After Michael Gordon stated there was no visible difference between these two settings on Photo Satin with version 6.03 of the Windows driver, I assumed it was probably true. However, I recently stumbled on evidence that there is a more complex interaction between the PPI sent to the printer, whether Best or MaxDPI is selected, and print quality.
While comparing the color of a test print on the DJ 130 on Photo Satin with Epson 9600 on Premium Luster I noticed some "waviness" in certain areas of the DJ 130 print. The problem was immediately noticeable to me and did not occur on the Epson 9600 print. The problem was in smooth areas where there was little or no variation in hue or tone, and was most noticeable in highlights. Running an alignment had no effect on the problem. At first I assumed that this was just the nature of the DJ 130, but subsequent experiments indicated otherwise. My findings: 1) Problem was very noticeable with Best setting and PPI of 240 or 360 (original image at 240 PPI, other PPI from interpolation done in Photoshop) 2) Problem mostly resolved (about 80-90% less) if image resized to 300 PPI in Photoshop before printing, but still using Best setting. 3) Problem completely resolved with MaxDPI, regardless of whether PPI was 240, or image resized to 300 PPI in Photoshop before printing. Take home points: 1) In this example, resizing to 300 PPI in Photoshop before printing on Best setting would be OK for all but the most discerning 2) If printing at other than 300 PPI, MaxDPI will provide noticeable improvement in smoothness in highlights which vary little in hue or tone (e.g., off-white wall). Comments welcome. --John ------------------------ Yahoo! Groups Sponsor --------------------~--> <font face=arial size=-1><a href="http://us.ard.yahoo.com/SIG=12h6ovtpo/M=362131.6882499.7825260.1510227/D=groups/S=1708261935:TM/Y=YAHOO/EXP=1123830704/A=2889191/R=0/SIG=10r90krvo/*http://www.thebeehive.org ">Get Bzzzy! (real tools to help you find a job) Welcome to the Sweet Life - brought to you by One Economy</a>.</font> --------------------------------------------------------------------~-> Website: http://groups.yahoo.com/group/HPDesignJet_Printers Post message: [email protected] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/HPDesignJet_Printers/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
