Characteristics and usage notes for EF-S 18 -135 mm F 3.5- 5.6 IS STMID : 8201556800 _ EN _ 1 Solution The Canon EF-S18-135mm f/3.5-5.6 IS STM lens is a high-performance highmagnification zoom lens equipped with an Image Stabilizer, and has been developed for digital SLRs compatible with EF-S lenses.
The Canon EF-S18-55mm f /3.5- 5.6 IS STM and EF-S18-135mm f /3.5- 5.6 IS STM lenses are high-performance high magnification zoom lenses for use with EF-S lens compatible Digital SLR cameras*. They are equipped with Image Stabilizers, and have been developed for digital SLRs compatible with EF-S lenses.
The lens focus mode switch is set to <MF> If the lens focus mode switch is set to <MF>, the AF mode can be selected, but the autofocus will not operate. Set the lens focus mode switch to <AF>. An extender (sold separately) is used If a separately-sold extender is used together with a lens whose maximum lens aperture value is f / 5.6 or higher, the autofocus will not operate.
You image can become blurred if the shutter speed is to slow. For example, if your camera says that the proper exposure would be f / 5.6 @ 1/30 of a second, then you would be able to increase your shutter speed to 1/125 of a second @ f /2.8. The rule of thumb to follow is: take the reciprocal of the focal length being used.
