Question about Canon EF-S 17-55 f/2.8 IS USM Lens
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Posted on Jan 02, 2017
SOURCE: Autofocus gives erratic results
Are you using this indoors, in low light perhaps? This would be the most common reason for this happening. The only way to get around that is to use a "faster" lens, such as f2.8 / f1.8 / f1.4 etc.
If not, try cleaning the lens and camea contacts with a plastic eraser, make sure no debris falls in the camera body (hold upside down for this).
Posted on Jun 02, 2009
HI I AM SAGHA FROM MUMBAI.ACCORDING TO ME WHAT MOTOR LIKE SOUND YOU HEAR IS OF IMAGE STABILISER MECHANISIM AND IT IS QUITE NORMAL YOU SHUT DOWN YOUR I S & WON'T HEAR ANYTHING ALL THE BEST
Posted on Jul 12, 2009
A Canon camera mechanic told me that on the 40D this is caused by the rubber part under the shutter button not springing back quickly enough, at least that was how he described it. It's a simple matter for a camera tech to fit a new one. I go to Whiltons Camera Service in Elizabeth St. Sydney. I've been going there for about 25 years and they are the best I know of.
Posted on Dec 19, 2009
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