PDA

View Full Version : Any protection mechanism on S2 IS lens motor against obstruction??


drwhite
07-25-2005, 09:17 AM
Thank you in advance for the replies.

Today while I was putting my Canon S2 IS into its case, it accidentally turned on inside the case. I immediately turned it off and took it out. I found out that the lens was able to protrude only 1/4 of the way, because it was obstructed by the case. I turned it on again and the lens protruded completely. Now it’s working flawlessly and there’s no problem. However I’m really concerned if the lens mechanism got any damage after this. Everything is OK but I’m a little bit obsessive about these kind of things and can't stop thinking. Is there’s any protection in the camera to prevent over-exertion of lens motor when it is obstructed? I'd feel very relieved if you answer me. Thank you again for the feedback guys.
cdifoto
07-25-2005, 09:30 AM
You have a warranty so don't worry about it! ;) :p
bluevolume
07-25-2005, 10:08 AM
The lens protruding while in a case is most likely something that Canon plans for in their development/testing of their cameras. The lens stopping at 1/4 is probably exactly what the camera was designed to do.

With the precision of the servos used to focus and zoom, the electronics in the camera could easily sense the restriction and shut it down.
ale_g
07-25-2005, 10:56 AM
:) I think that you might consider using a 58mm adapter and leave it always there with an UV filter attached.

Ale_G
drwhite
07-25-2005, 11:05 AM
The lens protruding while in a case is most likely something that Canon plans for in their development/testing of their cameras. The lens stopping at 1/4 is probably exactly what the camera was designed to do.

With the precision of the servos used to focus and zoom, the electronics in the camera could easily sense the restriction and shut it down.

Sigh...! Well, it was very relieving indeed. Thank you very much.
I was going crazy about the probablity that I damaged the USM lens. I was checking it continuously by turning it on and off or zooming in and out, to detect any mechanical abnormality or a weird sound. Nothing hopefully.

EDIT: This is the answer from Canon USA regarding my query about this matter:


If there is no error message on the LCD screen, and the camera operates, then it is OK. The camera will stop the lens from coming all the way out if there is force preventing it from fully extending.