QTR-Quadtone RIP

Hi Fabio,

What platform are you on (PC or Mac) and which application including version
number are you printing from?

Txs,

Mike

On 21 July 2011 19:39, HalfCameraGeek <fabio@...> wrote:

> **
>
>
> Hello,
>
> I've been evaluating he ICC profile creation tools of QuadToneRIP and
> trying to understand my results with it. My interested is specifically
> in the profiling tools, so I wanted to try it before buying.
>
> I was able to successfully profile my Epson 3800 using ABW mode and
> Canson Infinity Baryta 310g/m2 paper, but the resulting profile seems to
> be almost neutral. Soft proofing with it gives me no tonal changes, only
> paper / ink color simulation, and prints of the 21 step target show
> roughly the same values as before profiling.
>
> I've done a fair bit of homework before coming here and the only
> explanation I've come with is that my printer was pretty linear by
> default. I've used the Gray gamma 2.2 target provided by Paul Roark,
> since most of my images are in AdobeRGB colorspace and I print a lot
> from Lightroom. Using the original untagged target from the Eye-One
> folder gives me the same results (almost no change by applying profile),
> but a totally different gamma curve, as expected.
>
> In an attempt to troubleshoot it, I've profiled a HP black and white
> laser printer. This device was highly unlinear to begin with and, this
> time, I was able to see a big change on the curves after outputting with
> the ICC profile.
>
> Could anyone help me to assess these results and try to understand what
> is going on? Why don't I see any change on the profiled prints?
>
> Listed below are all my settings, measurements and results.
>
> Measurement device: SPyder3Print. Direct export in QTR ICC profiling
> format.
>
> Epson 3800, ABW mode, Canson Baryta 310g paper
> Original 21 step target bundled with QTR
> Measurements used to profile http://pastebin.com/rHd7Yvue
> <http://pastebin.com/rHd7Yvue>
> After profile http://pastebin.com/hSpZaF5m
> <http://pastebin.com/hSpZaF5m>
> Visual comparison of the two tonal responses
> http://i.imgur.com/FC2Ar.png <http://i.imgur.com/FC2Ar.png>
>
> Epson 3800, ABW mode, Canson Baryta 310g paper
> Paul Roark Gray gamma 2.2 target
> Measurements used to profile http://pastebin.com/cj6dcDdg
> <http://pastebin.com/cj6dcDdg>
> After profile http://pastebin.com/UrEL5qV9
> <http://pastebin.com/UrEL5qV9>
> Visual comparison of the two tonal responses
> http://i.imgur.com/NBVPk.png <http://i.imgur.com/NBVPk.png>
>
> Epson 3800, black only mode, lesser grade photo paper
> Paul Roark Gray gamma 2.2 target
> Measurements used to profile http://pastebin.com/Z4ZTkgr3
> <http://pastebin.com/Z4ZTkgr3>
> After profile http://pastebin.com/4iqzpENB
> <http://pastebin.com/4iqzpENB>
> Visual comparison of the two tonal responses
> http://i.imgur.com/UfaWv.png <http://i.imgur.com/UfaWv.png>
>
> Hp 2025dn, grayscale mode, plain paper
> Paul Roark Gray gamma 2.2 target
> Measurements used to profile http://pastebin.com/XfwmaVJy
> <http://pastebin.com/XfwmaVJy>
> After profile http://pastebin.com/1y5HgrBu
> <http://pastebin.com/1y5HgrBu>
> Visual comparison of the two tonal responses
> http://i.imgur.com/zJUSc.png <http://i.imgur.com/zJUSc.png>
>
> Thank you for your help,
>
> Fabio Pili
>
> [Non-text portions of this message have been removed]
>
>  
>


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