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  • rcurls
    replied
    Thanks very much for that, chaps. The whole question of resolution (in all its forms) is slowly seeping into my brain, as I'm sure you could tell!

    I did try stairstep interpolation as you suggested, taking an old image up to almost double the pixels it had been. While the result wouldn't have been good enough as a standalone, it would still be useful for layering and effects. As the work I'm aiming at is mostly multi-imaged, this is very helpful.

    Doug, I have added a book of yours to my Amazon wishlist!!

    Leave a comment:


  • Duv
    replied
    Hi Res

    Maybe just to pick up on Doug's thought, go into image size and change your width and height from pixels or inches to PERCENT.
    Change your values to 110. This will increase both image size and resolution with minimal degradation. Keep doing this in 10% steps until you get the image size that you need. Make sure both Constrain Proportions and Resample Image are checked.
    This is a Jim Vitale tip shared by Scott Kelby in his book The Photoshop book for digital photographers.
    I find this technique works very well.

    Cheers
    Duv

    Leave a comment:


  • Doug Nelson
    replied
    DPI and PPI are different things. You can print a 72ppi file at 2400dpi, and vice versa. An 800x600ppi image should make an acceptable 3x5 print. Larger than that and you'll start seeing pixels.

    There are techniques and software to hide the pixel-look, but they don't actually add resolution, and larger prints can end up looking blurry.

    Try stair-step interpolation, where you upsize 10% at a time until you reach your desired resolution.

    Leave a comment:


  • rcurls
    started a topic High res

    High res

    I'm probably learning all this the wrong way around, but it's only now striking me that a lot of my (older) photos are only medium resolution (around 800 x 600) and trying to get high resolution printed results out of them seems impossible.

    My printer is a Lexmark all in one X75. Is there any way that I can use these pics and yet still be able to print at say 300dpi without my final image being the size of a postage stamp?

    (Needless to say, I'm now taking photos ONLY in four figure pixel resolution).

    Thanks in advance.

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  • vickatter
    size and resolution
    by vickatter
    Hi!

    First Question:
    I'm a little mixed up with the way I can increase a file size.
    I had to do a few posters yesterday and I needed a final file of 70x100cm in 200dpi. The thing is that the pictures that I was using were a little smaller than that, so somebody at the studio...
    01-09-2008, 04:12 AM
  • Ambrosie
    Image size - lack of understanding
    by Ambrosie
    I have been an infrequent user of Photoshop 3 for over 10 years. From time to time I become aware that I have never fully understood some of the basics. One of these appears to be the matter of image size (height and width).

    To do the simple jobs I generally use Photshop for, I don't...
    08-06-2008, 12:27 PM
  • Angie B
    Yet another resolution question
    by Angie B
    I have been reading about resolution, ppi and dpi and unfortunately I am so confused. I know you guys have given a lot of advice about this, but I might understand better if I ask a specific question.

    I have transferred my digital image from RAW to TIFF and opened in photoshop. When...
    12-21-2004, 02:26 PM
  • zbgump
    resizing and resolution
    by zbgump
    I have a basic question that I should know the answer to. I'm working some pics my friends took with their digi cam to be sent to shutterfly. These images are being shrunked down by quite a bit.

    My questions is, is their any gain or loss by increasing the resolution when I decrease...
    12-02-2002, 10:22 PM
  • Rhonda
    [Definition] Resize vs. Resample
    by Rhonda
    When changing the size of an image, what's the difference between resizing and resampling? Is one better than the other? In one of the forums on scanning it was suggested to scan high and resize (but not resample) and that confused me. Thanks.
    09-14-2002, 04:03 PM
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