Digital BW, The Print

Paul,

I may take the time over the holidays to make spectral comparisons
with Spyder Pro. I just found a kit here in R&D and yes its a single
reader. This means any target can be used. So that makes that easy.

I will compare the reading of gray patches with Spyder, DTP70, EyeOne
and will do the EyeOne as strip, auto (iO) and manual for comparison.
The DTP 70 is automated but can be used to read a single patch.
Will be interesting to see the results.

I will compare delta E differences between everything.

I will produce K7 profiles using each set of data. Then print a
linearization confirmation target to see which system measures best
for reproducing the Piezography K7 linear Gamma 2.2 result.

I will use the Piezography Profiler in direct read mode for the
linearization confirmation, but use the data from all the profiling
measurements as an import.

Then share the results here and let K7 users know what they can expect
by reading their own data for a custom K7 profile.

In the meantime I am waiting for the first L data to come in for a
remote profile attempt!

Jon Cone
Piezography nut


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "pr_roark"
<pr_roark@...> wrote:
>
>  
> > Does the Spyder read single patches or rows? 
> 
> The PFP 2 that I use reads individual patches.  I think it's the best 
> way to go for reading 21-step test files, which is what I do.  I do 
> not read large targets with it.  I don't think it's necessary, and a 
> strip reader is what I'd want for that process.
> 
> >... to eliminate human error.
> 
> Based on some comparisons I've seen in the past, careful manual 
> reading is slightly more accurate than strip reading.
> 
> With my 21-step test file,
>  
> http://www.paulroark.com/BW-Info/21-Step_0-100_L16_16-bit-top.zip
> 
> I don't have significant errors. (I have put a white dot on the PFP 
> reader to help alignment.)
>  
> It takes one minute to read 21 steps, and that is all I find is 
> needed. 
> 
> Paul
> www.PaulRoark.com
>