17-55/2.8 IS aperture problem giving Err 99

[yanyewkay]

After clicking the shutter button, the camera body gives error 99 and the viewfinder will be very dim, on checking the aperture is shut down to a tiny hole, something like f/16 or 22, even though my setting was f/2.8 or 4. Happened many times, in different scenarios like outdoor and indoor aircon. So I ruled out temperature. I have also never dropped, abuse or rough-handled the lens.

Also, the IS seem to vibrate non stop sometimes. By vibrate I mean really shake non-stop for up to 10-20 seconds. The whole viewfinder is like in an earthquake.

Standard treatment of cleaning contacts was also done with no help.

Anyone have the same problem and got a workaround? I'm stopping short of sending to Canon Service Centre because I don't have the time and I need my lens almost every few days.

[F5user]

last i heard of the same occurance on a 24-105, it turned out to be a problem with the main board on the lens. (CSC + 1.5 wks.)

sorry to hear about this.

[unseenshadows]

Sounds like it needs CSC. Better send it in. Is the lens still under warranty?

[ozora]

I had a similar problem of error 99 on my 17-85mm IS lens recently. Sent to CSC to repair. Prob is due to diaphragm faulty according to canon. Cost me 120 bucks to fix it.

[Roasty]

same issue i had with my 17-85 IS USM. it only happened between 17-24mm. CSC replaced diaphragm for me. also 120bucks. the break down.. $24 for diaphragm assembly, the rest for service charge. :P

[xtremequantumx]

but isn't it a manufacturer fault? why does csc charge you for their mistake? hmmms.

[adamadam]

Originally Posted by Roasty same issue i had with my 17-85 IS USM. it only happened between 17-24mm. CSC replaced diaphragm for me. also 120bucks. the break down.. $24 for diaphragm assembly, the rest for service charge. :P

Mine is at CSC right now for this issue.

[Wibblo]

as previously reported, my 17-85 came up the same error exactly one month after purchase..CSC changed the whole shutter unit for free

[swishbrade]

Originally Posted by yanyewkay After clicking the shutter button, the camera body gives error 99 and the viewfinder will be very dim, on checking the aperture is shut down to a tiny hole, something like f/16 or 22, even though my setting was f/2.8 or 4. Happened many times, in different scenarios like outdoor and indoor aircon. So I ruled out temperature. I have also never dropped, abuse or rough-handled the lens. Also, the IS seem to vibrate non stop sometimes. By vibrate I mean really shake non-stop for up to 10-20 seconds. The whole viewfinder is like in an earthquake. Standard treatment of cleaning contacts was also done with no help. Anyone have the same problem and got a workaround? I'm stopping short of sending to Canon Service Centre because I don't have the time and I need my lens almost every few days.

how old is your lens?

[tUx]

Hey bro.. Can rush CSC to do the job within either

1) the same working day, or
2) within a few working days (confirm less than a week),

but the charges is around $50 at least for doing so if my memory doesn't fail me.

[Fragnatic]

under warranty still must pay ar?

[tUx]

Originally Posted by Fragnatic under warranty still must pay ar?

Yah.. If you need the rush job

[Fragnatic]

Originally Posted by tUx Yah.. If you need the rush job

lol... i see.

so if under warranty, and dun mind leaving it there, it's free?

hmm.. seems like the 17-85 has the same prob too? mine's ok. hope i dun have to visit CSC for this prob.

[tUx]

Originally Posted by Fragnatic lol... i see. so if under warranty, and dun mind leaving it there, it's free? hmm.. seems like the 17-85 has the same prob too? mine's ok. hope i dun have to visit CSC for this prob.

Normal service job if lens under warranty is free...

Well, my friend's 17-85 had this problem. Aperture jam also. Sent to CSC.

[yanyewkay]

Originally Posted by swishbrade how old is your lens?

just over a year old sadly..

[yanyewkay]

Originally Posted by ozora I had a similar problem of error 99 on my 17-85mm IS lens recently. Sent to CSC to repair. Prob is due to diaphragm faulty according to canon. Cost me 120 bucks to fix it.

$120 sounds 'ok' aiz.. looks like i got to rent/borrow a lens in the mean time.

[yanyewkay]

still didn't have time to send this in for repairs... anyway, I've sort of found a way 'around' the err99
whenever it appear, all I need to do is
turn off the cam,
turn the zoom ring, zoom in and zoom out..
turn on cam do 1 test shot.

solve the err99 most of the time.. not 100% cure though..