the issue that the pioneer units do not have square pixels has come up before for discussion previously in this forum on a number of occassions.
i have done some tests on my PRO1000HD, and it appears that when in dot-by-dot mode, there is indeed a stretching of the resultant image. this is unfortunate.
a perfect 20" diameter circle measures just under 21.25" horizontally. an increase of about 6.2%.
the individual pixels measure 0.858mm wide by 0.808mm high. a horizontal increase of, drum roll please, 6.2%.
i tried to drive the PDP at 1280x720 to see if i could then force it to scale the image vertically to 768 using the internal hardware and see if it maintained a perfect circle. unfortunatley, the DVI input won't support that resolution. i tried it again with analog 15pin VGA input. i could put it into 1280x720, but it was over-filling the PDP - the screen stretched off the plasma in all directions. however, the circle was only off by about 3%, although the loss of detail when it's not run at NR is not subtle.
so, i'm curious to hear any suggestions folks might have on how to combat this when driving at native rate. when push comes to shove, there are worse problems to have, but i'd prefer to figure out a fix - preferably on the digital side of things. this is a bit of a bummer.
jlm suggested i look for any tweaks in the video card settings. apparently the vigatec and rock allow stretching (and they're just pc's), though we weren't sure whether they did that in the analog or digital realms. jlm also suggested i poke around the DILA areas - apparently they run into similar problems.
thoughts?
i have done some tests on my PRO1000HD, and it appears that when in dot-by-dot mode, there is indeed a stretching of the resultant image. this is unfortunate.
a perfect 20" diameter circle measures just under 21.25" horizontally. an increase of about 6.2%.
the individual pixels measure 0.858mm wide by 0.808mm high. a horizontal increase of, drum roll please, 6.2%.
i tried to drive the PDP at 1280x720 to see if i could then force it to scale the image vertically to 768 using the internal hardware and see if it maintained a perfect circle. unfortunatley, the DVI input won't support that resolution. i tried it again with analog 15pin VGA input. i could put it into 1280x720, but it was over-filling the PDP - the screen stretched off the plasma in all directions. however, the circle was only off by about 3%, although the loss of detail when it's not run at NR is not subtle.
so, i'm curious to hear any suggestions folks might have on how to combat this when driving at native rate. when push comes to shove, there are worse problems to have, but i'd prefer to figure out a fix - preferably on the digital side of things. this is a bit of a bummer.
jlm suggested i look for any tweaks in the video card settings. apparently the vigatec and rock allow stretching (and they're just pc's), though we weren't sure whether they did that in the analog or digital realms. jlm also suggested i poke around the DILA areas - apparently they run into similar problems.
thoughts?