> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Monday, March 06, 2006 9:57 AM > To: [email protected] > Subject: Re: EOS 20D Woes > > > ----- Original Message ----- > From: "Tom Pfeiffer" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Monday, March 06, 2006 10:12 AM > Subject: RE: EOS 20D Woes > > > > For me, an Error 99 usually means a problem communicating > with the lens. > > The > > four most likely causes: > > > > 1. dirty lens/camera contacts or lens not completely locked > into place. > > Lens was on fully- will check the contacts. But this camera > was just back > from CPS. > > > 2. non-Canon lens that's not 100% compatible (Sigma, > Tokina, Vivitar, > > Phoenix, Quantaray) > > Only Canon glass in the bag and on the bodies. > > > 3. battery grip not fastened ticghtly enough or an > original, unmodified > > 20D > > grip. > > This is the reason that I took the filp bracket off- Did > check this and it > was tight. With the off set tripod mounting it does want to loosen. > > > 4. a problem with the AF motor or helical assembly in a > canon lens causing > > a > > bind at some point in the focus range. > > Happened with both 16~35 and 28~70 and they seemed to focus fine. > > > > Tom P. > > > Thanks Tom Good info. > Cheers Wilber
Were you using a grip? If so, there's a known issue with the earlier versions having anough flex in them (especially with a long lens or flash bracket) to cause the grip to lose contact with the body. the newer grips have a stronger batter door (of all things) and there's a colored dot on the inside of the battery door. If yours is one of the early ones, it's a free fix from Canon, either a service center or CPS. Tom P. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
