DPI vc resolution

[Ilia Poliakov]

Hi all,

I've taken two photos in 640x480 mode and in 1024x768. The real size of the
photos is the same (I mean the pictures are absolutletely the same), but the
dpi is also the same (120 dpi). How can it be? What do I not understand?

[J. A. Mc.]

On Mon, 14 Jul 2003 16:59:05 +0200, "Ilia Poliakov"
<ipoliak@allesklar.de> found these unused words floating about:

>Hi all,
>
>I've taken two photos in 640x480 mode and in 1024x768. The real size of the
>photos is the same (I mean the pictures are absolutletely the same), but the
>dpi is also the same (120 dpi). How can it be? What do I not understand?
>

Define "real size" from your view.
Monitor, print, files ???

[Ilia Poliakov]

> Define "real size" from your view.

"Real size" is what on the picture is. I have two totally identical
pictures: one is 640x480 and the other is 1024x768. And in the file
properties the image resolution is 120 dpi for both pictures.

[Tom Thackrey]

On 14-Jul-2003, "Ilia Poliakov" <ipoliak@allesklar.de> wrote:

> > Define "real size" from your view.

>
> "Real size" is what on the picture is. I have two totally identical
> pictures: one is 640x480 and the other is 1024x768. And in the file
> properties the image resolution is 120 dpi for both pictures.

if they have different pixel dimensions they aren't identical and they will
display as different sizes on your monitor (at 100%). Either you're confused
about the dimensions or aren't telling us something. If you can put them on
a web a site and post the link here it would help a great deal. If you email
them to me I will post a link.

--
Tom Thackrey
[url]www.creative-light.com[/url]

[Richard Howes]

By definition these two images are NOT the same size in terms of pixel
dimensions.
If you're viewing the images on your computer monitor, whatever the dpi
number is is quite irrelevant.
If you're using MS Internet Explorer to look at them IE will resize the
displayed image to fit your monitor, perhaps this is what's misleading you.

"Ilia Poliakov" <ipoliak@allesklar.de> wrote in message
news:beuger$972pq$1@ID-120622.news.uni-berlin.de...

> Hi all,
>
> I've taken two photos in 640x480 mode and in 1024x768. The real size of

the

> photos is the same (I mean the pictures are absolutletely the same), but

the

> dpi is also the same (120 dpi). How can it be? What do I not understand?
>
>

[Don Stauffer]

You mean the field of view is the same? Yes, we have beat this to death
lately. When you change the resolution on digicams, you do not crop,
you change sampling interval, samples per unit field angle (samples per
degree of picture field angle. If you look closely on a high res
printout or high res monitor you should see some difference in
'softness'.


Ilia Poliakov wrote:

>

> > Define "real size" from your view.

>
> "Real size" is what on the picture is. I have two totally identical
> pictures: one is 640x480 and the other is 1024x768. And in the file
> properties the image resolution is 120 dpi for both pictures.

--
Don Stauffer in Minnesota
[email]stauffer@usfamily.net[/email]
webpage- [url]http://www.usfamily.net/web/stauffer[/url]