Install the non-UI version, which can be found in the Watch dev kit. (https://developer.apple.com/watch/human-interface-guidelines/resources/)
You will need to click the Download All link if you do not have a developer account, the other separate downloads redirect you to your account screen which is odd.
You cannot use the UI-tagged version as a typeface font because it has several subtle tweaks and cheats to make it look prettier in the system. This is also why you'll never find the system font "LastResort" which is the one which throws up the little diamond-with-a-question-mark if it really can't find a substitute typeface character.
This is SF Compact, not SF for iOS and Mac. They are distinct.
I don’t think there is such a thing as an ‘UI-tagged’ version. SF was created for just this purpose. The simple reason is that Apple likes to keep the typeface exclusive to the system and Apple software promotion. They own the typeface after all, they could make it available. Developers are under a licence agreement and the rules for using the typeface are very strict, i.e. only for Apple software development and the promotion thereof.
Ah I didn't realise that Compact was a different font, I assumed the 'text' and 'display' variants were the two different versions, my mistake
These are for different font sizes. Display is for larger text (20pt and above), Text for everything below that. Text has some different characters and a different kerning to improve its legibility at smaller sizes. SF Compact is a different cut, with flatter round shapes. Apple had an interesting developer session about the new typeface at the WWDC, if you are interested in that.
You can download both the watchOS and iOS & OS X versions of San Francisco here.
https://developer.apple.com/fonts/
The files themselves are found in /System/Library/Fonts and have SFNS prefix. As to how one could make them appear in Font Book, I have no idea. I even tried copying them over to another Mac (running Mavericks) and I can't get them to appear in Font Book there either.
This is SF Compact, not SF for iOS and Mac. They are distinct.
I don’t think there is such a thing as an ‘UI-tagged’ version. SF was created for just this purpose. The simple reason is that Apple likes to keep the typeface exclusive to the system and Apple software promotion and intentionally blocks it from showing in font panels and Font Book. They own the typeface after all, they could make it available to everyone. Developers are under a licence agreement and the rules for using the typeface are very strict, i.e. only for Apple software development and the promotion thereof.
Microsoft has had it for years but most third-party apps were written in a 'hacky' way that resulted in inconsistent appearances.Not a San Francisco issue . . . . but, I was still (after years) hoping for Resolution Independence in this new release. I cannot understand why Apple refuses to do this when MS did it years ago. I have a 27" RETINA iMac and the system text is almost unreadable . . . and I have 20/15 vision. Very disappointing. And, using magnification is, at best, a clunky solution, really, no solution at all. Anyone else concerned about this?
Not a San Francisco issue . . . . but, I was still (after years) hoping for Resolution Independence in this new release. I cannot understand why Apple refuses to do this when MS did it years ago. I have a 27" RETINA iMac and the system text is almost unreadable . . . and I have 20/15 vision. Very disappointing. And, using magnification is, at best, a clunky solution, really, no solution at all. Anyone else concerned about this?
Something that may help a little bit with system font readability is System Preferences > Accessibility > Increase contrast. I do think there should be a bold font option like on iOS.Not a San Francisco issue . . . . but, I was still (after years) hoping for Resolution Independence in this new release. I cannot understand why Apple refuses to do this when MS did it years ago. I have a 27" RETINA iMac and the system text is almost unreadable . . . and I have 20/15 vision. Very disappointing. And, using magnification is, at best, a clunky solution, really, no solution at all. Anyone else concerned about this?