You’ve probably heard the old claim that Macs are preferred by graphic designers and desktop publishers. It’s often dismissed as a fanboy statement being totally without merit, but I came across an article which could very well explain the reason behind this old myth. It would seem that Mac OS X renders fonts properly, staying true to the design of the typeface, whereas Windows manipulates them so they better fit the pixel grid, which apparently results in sharper text.
The difference became more obvious recently, when I installed Safari for Windows. I have always thought that Arial on Mac looked much smoother and rounder, and I found it easier to read. Observe the difference below. Top: Windows with ClearType; Bottom: Safari with medium font smoothing (default).

Now it may just be personal taste, but when I’m trawling through RSS feeds, I’d rather stare at the bottom rendering for hours. It might be a bit blurrier, but who ever said sharpness was the holy grail of on-screen reading? The Safari rendering is easier on the eyes (softer, if you will) and much faster to read. In comparison, the Windows rendering looks awkwardly spaced and horizontally condensed, with circular letters appearing oval-shaped.
The obvious consequence of all this is that on a Mac, the on-screen rendering of a document is a more accurate representation of the printed product. If there is any truth to the “Macs are better for publishing” myth, I suspect this is a major contributor.


Are you sure the top one is ClearType? Might be just me, but I can’t see any of the subpixel aliasing.
(Also, if you’re stuck without Safari, this might save your eyes a bit - http://www.microsoft.com/typography/cleartype/tuner/Step1.aspx - it’s the MS ClearType Tuner doohickey that lets you turn up the level of font smoothing. Still not quite as nice as Safari, though.)
Yeah, it is definitely ClearType, zoom in. I have already run the tuner. Its probably just that Mac subpixel smoothing is much more obvious.
I object to the claim that “Mac OS X renders fonts properly” (and Windows does not). They just do it differently.
Also, with ClearType Tuner one can tune how they want Windows to render fonts. So it’s a bit of a moot point.
err.. right. Josh already linked to that thing. Never mind then.
OK so there is no universal rendering method that will please everybody. I prefer the way Mac does it :-) And ClearType tuner only really lets you vary the brightness of the sub pixel rendering.