Re: Printing digital pictures & DPI

In article <FeidnfFN1ZZbjgrUnZ2dnUVZ_jednZ2d@xxxxxxxxxxxx>,
Alan Browne <alan.browne@xxxxxxxxxxxxxxxxxxxxx> wrote:

Some Espon printers (like the 3800) print at 1440 dpi (even if you
select 300), so any resolution up to 1440 dpi will use the same amount
of ink.

What the printer actually prints I suspect is hardware dependent. I was
only talking about what you specify going in. Like cameras, internal
software can do some amazing things. Where it is possible to specify,
gong over 300 doesn't really gain anything.

I currently use an HP B9180, and I have no idea what it is doing
internally. I also have a Canon i9100 that I no longer use for
photography, but I know it is actually printing many dots to create one
of the 300. I don't know how many but it is a lot.

Excellent? Perhaps acceptable when viewed from far enough away.

No, excellent. It depends on your software. I am using LightZone and
it does an excellent job of uprezing. I haven't tried others, but I am
told some are pretty bad. However, what is acceptable to one person may
not be acceptable to another. Having printed the same images on 4x6,
8.5x11 and 13x19 paper, I am hard pressed to see any differences without
using a loupe.

--
Robert B. Peirce, Venetia, PA 724-941-6883
bob AT peirce-family.com [Mac]
rbp AT cooksonpeirce.com [Office]

.

Relevant Pages

  • Re: UNIDRV IOemUni::ImageProcessing Question
    ... If you specify more than one color plane, then you also specify the order in ... which the color-planes are to be sent. ... > I set ppbResult to TRUE which seems to get more bands now. ... > bitmap on the page and then gives up at 300 DPI. ...
    (microsoft.public.development.device.drivers)
  • Re: image processor..
    ... whatever rez you specify and reprocesses for itself. ... submission thing and specify specifically what "dpi" they want, ... it's really about pixels but sometimes they have ... That doesn't change the fact that resolution does ...
    (comp.graphics.apps.photoshop)
  • Re: image processor..
    ... whatever rez you specify and reprocesses for itself. ... submission thing and specify specifically what "dpi" they want, ... it's really about pixels but sometimes they have ... then throw the images out for not being to spec although they are in ...
    (comp.graphics.apps.photoshop)
  • Re: image processor..
    ... whatever rez you specify and reprocesses for itself. ... submission thing and specify specifically what "dpi" they want, ... it's really about pixels but sometimes they have ... That doesn't change the fact that resolution does ...
    (comp.graphics.apps.photoshop)
  • Re: Converting point size to logical units
    ... >> specify a height for a font with a given point size: ... >> different value depending on the HDC's mapping mode? ... >> printer device context for a printer with 1200 dpi resolution, ... >GetDeviceCaps() queries the capabilities of the device driver so on a higher DPI device it would return a larger value for ...
    (microsoft.public.win32.programmer.gdi)