Needed to have the image on the screen the same size as the image on the paper (so I could hold the paper up to the screen and compare the two images). Zoom settings are arbitrary, zoom to 100% does not mean one to one.
In Manga Studio 5 here’s what I did.
Open an 11 by 17 page. Turn on grid (click view in tool bar at top of page, then click grid in drop down menu to put check mark next to it). Count number of horizontal, light blue, grid lines as you go down the page vertically. Divide number of grid lines by 17 to get lines per inch. Count the number of vertical grid lines across the page. Divide that number of lines by the size of the page in inches (11). You will get a different number of lines per inch, blame the programmers. I got 4.9 lines per inch (most likely grid lines are in metric spacing) vertically for my small monitor. Zoom out while holding a ruler to the screen, when you get 4.9 (OK 5) light blue grid lines per one inch note the zoom factor. Use that zoom to check how an image will look in real size (when printed on 11 by 17 inch paper). Zoom to 30% gets the screen image close to 11 by 17 paper size on my monitor.
The numbers will be different for different monitors/screens.
e-mail me from the contact page if you have questions or would like to talk about how to use Manga Studio 5.
Write on, draw on. Professor Hyram Voltage