After thorough investigation, we have ascertained that some APO 50-500mm F4.5-6.3 DG OS HSM, APO 120-400mm F4.5-5.6 DG OS HSM and APO 150-500mm F5-6.3 DG OS HSM lenses, produced recently, may have a potential autofocus defect.
More on http://www.sigma-photo.co.jp/english...nfo_100616.htm
I'd look into that if you recently bought one of these.
anyone know the best north american site to send in for repairs? mine falls into the need for repair.
I FILLED OUT THE ON LINE FORM I will wait to hear
THanks for the link and info - a great service to those with these lenses.
Just to add here for what it's worth. I have owned 2 Sigma tele lenses in the past and both fell apart in some fashion well before their time IMO!
I think those lenses perform well as far as image quality but fall short on lasting, also when is time to trade in you won't get much for them which is a point in considering when making the initial decision !!
After owning 4 different (replaced by repair dept for faulty focus) 50-500 Sigma Lenses, which I traded for a 70-200 macro by Sigma..losing lots of cash in the process...now they decide there's a problem with the lenses..:(
This is from http://www.lensrentals.com/
It is an older article but still worth a read.
Just looking quickly they still are renting several Sigma lenses.
http://www.lensrentals.com/news/2009...repair-data-30
Bill
I sent my lens 50-500 into sigma in NY for repair, was told today they are waiting for parts from Japan and I should have my lens in 2 weeks.
BTW a lot of auto focus sigma lenses are now on backorder
