> -----Original Message----- > From: Rob Brigham [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, November 20, 2002 7:22 AM > To: [EMAIL PROTECTED] > Subject: RE: New 100-300/4 and 28-70/2.8 lenses from Sigma! > > <Much snipped> > > > And the fact that you have a motor in every lens waiting to > go wrong rather than just one in the body. Intesresting > thought - which is more reliable/durable system? Does it > mean that you should take backup lens rather than or in > addition to backup body? If the lens motor fails, you can still focus manually, and you regain AF when you change lenses. If a body motor fails, you lose all AF capability but, of course, you can still focus manually. I wouldn't want to guess which is the more reliable or durable. Some makes of AF cameras have an AF motor in the body and can also use lenses with built-in AF motors.
Len ---
