Save for the web???

Discussion in 'Photoshop' started by Guest, Jul 4, 2003.

  1. Guest

    Guest Guest

    Hi Group,

    I am informed that the new versions of windows (XP) now work in 96dpi.

    Can anyone tell me how to adjust my save for the web feature in Photoshop 7
    to save at the 96dpi?

    Thanks in advance to all those who take the time to reply.

    David
     
    Guest, Jul 4, 2003
    #1
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  2. Guest

    SpaceGirl Guest

    Am I missing something here but.... what if I have say, my screen running at
    say 1024x768, or 1600x600.... or stretched across two screens for
    multidesktopping. Wont that kinda screw up any "dpi" measurement. 1" on a
    800x600 screen works out around 72 dots... assuming a 15" display? Blah...
    this always confuses me anyway


    :)
     
    SpaceGirl, Jul 5, 2003
    #2
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  3. Guest

    Stephan Guest

    Your info is wrong
    DPI is for printing, a monitor couldn't care less how many DPI your picture
    has
    What is important is how many pixels wide and tall your images are.
    Try this: create 2 images 400 x 400 pixels, one at 72 and one at 300, save
    them with the same parameters and compare their sizes on your disk.
    Open both of them in a browser, see any difference?

    Stephan
     
    Stephan, Jul 5, 2003
    #3
  4. Guest

    Stephan Guest

    There are not dots on your display, unless you touch it with dirty fingers.
    800 x 600 pixels on a triple 21" display has the exact same size than 800 x
    600 on a old 14 inch display.There is just much more room left around the
    800 x 600 image on bigger monitors.

    Stephan
     
    Stephan, Jul 5, 2003
    #4
  5. Guest

    Wayne Fulton Guest

    No, XP is no different than Windows 3.1 or older in that respect. Windows
    has always defaulted to 96 dpi for font size. The 96 dpi number is only
    used to size text fonts. It has absolutely NOTHING to do with showing images
    (it is always ignored for images - it doesnt matter what the dpi says).
    Images are only shown according to their size in pixels on the screen, like
    maybe a 400x300 pixel image on a 800x600 pixel screen. That number is how
    large the image will be shown (the 400x300 pixels). dpi is not a factor.
    No, the Save For Web menu is going to scale to 72 dpi, period. However,
    there is no explainable purpose for 72 dpi images either, this is simply
    what Adobe does, for no explainable reason. It simply doesnt matter,
    because instead, the video screen is dimensioned in pixels, and the image is
    dimensioned in pixels, and that is all there is to it on the screen. There
    is no concept of dpi in video systems.

    You can use menu File - Save As, and select JPG, and then can save the JPG
    file at whatever resolution it already is (instead of 72 dpi). The video
    screen still will never care, the screen only shows the pixels directly.

    See http://www.scantips.com/no72dpi.html for a description of the full
    details of the (untrue) myth of 72 or 96 dpi for video.

    The ONLY time scaling a screen image to the 72 dpi or 96 dpi ballpark may be
    significant is if you are going to use the Text Tool to add text into the
    image. This is the one time the image resolution dpi number will be used,
    to size that added text font in the image, and the text size may come out
    closer to expected size on the screen at 72 dpi, or 300 dpi when printed
    (i.e., a 12 point font will approximate 12 point size either way). But as
    for showing that resulting image on the screen, dpi simply is never a factor
    on the screen.
     
    Wayne Fulton, Jul 5, 2003
    #5
  6. Guest

    Tom Thackrey Guest

    This is wrong. Set your 21" monitor to 800x600 and see if it's bigger than
    your 14" monitor.

    The size of an image on the display (assuming no scaling) is dependent on
    the physical dimensions of the monitor (e.g. 21") and the logical dimensions
    of the screen (e.g. 1024x768). Make the logical dimensions bigger and a
    given size image gets smaller. Since most graphics cards/monitors/operating
    systems support multiple logical dimensions there is no way that an 800x600
    image will be the exact same size on any two randomly selected monitors,
    except by chance.
     
    Tom Thackrey, Jul 5, 2003
    #6
  7. Guest

    Stephan Guest

    Sorry SpaceGirl, Duh it is for you and me but not for way too many people,
    some people spending $600 for PS don't spend an hour learning the very
    basics of digital imaging.
    Your sarcasm wasn't very obvious, I hope I didn't hurt your feelings ;-)

    Stephan
     
    Stephan, Jul 5, 2003
    #7
  8. Guest

    Hecate Guest

    No, you're wrong because you're not reading what he says. He doesn't
    say "set your monitor resolution to 800x600". He says that an 800x600
    image is the same size whether your display is a 14" set at 800x600 or
    a 21" set at 1600x1280.
     
    Hecate, Jul 6, 2003
    #8
  9. Guest

    Tom Thackrey Guest

    That's not what he said. He said an 800x600 would be the exact same size on
    a 14" monitor as a triple 21" display. It might be true if the displays were
    set up as you describe, but there are many other choices in pixel dimensions
    for both size monitors which will make the 800x600 pixel image have
    different sizes on different displays (or even the same display at different
    pixel dimensions).

    I thought I made that clear in the part of my post you neglected to copy in
    your reply.
     
    Tom Thackrey, Jul 7, 2003
    #9
  10. Guest

    Stephan Guest

    OK but who would want to have a 21"set at 800x600??? Strange idea...


    The size of an image on the display (assuming no scaling) is dependent on
    OK again, You can always set your monitor to any logical dimension
    But I think 17" are usually set at about 800
    19" at about 1024 and 21" at 1280. Am I right?

    Stephan
     
    Stephan, Jul 7, 2003
    #10
  11. Guest

    Tom Thackrey Guest

    Define usually. The point was that an 800x600 pixel image will display at
    different sizes depending on the setup of the video card/display.
     
    Tom Thackrey, Jul 7, 2003
    #11
  12. Guest

    Stephan Guest

    Usually = Most of the time, in general, in a majority of cases. OK?
    Anyway, 800 pixels is 800 pixels no matter what.

    Stephan
     
    Stephan, Jul 7, 2003
    #12
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