on 15/8/05 16:22, Lee Badham wrote :
>>> An Epson Pro dealer told me the other day that the resolution of an image
>>> will
>>> change the color integrity of the image when it is printed using an Epson
>>> printer. They said that printing an image at 300PPI will provide a color
>>> shift
>>> because the image must be converted to a resolution that the printer can use
>>> like 288. The dealer said all images that are to be printed with an Epson
>>> should be at a PPI divisible into 1440/2880. If the image is at a different
>>> PPI (like 300PPI) there will be color shifts because of the conversion to a
>>> PPI that fits into the Epson printing resolutions. Is this true?
>>
>
> You can get a print quality difference - i.e. sharpness and small detail,
> but not really a colour shift. On an image itself you are unlikely to ever
> see any problems, but if you have any rendered text in an image, you might
> see jagged edges on you text.
If there are any differences due to interpolation they would be very small
and only visible on the miniscule differences on edge data that was
transformed. You'd have to really want to go fishing for the differences
even to see them and possibly only with a loupe.
On the other hand print quality resolution can create differences in color
and grey balance due to the modulation of the inkjet droplet placement at
higher resolutions and also linearisation of course.
--
Neil Snape photographer Paris France email@hidden
http://www.neilsnape.com
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