A388 From Netherlands Antilles, joined May 2001, 10780 posts, RR: 15 Posted (9 years 1 week 6 days 16 hours ago) and read 1638 times:
I went out for some aircraft photography yesterday when I got the Err 99 on my display. After taking out the memory card it worked again but later the same thing happened again. I changed memory cards and lense and it worked again but it still happens. Is this a serious problem? When I take out the memory card and put it back in it works fine but has happened several times now.
Anyone who has had the same problem and how was it fixed? I hope it is not something serious as I will go to AMS next month and can't afford to fix it right now as it takes months to fix (we don't have a camera store here that can fix these cameras and it has to be send abroad)
A388 From Netherlands Antilles, joined May 2001, 10780 posts, RR: 15
Reply 2, posted (9 years 1 week 6 days 14 hours ago) and read 1618 times:
Quoting KMB (Reply 1): Error 99 is usually down to lens communication failure, do you have another lens to try?
Hi, yes normally use my EF75-300mm 1:4.-5.6 lense which is about 6 years old. My newer lense (EF90-300mm 1:4.5-5.6 USM) I don't use much as the photos come out softer. So does this error have to do with my older lense? Is 6 years old for such a lense?
KMB From , joined Dec 1969, posts, RR:
Reply 8, posted (9 years 1 week 5 days 23 hours ago) and read 1563 times:
If it was a Sigma they are reverse engineered and error 99 is a common problem with older Sigma lenses which are fixed by a re-chip. I am not sure of issues with the Canon but check for dirty contacts, and try shooting using manual focus to see if you can rule out the focus motor. I would also suggest a call to Canon and have your lens serial number to hand.
I was told by Canon Tech that error 99 is a communications problem and usually but not always down to the lens.