leftj wrote:
If it makes you happy that's fine. I'm the kind of guy that if I spent upwards of $4,000 on the camera I wouldn't think twice on spending $249 for the grip just to keep the system pure. Now as far as lenses go, that's a different story. I don't have to buy Canon lenses if a third party lens suits my needs better.
Lens, grip, battery, flash, filters, ...
"Pure" is relative and a state of mind.
Seems like one would purchase <brand> lenses to keep the "system" pure.