Replacment lens for a Canon DR8090C - DR Canon Office Equipment & Supplies

Since I cannot see your pieces, I can recommend actual replacement. You can Google your camera's make/model with replace lens cover and pick from the listings. You can also go straight to Canon USA and search their store as they have replacement lens covers. I did this here for another customer as an example.
Lens Caps ' Canon Online Store shop.usa.canon.com/shop/en/catalog/.../ef-lens-accessories/lens-caps
Canon Tips & Tricks When using a lens with IS while on a tripod, ... Canon Tips & Tricks That hole in your battery cover has a purpose! ... Lens Cap 14mm f/2.8L II.

You can try doing a Google search for your camera make model. I did and found this - below.
btw - Canon is spelled with one "n" which might help in your search results. I'd go to canon usa and click on their link or search their store for your replacement lens cap. Different lenses have different sized lens caps, so be sure you have the right one.
Lens Caps ' Canon Online Store shop.usa.canon.com/shop/en/catalog/.../ef-lens-accessories/lens-caps
Canon Tips & Tricks When using a lens with IS while on a tripod, ... Canon Tips & Tricks That hole in your battery cover has a purpose! ... Lens Cap 14mm f/2.8L II.

It is probably a broken ribbon cable in the lens. It will need to be replaced.

Err30 indicates a problem with the camera shutter. Turn off the camera. Then remove the battery, take out the memory card, and then remove the lens. Clean the lens contacts and replace the lens (make sure that it is a Canon lens). Then replace the memory card and the battery. Then turn the camera back on.

If the error recurs, the camera needs service. Contact Canon.

I hope the problem is resolved by the above steps.

Cindy Wells

I'd say yes as the replacement cost for this lens would probably exceed the repair cost

Sigma makes their lenses with a variety of mounts. If the lens has a Canon or M42 mount then there is no problem. If it has a Minolta mount, for example, then replacing the lens will be easier and just as cheap as changing the mount. If it has Nikon mount, you can buy adapters to fit it to Canon or M42 bodies.

Sending it to an authorized cannon repair facility. the lens must be replaced.

The FT lens mount system (FL system) is not the same lens mount used on today's Canon EOS cameras (EF lens mount). The FT/FL system was used for a very short time in the 1960s, and was replaced by the FD lens mount system. Canon switched to the EOS/EF system in the late 1980s/early 1990s. So the lens will not fit on a Digital Rebel, and because it's 2 generations away from the lenses that do fit I don't think there was ever an adaptor made. Sorry!

Since the problem is limited to this lens, I highly doubt that you would have to replace the cameras AF sensors.
Since you only have the problem with this lens, I am afraid that you will have to get the lens repaired. Is the lens also 3 years old? Did you get it with MACK extended warranty?
Sometimes, Canon do these kinds of repairs for free, if they discover that there was some manufacturing error that caused it to fail. So be sure that you get it to a certified canon workshop. 
I hope this helps, 
/Chris

Trouble shooting Error 99

1. Solution: Remove and replace the battery.

Power the camera off

1. Remove the battery.
2. Wait 15 seconds.
3. Replace the battery.
4. Power the camera on.

2. Clean the lens contacts.

Clean the lens contects on the rear portion of the lens with a clean pencil eraser.

• Mount the lens on the camera.
  
• Take a picture.
  

If the error persists, the camera and/or lens may need be serviced by a qualified Canon Service Technician.


3. Remove the 3rd party accessory.
Please remove the 3rd party accessory and replace it with genuine Canon Accessory.


4. Solution: Remove third party lens and try with Canon EF or EF-S lens.
Remove third party lens and try with Canon EF or EF-S lens This link will bring you to the camera page on Canon's website: More trouble shooting, drivers and downloads http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=215&modelid=11154#DownloadDetailAct Best of luck. Could you please rate this advice. Thanks so much!