![]() ![]() While we've yet to run this newer version through our testing process over at, the preceding lens was quite impressive when compared to those bundled with Rebel cameras preceding the XS, yielding improved sharpness and reduced chromatic aberration. A lens hood and soft case are optional accessories. The lens has a MSRP of US$199.99 if bought separately, but costs significantly less when purchased bundled with the camera. ![]() Dimensions are 84.5mm long with a 68.5mm diameter (3.3 x 2.7 inches), and weight is 200g (7.1 ounces). Other specifications include a 6-bladed (rounded) diaphragm, minimum aperture of f/22-f/32, maximum magnification ration of 0.28x (or 1:3.6), and 58mm filter threads. The EF-S 18-55mm II uses a micro DC motor for autofocus, instead of the ultra-sonic motor found on models with the USM designation, and includes both an AF/MF switch and a Stabilizer On/Off switch on the lens barrel. This lens is constructed of 11 elements in 9 groups, and extends during both focus and zoom operation. The lens has a 3.1x zoom ratio, and a 35mm equivalent focal range of 29-88mm due to the T3i's 1.6x "focal length crop" (see below). Compared to the earlier EF-S 18-55mm f/3.5-5.6 IS version, that lens has cosmetic changes and uprated stabilization algorithms said to be good for a four stop improvement, but we believe it to be optically similar to the earlier model. One is an updated variant of a lens first introduced with the Rebel XS, now known as the EF-S 18-55mm f/3.5-5.6 IS II, which also ships with the Rebel T3 and T2i. The Rebel T3i kit is available with two lens choices. ![]()
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