Originally posted by awaldram Bear in mind in the UK if you can prove a device has a manufacturing defect it has a 6 year warranty (fit for use) I successfully persuaded Pentax to replace my 5 year old 50-135 when the SDM failed.
Just to clarify that this isn't really a 6 year warranty. First the onus is on you, the buyer, to prove that any failure is due to an inherent fault that was there at the time of purchase. You also have to prove that you would reasonably expect the item to last more than 6 years. Assuming you can prove both these things you are only entitled to damages, i.e. a notional amount based on price paid less value of benefit received.
So in this case, Pentax were being generous as they were not required to replace. All they had to do was make an offer - probably the price of a second hand replacement or maybe the cost of repair.
Notwithstanding the the various hoops the buyer must go through, it's still a whole deal better than "Tough!" but it isn't what most folk think of as a warranty.