is interesting. Very shocking find, jitteringjr
One third of the Sigma 150-500 and 120-400 lenses we bought were defective out of the box and had to be exchanged
After reading this it looks like an authentic report of a real broad sample.
Top 5 spots for Sigma lenses, but Nikon is also up there with some lenses at 10-14% failure rate and the Nikon 70-200/2.8 VR having more than double the failure rate as the Canon equivalent.
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews
, My Pictures
, My Photography Blog