Re: [AGA SC] New AGA Pamphlet

["S. Hieber" <shieber@yahoo.com>]

What I didn't know is that at one zoom factor, Adobe 6.01
uses a particular resolution and at the next it uses the
same number of pixels. Go even farther, then it adjusts and
you see a nice picture again -- go even farther and it's
Westworld all over again. It doesn't matter which direction
on moves in. I just didn't expect that behavior from a
program as slow this.

sh
--- Erik Olson <erik@thekrib.com> wrote:
> Aaah, not again with the whole dpi thing...shades of Mary
> McCaw era.  OK, 
> one more time:
> 
> Always ignore DPI on any raw images, just look for ones
> with highest
> numbers of pixels.  Remember that the "dpi" field is just
> a tag on the
> image in order to convert between its actual resolution
> (pixels) and
> printing size.  In Photoshop, you can change the dpi in
> the "Image Size"  
> menu all you want without changing the actual image
> itself (when the
> "Rescale Image" checkbox is left unchecked).  A 300 dpi
> 1"x1" image
> becomes a 150 dpi 2"x2" image.  Or even a 75 dpi 4"x4". 
> It's the same
> image.  Scanners usually set the dpi based on the
> original scan, so if it 
> was a 4x5" print at 300 dpi, then these are the values in
> the image.  When 
> I scan a negative, it's 4000 dpi, but the image size is
> about 1x1.5 
> inches.  Digital camera images often set the dpi flag
> arbitrarily, so it 
> might be 300, 72, whatever.
> 
> If someone gives you me a raw image, the first thing I do
> is go into that
> menu (making sure the "rescale" box is unchecked), and
> change the dpi to
> 300.  This gives me an idea of how big the image can be
> printed.
> 
> I don't have the disks with me, so I can't say about
> Kenneth Cheng's
> picture, but I do remember it being very good resolution,
> enough to use as
> the cover art for the CD.  Hofteizer's was not that
> great, but should be
> fine as an insert.  Now, if you're saying the cover was
> "72 dpi reduced
> 75%"... this either means you made it 3/4 the original
> size, meaning it's
> now about 96 dpi, or you're saying it's 1/4 the original
> size, or 288 dpi.  
> If it's the former, then I definitely would give it a 2-3
> pixel blur to
> get out the pixelation.  I just despise those pixellated
> images... oh they
> drive me nuts when I see one in a pro magazine.
> 
> I found the text hard to read against the background on
> my screen too.  
> Often this doesn't translate into print well, so I would
> go with how it 
> looks on paper.


=====
S. Hieber

-  -   -   -   -   -   -   -
Amano Returns
to the AGA Annual Convention
Nov 2004 -- Baltimore

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