While testing Alexei's scaling trick, I rediscovered an old source of
irritation (apart from the barely visible dot on the "i").
1. Download https://www.google.com/fonts#UsePlace:use/Collection:Open+Sans
2. Load OpenSans-Regular.ttf in ftview, look at sizes 10, 13, 15, 19
3. Press A and B and compare where the bytecode and the autohinter align
the top of capital letters, also press h to compare with the unhinted
outline.
I've noticed similar behavior by the autohinter in other fonts. Snapping
1 pixel too low like at the above sizes makes glyphs look like someone
stepped on them, 1 pixel too high is a bit less of an issue I think,
depending on the size. Bytecode and the CFF hinter do that, too,
sometimes, but e.g. the CFF hinter in general and the bytecode in this
example give me a better overall consistency impression..
What is the cause and is there anything to be done about it?
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