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Why are graduated edges visible in hugely magnified layers?

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Tim Andrews
Why are graduated edges visible in hugely magnified layers?
on Jan 19, 2010 at 8:00:04 pm

[sorry if this is trivial, but it looks strange to me]

a. create a comp.
b. add a Layer, smaller than the comp. (e.g. 10*10 px)
c. Apply a huge magnification to the Layer (e.g. 10,000%)
d. Move the Layer so as to see it's edge.

The edges of the Layer all appear graduated. Almost like a glow. I was expecting clean, straight edges. The magnification should not introduce any distortion.

Is this a feature or a bug? And is there a way to prevent it?

Thank you.


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Dave LaRonde
Re: Why are graduated edges visible in hugely magnified layers?
on Jan 19, 2010 at 8:15:18 pm

This is a feature. Welcome to subpixel rendering, which has been part of AE since the application was invented by CoSA.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Tim Andrews
Re: Why are graduated edges visible in hugely magnified layers?
on Jan 19, 2010 at 8:58:35 pm

Many thanks to Dave for the explanation. I assume it affects the rendering of both Raster and Vector layers.


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Joey Foreman
Re: Why are graduated edges visible in hugely magnified layers?
on Jan 19, 2010 at 8:32:19 pm

You need to educate yourself on the difference between raster and vector-based images.

You can start here.

http://help.adobe.com/en_US/AfterEffects/9.0/WSFD576BBB-B11B-472b-971F-25CC...



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Todd Kopriva
Re: Why are graduated edges visible in hugely magnified layers?
on Jan 19, 2010 at 9:27:49 pm

There's more information about layer quality and subpixel positioning here:
"Layer image quality and subpixel positioning"

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Todd Kopriva, Adobe Systems Incorporated
putting the 'T' back in 'RTFM' : After Effects Help on the Web
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