Camera module with fast wakeup time

I am currently using a C328-7640 camera module controlled via a
ATmega16 micro.

The camera takes VGA color pictures and formats them into JPEG, its a
nice little unit
except that I need to put it into sleep mode and trigger it only when
I need a picture.

The issue is that after I place the camera into sleep mode it takes 2
to 3 seconds for it
to be awakened and be ready to take the next picture.

Does anybody know of a similar module with a faster wakeup time. I'm
not looking
for instantaneous time anything under .5 second range would work fine.

The objects are between 6 to 10 feet away.


thanks for any suggestions

Sal