Curious about text rendering characteristics between Flash 10, Silverlight 4.0 and
Photoshop, I created two small applications, one in Flash CS 4, and one in Visual
Studio 2010. The Silverlight 4.0 tests are using the release candidate which was
current as of March 23, 2010.
I used Times New Roman in all of the tests and used full text justification in all
of the examples.
There are two types of text rendering available in Silverlight, Animated and
ClearType (the default).
(You may click on images to see full size versions in a new window – I did that so
that it would be easy for you to move the images around and do your own side-by-side
comparisons).
Flash 10 has similar offerings, with an Anti-alias for readability and anti-alias
for animation option:
Side by side using the animated mode:
Then, the options for “readability” or the default compared side-by-side. (Note that I flipped the apps around so they’d layer correctly below)
To my eye, I preferred the Flash Anti-alias for Readability option just slightly
over the other options. The animation friendly options left the text feeling too
soft for me. What I didn’t like about the Silverlight ClearType option was the
darkness of the font overall.
Zoomed in (with Silverlight on the top). You’ll see how the Silverlight text uses
darker strokes overall.
The levels of the “anti-alias for readability” text:
Whereas the levels of the Silverlight ClearType option:
Interesting difference.
I next tweaked the foreground color of the text in the Silverlight ClearType
example, deciding that the black was too black for comfortable on screen reading.
I set the foreground of the text to #3d3d3d (click image to enlarge).
Very close. So close that I’m not sure that I could distinguish between the two
renderings without detailed study. The lightening of the foreground color made the
text look a bit softer than the original, but not so far as to make the text blurry.
If you were wondering what the appearance of the text would be when aliased, here’s
Photoshop’s rendering (I’m warning you … you wont’ like it!):
Below, you can see how the bowl of the letter ‘a’ in Flash 10 and the area along the
meanline are nearly disconnected from the stem. This general lightness appears
throughout Flash’s rendering of Times New Roman.
Since my original inspiration was to determine how to make text look as sharp as
possible when using Silverlight, I wanted to see what I liked best from what was
available readily on my Windows 7 PC. I used:
- Chrome
- Firefox
- Flash (CS4 / 10.0)
- Internet Explorer 8
- Internet Explorer 9 Preview (March 2010)
- Adobe Illustrator CS4
- Adobe Photoshop CS5
- Safari
- Silverlight 4 (RC)
For a text-rendering side by side comparison, I put the block of text next to the
text from Photoshop Crisp, Silverlight, and Flash.
Going further, I’ve created zoomed images of the lowercase letter “a” from the
sources mentioned above. I’m amazed how differently an anti-aliased “a” can be when
different companies all approach the problem with unique algorithms.
Chrome
Firefox
Flash Animation
Flash Readability
Internet Explorer 8
Internet Explorer 9
Adobe Illustrator CS 4
Photoshop (No Anti-alias option selected)
Photoshop Crisp
Photoshop Sharp
Photoshop Smooth
Safari (Default)
Safari (Best for LCD)
Silverlight Animation
Silverlight ClearType Default
Silverlight ClearType (Lightened)
Microsoft Word 2007
What’s your preference? Hope you found this useful.
(If you’re wondering how I created full-text-justification in Silverlight, I’ll
provide the solution in a follow-on post).