"pixel size" (not pixel dimensions)

[Ivory]

What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)

Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

[ray]

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

I'm certainly no expert in the technicalities, but it would seem to me
that "pixel size" only makes sense when talking about physical media -
i.e. if you know the size of a camera sensor or a computer monitor and
you know it's dimensions in pixels, then you can easily calculate the
size of a pixel.

[Marvin]

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

A pixel doesn't have an inherent size. If you display an
image at 100 ppi, each pixel is 1/100" wide. But "pixel
size" is often used to mean the number of pixel in the
image. It is a "size" of the image.

[Ivory]

Post by Marvin

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

A pixel doesn't have an inherent size. If you display an
image at 100 ppi, each pixel is 1/100" wide. But "pixel
size" is often used to mean the number of pixel in the
image. It is a "size" of the image.

I guess what you're referring to is "pixel dimensions," the size of
the image in screen pixels, i.e., 1680 x 1080, or 800 x 600, etc.

[Joel]

Post by Ivory

Post by Marvin

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

A pixel doesn't have an inherent size. If you display an
image at 100 ppi, each pixel is 1/100" wide. But "pixel
size" is often used to mean the number of pixel in the
image. It is a "size" of the image.

I guess what you're referring to is "pixel dimensions," the size of
the image in screen pixels, i.e., 1680 x 1080, or 800 x 600, etc.

I have no idea what you mean by "Pixel Size" vs "Pixel Dimentions" and I
have never heard of anyone comparing the two above to give me the idea what
they are.

But I can give you a general information about the whole thing.

- The Image Value is based on W(idth) x H(eight) x R(esolution)

1680x1080 and 800x600 is a FULL value of Monitor Resolution *but* an
incomplete value of the Digital Image Resolution which requires 3 separated
values.

Or in Digital Image the "1680x1080" doesn't mean anything. But

1680x1080 x 300-ppi = some value
1680x1080 x 2-ppi = some value (less then the above but has some value).

PHOTOSHOP - if you use the "Image Resize" option then Photoshop will give
you 2 options to deal with the resolution "Re-Sample" vs "Not Re-Sample"

Example you have total of 10,000 pixels (or 10,000 dollars)

*NOT* Re-Sample = you will have 10,000 pixel no matter how you change thing
around. Or the VALUE will remanin the same as original VALUE

Re-Sample = you give Photoshop the option to change thing to whatever you
tell it to do, and you will end up with either. SAME or less than the
original VALUE.

- Or if you have 100 dollars, you can have either (10) $10, (5) $20, (100)
$1 and so on. But the value won't be more than $100 (or not to
Re-Sample)

- Now if you throw away $20 then you will end up with $80 instead of $100

[Cats]

What does "pixel size" (not pixel dimensions) mean?  (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

To me they are the same. Resolution (as in dpi/ppi) only means
something when an image is printed. You can change the dpi/ppi in
Photoshop or PaintShopPro in one of two ways - the resolution is
changed and that's it, or the image can be resized so that it
maintains the same dimensions from whatever ppi it had before to
whatever ppi it had afterwards. There is a checkbox in PaintShopPro
(and I think in Photoshop) that controls the behaviour.

Be very wary about doing this when more pixels are required, as it can
lead to lose of quality.

[Peter]

What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

To me they are the same. Resolution (as in dpi/ppi) only means
something when an image is printed. You can change the dpi/ppi in
Photoshop or PaintShopPro in one of two ways - the resolution is
changed and that's it, or the image can be resized so that it
maintains the same dimensions from whatever ppi it had before to
whatever ppi it had afterwards. There is a checkbox in PaintShopPro
(and I think in Photoshop) that controls the behaviour.

Be very wary about doing this when more pixels are required, as it can
lead to lose of quality.

Yes they can, but the algorithms in CS3 and Genuine Fractals do a pretty
good job of allowing us to make huge prints from small images. What we
sometimes forget is that enlargement will also bring out the defects.

[T Shadow]

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

http://en.wikipedia.org/wiki/Pixel

[SteveB]

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

Oh, good grief. Not another "size" thing, I hope.

Steve ;-)

[Paul Furman]

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

The only sense I can make of 'pixel size' is the physical size of pixels
in digital cameras. If it's something you change and not the number of
pixels then it's print size (dpi, ppi, etc).

[Rob Morley]

In article <53b8b74e-7907-452b-b8f3-

Post by Ivory
What does "pixel size" (not pixel dimensions) mean? (I realize that
changing the resolution changes the size of the image, what UCLA calls
the document size.)
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

Context?

[SteveB]

Do the math.
One pixel per inch is one inch square.
Or one square inch.
One hundred pixels per inch, and they are .01" square.
Not to be confused with .01 square inch.
But you get the picture.
Or maybe just .001 square inch of it.
You have to define the context within mathematic notation,or
mathematically
it's not accurate.
Steve

[Rob Morley]

Do the math.
One pixel per inch is one inch square.
Or one square inch.
One hundred pixels per inch, and they are .01" square.
Not to be confused with .01 square inch.
But you get the picture.
Or maybe just .001 square inch of it.
You have to define the context within mathematic notation,or
mathematically
it's not accurate.

Does that answer my question?

[SteveB]

Post by Rob Morley

Do the math.
One pixel per inch is one inch square.
Or one square inch.
One hundred pixels per inch, and they are .01" square.
Not to be confused with .01 square inch.
But you get the picture.
Or maybe just .001 square inch of it.
You have to define the context within mathematic notation,or
mathematically
it's not accurate.

Does that answer my question?

Did you post a question? I don't see it.

Steve

[Rob Morley]

Post by SteveB

Post by Rob Morley

Do the math.
One pixel per inch is one inch square.
Or one square inch.
One hundred pixels per inch, and they are .01" square.
Not to be confused with .01 square inch.
But you get the picture.
Or maybe just .001 square inch of it.
You have to define the context within mathematic notation,or
mathematically
it's not accurate.

Does that answer my question?

Did you post a question? I don't see it.
Does anyone know for sure how one changes "pixel size" (in Photoshop,
etc.)?

I asked:
Context?

And you replied as quoted above.