Apple article on working with quartz composer

[ping141]

I am interested in feedback from users on Quarts composer. What are the best applications and what is the ease of use?

We use Quartz a lot on live video things. It´s good for heavy effectwork on live video, and also rendering thin sharp lines that react to sound etc. For example here:
http://www.bvlk.com/page5/page5.html
http://www.bvlk.com/page15/page22/page22.html
http://www.bvlk.com/page15/page6/page6.html
http://www.bvlk.com/page15/page2/page2.html

Also, you can relatively easy build custom video filters for use with VDMX etc.

Ease of use... None. It´s a bit bulky to use (maybe not if you´re used to MAX), but on the other hand it´s quite easy to understand the main principles and get started with.

We have not used Quartz things through Catalyst though, but I´ll look into it whenever I find the time.