrl-1 does not seem to do anything for me.

>--- In colorvision_group@yahoogroups.com, David Miller <dm2363@...> wrote:
>
>> In the beta 1.1 software (for anyone who has it), there's an additional
>> trick which makes checking the patches even easier.
>>
>> When the Target window is open, and you're examining it, you can use
>> Ctrl-1, 2, 3 (Windows) or Apple-1, 2, 3 (Mac) to switch between Pure,
>> Split, and Measured display. This is MUCH easier than clicking in
>the popup
>> in the lower right corner of the target window. You can instantly toggle
>> the display between Pure and Measured to check the patch squares
>visually.
>
>1.1b1?  Ctrl-1 does not seem to do anything for me.
>

Sorry about that, in the 1.1b5 I'm working on, but which isn't available
yet.


-- 
David Miller
Senior Software Developer, Digital Color Solutions
ColorVision

--- In colorvision_group@yahoogroups.com, David Miller <dm2363@...> 
> Sorry about that, in the 1.1b5 I'm working on, but which isn't available
> yet.
> 

No worries.  Good idea though.

Thanks CD and Tom for your help.

I re-read the patches but got the same result with the cyan band, turns 
out CD's advice to use Saturation intent gets rid of that!

Ken

CDTobie@... wrote:

>>
> Use the saturation intent to print your image. Cyan band will disappear. 
> Don't ask why; when I figure that out, I'll let you know. Changing 
> intent is a stardard trick for sidestepping such issues, but of course, 
> at our end, we want to avoid them instead...
>