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GX7 image resolution

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

wyeman wrote:

Should I be able to set my GX7 to produce images with a 300dpi resolution? The camera is new to me and I'm still not completely familiar with all the menu options. I've searched but can't find any indication of any such option.
Help would be appreciated - either that or perhaps an explanation as to why it can't be done.

Your camera will produce files with a certain number of pixels, depending on your setting (0000 x 0000). At that stage forget DPI.

When you come to reproduce the image, you can think about DPI (more properly Pixels Per Inch, PPI, although that is a bit pedantic).  If you have an image 3000 pixels across, a reproduction 10 inches across will be 300 DPI. If you reproduce it at 1 inch across, the resolution will be 3000 DPI. At 30 inches across, it will be 100 DPI. Your printer software will probably resample the image so you can't see individual pixels even at low resolution - it just look a bit soft. In my experience, anything at 240 DPI and above looks fine, and from a reasonable viewing distance even 180 DPI can look very good. 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.)

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Tim
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