Digital photos as viewed when clicked to enlarge...Pbase/Flickr/User Groups,etc.

Discussion in 'Digital Photography' started by Progressiveabsolution, Sep 3, 2006.

  1. Curious:

    I have been looking at some photos on the web and wonder why the
    sharpness goes down when a picture is enlarged? In other words, take
    any website, be it flickr/pbase/myfourthirds.com/etc. websites devoted
    to specific brands like Canon/Nikon/Leica...Why is it that when I
    enlarge these photos they lose their sharpness? They don't become
    blurry, they just don't look near as sharp.

    I ask this because my curiousity is in what these photos look like when
    blown up...if they maintain their sharpness as if printed at 4X6" or if
    they start to look softer?

    Thank you all!
     
    Progressiveabsolution, Sep 3, 2006
    #1
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  2. Progressiveabsolution

    Jim Guest

    "Progressiveabsolution" <> wrote in message
    news:...
    > Curious:
    >
    > I have been looking at some photos on the web and wonder why the
    > sharpness goes down when a picture is enlarged? In other words, take
    > any website, be it flickr/pbase/myfourthirds.com/etc. websites devoted
    > to specific brands like Canon/Nikon/Leica...Why is it that when I
    > enlarge these photos they lose their sharpness? They don't become
    > blurry, they just don't look near as sharp.
    >
    > I ask this because my curiousity is in what these photos look like when
    > blown up...if they maintain their sharpness as if printed at 4X6" or if
    > they start to look softer?
    >
    > Thank you all!
    >

    The number of pixels does not change when you do this. Hence they look
    worse when enlarged that they do in a smaller size.

    Jim
     
    Jim, Sep 3, 2006
    #2
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  3. > >

    > The number of pixels does not change when you do this. Hence they look
    > worse when enlarged that they do in a smaller size.
    >
    > Jim


    That makes sense Jim. What about with film photos. Would the same be
    applicable? In other words, if one downloads a 500kb film based image
    and then enlarges it, would it look softer as well?

    I cannot seem to understand why, say, an 8MP image that was shot at raw
    and post processed, then made into a 500kb image for net viewing would
    lose the initial file size of say 3000X2000 (not sure what it is at
    8MP...just a rough guess). Then you take film scanned at the same
    3000X2000 size, and resize it to 500kb jpg...would both of these images
    show the similar softness when they are enlarged?

    Thanks Jim!
     
    Progressiveabsolution, Sep 4, 2006
    #3
  4. Progressiveabsolution

    Roy G Guest

    Progressiveabsolution" <> wrote in message
    news:...
    > Curious:
    >
    > I have been looking at some photos on the web and wonder why the
    > sharpness goes down when a picture is enlarged? In other words, take
    > any website, be it flickr/pbase/myfourthirds.com/etc. websites devoted
    > to specific brands like Canon/Nikon/Leica...Why is it that when I
    > enlarge these photos they lose their sharpness? They don't become
    > blurry, they just don't look near as sharp.
    >
    > I ask this because my curiousity is in what these photos look like when
    > blown up...if they maintain their sharpness as if printed at 4X6" or if
    > they start to look softer?
    >
    > Thank you all!


    Hi.

    The original owner will have a full size version, which he will be able to
    enlarge, but he has only put a small copy on the web.

    They are not meant to be enlarged, just in case some clown might try to
    steal them.

    It does not matter whether they are scanned from Film, or out of a Digicam.
    The owner has sized them down to probably no more than 600 x 400 pixels,
    which if you try to print will give you a 2 inch long print.

    Zooming your screen will NOT change the number of pixels in the image.

    Roy G
     
    Roy G, Sep 4, 2006
    #4
  5. Here's an example of what I am referring to. Please click the larger
    size icon on the left corner above image:

    http://flickr.com/photos/tb303/163558047/

    In this next example which is quite different but has a kid in it, if
    you click on the image to enlarge it, it will become clearer...almost
    like a reverse process compared to the example above:

    http://contaxg.com/document.php?id=14502


    Another from flickr.com just so there is similar sourcing:

    http://flickr.com/photos/petit_ming/172360212/

    Again, click on the left corner to enlarge.
     
    Progressiveabsolution, Sep 4, 2006
    #5
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