Zoom level VS Real size (1.0.6)

Report new issues and add information on existing ones.

Moderator: Kyete

Post Reply
User avatar
Balmung
Posts: 157
Joined: Sun Mar 28, 2021 2:12 pm
Location: Germany

Zoom level VS Real size (1.0.6)

Post by Balmung » Fri May 06, 2022 11:26 am

To get a 1:1 view in a sense of WYSIWG I need to set the zoom level to 34.50%. Then I'm able to place a printed map on my screen and everything matches. I expected that at a 100% zoom.

User avatar
Kanchou
Site Admin
Posts: 973
Joined: Mon Nov 10, 2014 2:23 pm

Re: Zoom level VS Real size (1.0.6)

Post by Kanchou » Fri May 06, 2022 1:23 pm

Balmung wrote:
Fri May 06, 2022 11:26 am
To get a 1:1 view in a sense of WYSIWG I need to set the zoom level to 34.50%. Then I'm able to place a printed map on my screen and everything matches. I expected that at a 100% zoom.
That would depend on the print vs screen resolution. What are your map sizes (pixel, resolution, etc) vs the map that you scanned resolution/size?

Thank you!

- Alejandro
Alejandro S. Canosa
Three Minds Software

User avatar
Balmung
Posts: 157
Joined: Sun Mar 28, 2021 2:12 pm
Location: Germany

Re: Zoom level VS Real size (1.0.6)

Post by Balmung » Sat May 07, 2022 1:58 am

  • Map: DIN A4, 300 DPI
  • Display: 27", 108.95 PPI
If it depends you may close this issue :)

nDervish
Posts: 89
Joined: Sat Nov 15, 2014 12:18 am

Re: Zoom level VS Real size (1.0.6)

Post by nDervish » Sat May 07, 2022 9:17 am

The difference is caused by the DPI/PPI values of your different displays. When OWM displays on-screen at 100%, that's 1 on-screen pixel = 1 map pixel (which is to say, based on the map's pixel dimensions - a 1024x768 map would be 1024 map pixels wide by 768 map pixels high). Similarly, when it prints at 100%, that's one on-page pixel = 1 map pixel.

But your print pixels (300 DPI) are only 36.3% as large as your screen pixels (108.95 PPI), so it ends up being only 36.3% as large on the page as it is on the screen.

Post Reply