Source CR:
"The new 18-megapixel full-frame CMOS sensor utilizes large pixels – 1.25 microns larger than those in the EOS-1D Mark IV sensor and .55 microns larger than those in the EOS 5D Mark II sensor – together with gapless microlenses to achieve enhanced light gathering efficiency, higher sensitivity and less noise at the pixel level."

Ça donne envie! Vivement que ses petits frères arrivent sur le marché...