Announced alongside the EOS 700D is the EF-S 18-55mm kit lens. With the camera itself offering little to distinguish itself from the EOS 650D, the option to buy the 700D with the new, stepper-motor-driven 18-55mm STM lens stands out as its main attraction. The lens offers better movie focusing and up to four stops of image stabilization, along with a close focusing distance of 0.25m and a circular seven-bladed aperture. An internal focus design means the lens does not extend when focusing. Optical performance remains essentially on par with its non-STM.
The STM designation is of particular interest to video shooters as it has the potential for quiet autofocus and improved AF speed. Those familiar with using just about any camcorder are accustomed to smooth and reasonably accurate autofocus, while the average SLR focuses slowly (indeed previous Rebels only focused when prompted by the user). Because an SLR can’t use its phase-detect sensor while in Live View and video modes, the camera is usually left to struggle with contrast-detect autofocus. And, because non-STM lenses aren’t designed with this focus method or for this purpose, the results were often jerky shifts in focus with focus motor noise audible on the video’s sound track. Older Rebels were even known to gain up exposure during video if you asked them to focus.
The 700D is also available bundled with the EF-S 18-135mm f/3.5-5.6 IS STM, which offers an extended zoom range at a higher price. Canon’s only other SLR lens with an STM motor is the EF 40mm F2.8 pancake. All are designed to take full advantage of the Hybrid AF system found in the EOS 650D, 700D and 100D, with quiet autofocus, helpful when shooting video, and full time manual focus.
Canon Digital SLR Camera EOS 700D ,18MP, CMOS Sensor with 3 inch LCD in