Digital BW, The Print

Interesting how these things work.  I think I found in lens testing that the
best way to get a good focus with an AF system was to have it come at the
correct value from both directions and then average the 2 -- that seemed to
cancel out the system's tendency to overshoot or whatever.  With the DPT22 I
ended up doing close to what you did -- alternate between test strips.  

Paul
www.PaulRoark.com 




> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of
> dfaprinting
> Sent: Wednesday, August 17, 2005 6:23 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: Fade test -- 4800 v. UT7, MIS old v. new, &
> Kirkland
> 
> In my use of the DTP22, I found that it was very consistant over
> time. By that I mean that measurements would be very similar in
> different sessions, as long as you calibrate before each session. And
> actually, I think the DTP22 had better consistancy when reading a
> single patch multiple times than my i1. If I rest the i1 over a
> patch, and read that patch time after time, the value changes each
> time, and the values also increase each time. I can change a 1.7
> patch into a 1.5 by simply reading a dozen or more times in a row,
> it's very strange. Now if I alternate between that black patch and
> paper white, that increase does not happen. The DTP22 was just a
> random value that hovered around the "correct" value when you read
> the same patch multiple times without measuring something different,
> which is more along the line of what you would expect. And the
> shocker was that my 1995 DTP22 measurements were very close to the i1
> when I first got the i1, the old thing held up very well over time. I
> almost even sent it back to Xrite to be tweaked, but now that seems
> like money poorly spent when another $400 will get you a brand new i1
> that reads much faster than the DTP22 ever could. I should probably
> sell the DTP22 and the DTP32 (old model) that I have.
> 
> The other shocker is how accurate the Color Savvy Colormouse was. For
> density reading that would make a decent tool to use.
> 
> 
> 
> 
> 
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