Quote:
Originally Posted by PRS-T2
##### Default values are: #################
7.13 7.81 8.49 9.17 10.53 12.56 16.98 29.2
This translates to height in px:
19.2; 21.1; 23; 24.7; 28.6; 33.9; 45.8; 78.9
How? FONT_RAMP value * 2.7 = height in px
How many px per mm are shown on 300dpi PW3/Voyage:
300/25,4 = 11,81px/mm
Height in px / 11,81 = height in mm
Example:
29.2*2,7=78.9
78.9/11.81=6.68mm
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I believe, the sizes are in typography points (pt). 1pt is 1/72 of an inch.
1 inch is 25.4mm, so, 1pt is 25.4 / 72 = 0.352778mm
To translate the sizes in pixels (px) for Kindle Oasis (or Voyage) with 300dpi screens, calculation would be something like this:
Smallest font: 7.13 * 300 / 72 = 29.7 px
Default (4th) font: 9.17 * 300 / 72 = 38.2 px
Biggest font: 29.2 * 300 / 72 = 125.14 px
In millimeters this would be for the biggest font: 29.2 * 0.352778 = 10.23mm