this question is actually a bit special, so I didn't know exactly how to formulate it. What I actually want is to see an image on the screen at same size (or as much close as possible) to the size it will get once printed. In other words, a 1:1 scale preview. I will provide the numbers I'm working with.
- The target paper size is a DIN A4.
- The target DPI is 350.
- The image resolution is 3840 x 2160 pixels.
- The display has a native resolution of 1920 x 1080 (which is the actual resolution configured) and a diagonal size of 21.5 inches.
- Based on the display numbers above, and according to this site, the pixel density of the screen is 102 DPI.
Now, when I open the image on GIMP and change the zoom level to 100%, since the image is so much bigger than the screen resolution it doesn't fit on the screen, and it looks actually much bigger than the actual size it will get on the paper. So, the question is which zoom level do I need to set in order to see the image as much big as it will be on the paper, or as much close as possible, in order to get a more accurate preview.
With the numbers provided there should be some calculations that could be done to figure it out, but I just don't see how to make sense of these numbers. Maybe I should ask this on a Math related StackExchange site instead? I considered that, but since you graphic designers are more familiar with DPI and printing maybe you can help me out here.
Sorry if this wasn't the right place to ask this.