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If the lens will focus on manual focus but won;t on auto focus you may have a ribbon connector failure in the lens. This ribbon continually flexis as the lens moves in and out. Over time this can break and will probably need to be replaced. All good camera repair shop should be able to do this for you and this remady is one of the cheaper repairs to photographic equipment
You focus on the reticle with the eye focus ring. You need a parallax adjustment ring to "focus" a scope. Your scope does not have this feature. Are you trying to use it at a very short distance?
When the camera is set to autofocus, let the camera do the focusing. If you want to focus manually, turn off the autofocus so you can turn the focusing ring.
First off, try gently turning the focus ring on your lens while it is on auto focus mode (DO NOT force it). Sometimes a minor bump on the lens can cause the focus ring to come off the tracks. Try that and see if the lens start auto focusing again. I find that this solves the issues a lot of the time. If that doesn't give you any results then you'll need to take your lens to an authorized Canon service center for repairs. Hope this helps!
Hiram Photo Tech Repair Service 110 East 13th Street New York, NY 10003 212-673-8400
This error indicate that focusing ring got stuck or jammed. What you can try to do is spray some compressed AIR into the lens to try to free up any sand or dust that may have worked its way in. If that doesn't help, you can gently bump the camera to try to free the focusing ring.
or....... You can try to turn camera ON at the table (facing it to the ceiling), don't put camera down face to the floor when opening. Else your camera need to be disassembled to get at the focusing ring at Service Center. Good luck and have a nice day. Rating the solution is highly appreciated.
This error indicate that focusing ring got stuck or jammed due sand, dust or may be due to external shock caused by dropping the device.
Try compressed air. With a fine tip blow off gun around lens barrel. It should remove all dust and sand. Turn the camera on this will solve the problem.
You can gently bump the camera to try to free the focusing ring.
You can try to turn camera ON at the table (facing it to the ceiling), don't put camera down face to the floor when opening.
If motor is running but lens won't retract sometimes lens would slip off with the gear or break off a tooth in the gear when it gets dropped. Try to gently move the lens barrel around with the finger and see if it is moving, but if tooth or gear is broken lens will move once or twice then it will stuck again.
Else your camera need to be disassembled to get at the focusing ring at Service Center.
Canon E18 error shows when the lens gets stuck while trying to extend.
This error indicate that focusing ring got stuck or jammed due sand, dust, may be due to external shock caused by dropping the device. try compressed air. With a fine tip blow off gun around lens barrel. It should remove all dust and sand. Turn the camera on this will solve the problem.
You can gently bump the camera to try to free the focusing ring.
You can try to turn camera ON at the table (facing it to the ceiling), don't put camera down face to the floor when opening.
If motor is running but lens won't retract sometimes lens would slip off with the gear or break off a tooth in the gear when it gets dropped. Try to gently move the lens barrel around with the finger and see if it is moving, but if tooth or gear is broken lens will move once or twice then it will stuck again.
Else your camera need to be disassembled to get at the focusing ring at Service Center.
Turn the aperture ring to its smallest setting (largest f/number). You control the aperture from the camera body, as on a lens without an aperture ring. Turn the mode dial to M (manual). The camera's exposure meter will not work with this lens. You can use another lens to get an approximate exposure, or take pictures and review them and/or use the histogram to fine-tune the exposure. The camera won't autofocus, of course, but the in-focus indicator in the viewfinder will still light up to indicate proper focus.
turn the 'lock/friction ring' (metal band just below the black rubber focusing ring) counter clockwise whilst holding the focusing 'ring' still. The friction/lock ring is used to prevent 'lens creep' when carrying the camera with lens pointing down, or using the lens when it is pointing down. Juust turn it until it applies the level of friction you prefer for operating the lens. If you have already tried this and it won't budge it may be the bearings are shot and you will need to contact a canon service centre for repair.
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