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GX7 image resolution

Started Jul 26, 2019 | Questions thread
timo Veteran Member • Posts: 5,927
Re: GX7 image resolution

dinoSnake wrote:

timo wrote:

Assuming you don't resample the original file in your computer, the DPI will depend on the size at which you reproduce or view the image. (A figure of 72 dpi sometimes comes up in file data - ignore it: it's just a placeholder.)

Well, strictly speaking, 72 DPI isn't a placeholder: 72 DPI it was the standard DPI for analog CRT shadow masks, and therefore for decades was the default for anything that displayed data on that CRT - images or text, editors or viewers.

The theory of operation was that, if your CRT shadow mask was of "standard" design, you had 72DPI; and if we set our software to display/work with 72DPI as default, you got WYSIWYG (or as close as you could manage it back then).

And the de facto 'standard' stuck. And hung around, even beyond 72DPI displays to, now, 144+ DPI displays. Where 72 DPI is no longer relevant, but you need to create a starting default for every setting regardless.

Fair enough!

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