Male porownanie z 24-70 f2.8L

24-70L

Weight: 950g (Heavier)
Lens Construction : 16 elements in 13 groups
Diameter x Length (mm): 83.2 x 123.5 mm (Bigger)
Maximum Aperture: f/2.8 (Faster)
No. of Diaphragm blades: 6 (Less Blades??)
Closest Focusing Distance: 0.38m (Can focus Closer)

24-105L/IS

Weight: 670g (Lighter!!!)
Lens Construction : 18 elements in 13 groups (More Glass inside for the IS i think)
Diameter x Length (mm): 83.5mm dia. x 107mm (Slighter Thicker but shorter by 2cm)
Maximum Aperture: f/4 (Slower)
No. of Diaphragm blades: 8 (More Blades!!! Circular Too like the 70-200 IS)
Closest Focusing Distance: 0.45m (focus further)
Inner Focusing!!!!, no retracting front element!!!