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Article #1121

Re: Scaling % value shown for imported graphics is not as expected

#1121
From: Adrian_S_Morse
Date: Tue, 13 Jan 2009 10:47
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Thanks Van,

I have a graphic file set with a resolution setting of 200dpi. I made a copy and set the resolution to 96dpi using SnagIt. Then I opened them both up in various programs ๏ฟฝ IE, Picture Viewer, SnagIT, PaintShop. In all these programs, the graphics display identically on screen at a view size of 100%. This is what I would expect as my (probably flawed) understanding is that the dpi setting of a graphic file is really intended as a default for printing and not for on-screen display. (Changing the resolution does not change the pixel info inside the graphic file in any way, right?) In contrast with IE, PaintShop and SnagIt, if I open the two graphics in Word or Frame they appear at different sizes on the page. Frame and Word are taking into account the dpi setting of the graphic in order to display it while other programs are not. (You suggested the test of importing at 200dpi and checking the width and height. When I do this the graphic appears much smaller in Frame than it does when opened in IE at 100%.)

Basically, if I take a screenshot of a GUI window and at some later stage in the life of that screenshot I see a field called Percent my expectation is that entering 100% will give me a screenshot that appears exactly like the original GUI window did, but this does not happen. In other words, I would expect any dpi setting the graphic file had to be ignored.

Not sure if I am explaining this very well๏ฟฝ
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Subject: Re: Scaling % value shown for imported graphics is not as expected
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Date: Tue, 13 Jan 2009 02:47:50 -0800
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