Yes the E-P3 is hugely lighter and more compact!:tongue: First time I've ever held an EOS 1 series, and with a L series 24-70 f2.8 zoom. Awesome chunk of camera and glass - and awesome weight and size! I don't think I'd be able to handle one for an entire wedding, let alone two like some pro's do. Took about 30-40 shots at a party for the owner - who was looking a little enviously at my diminutive Oly. The E-P3 was a mere feather in comparison - and all the more appreciated for it now!