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Old Oct 31, 2003, 10:17 AM   #1
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Join Date: Oct 2003
Posts: 1
Default Olympus 740UZ EXIF question

Hi guys.
I've got my new C-740UZ couple of day ago and happy with it:
more then enough manual settings, nice big zoom and good picture quality
(some noise on jpeg but tiff absolutely clear).

I have one question on Olympus EXIF info:

In the Camera section it reads:
X-Resolution: 72
Y-Resolution: 72
Resolution unit: 2

Canon(A70, A80, G3 etc.) one looks different :
X-Resolution: 180
Y-Resolution: 180
Resolution unit: 2

Epson PhotoPC 3000Z:
X-Resolution: 480
Y-Resolution: 480
Resolution unit: 2

What does it means? Is this resolution related to picture resolution-quality
and makes Olympus looks like s!#t compare to other brands or it something else.


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Old Oct 31, 2003, 10:54 AM   #2
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Join Date: Aug 2002
Posts: 1,910

First, you don't need to swear to get your point across...there are younger people reading these forums.

The DPI number is really meaningless...when it comes into play is when you print. For this example I'll use a 2mp 1200x1600 picture.

At 72dpi the printsize measures 12.222"x16.666".
At 150dpi it will measure 8"x10.666".
At 180dpi it will measure 6.666"x8.888".
At 480dpi it will measure 2.5"x3".

It's the same 1200x1600 pixel print, but by changing the DPI or dots per inch you are changing the print size. When you go into your editing program, by changing the print size you are changing the dpi, and vice-versa.
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