I am having an issue with a font in development, and it is this: The vertical stems are too irregular in width/colour/weight when they are rendered in webbrowsers like Safari or Firefox in OS X. Firefox is marginally better than Safari. A PDF has the same issue, but to a lesser degree. All the stems in question are of exactly the same width. Other fonts like Ariel or other webfonts do not show this issue. I tried both CFF/OTF and TTF, but they both have the same issue. This leads me to think there is some hinting setting I have borked, but OS X does not use hinting, so huh? What can be wrong? I'm working with a UPM of 2048, but I seem to remember making a test in 1000, and that had the same issue.
I'll be grateful for any pointers, hints, puns.