[magick-users] an enigma with "-size"

[paweł wolański]

Hello!
First I want to thank you Gabe Schaffer and Anthony Thyssen for help to 
choose proper Imagemagick's version.

I've got another question. I'm working for website which converts 
thousands of pictures (about 40k) per day. We chose IM for managing of 
conversions. We noticed, that the most time is taken by resize of 
pictures. We made some test and:

convert a.jpg -resize 200x b.jpg
vs.
convert -size 200x a.jpg -resize 200x b.jpg

(notabene: a.jpg is a large picture)
the second one is 10 times quicker than first. Could anyone explain that 
and using -size, please.

Or.. what are possibilities for time optimizing for resize down pictures .

Thank You in advance.

-- 
Paweł Wolański
Medousa sp z o.o. www: http://www.medousa.pl