|Canon EF-S 18-55mm f/3.5-5.6 IS Specifications|
|Lens Construction (groups)||9|
|Lens Construction (elements)||11|
|No. of Diaphragm Blades||6|
|Closest Focusing Distance||0.25m (9.8")|
|Maximum Diameter x Length||68.5mm x 66mm (2.7" x 2.6")|
The resolution capabilities of the Canon EF-S 18-55mm f/3.5-5.6 IS is amazing even based on the EOS 50D. The lens resolution may no longer reach the limits of the sensor resolution (as it did on the EOS 350D) but the quality level remains very high throughout the zoom range. Even more surprising is the evenly high corner to corner performance.
For the entry-level Canon shooter, the EF-S 18-55mm IS f3.5-5.6 IS provides an affordable way to gain image stabilization, which is built into the bodies of entry-level dSLR systems from companies such as Sony, Pentax, and Olympus. Its strong image quality makes it a good option for more advanced Canon shooters who desire image stabilization at an affordable price.
The image-stabilised 18-55mm gives a good account of itself in our tests, and is clearly much improved over the old kit lens which we've grown to know and not quite love over the last few years. It distinctly outperforms the more expensive 17-85mm at wide angle, and matches it over most of the rest of its range; however this is tempered by a slightly disappointing performance at telephoto.
For the money, the Canon EF-S 18-55mm f/3.5-5.6 IS Lens performs very well optically. From 18mm through 35mm or so, center sharpness is reasonable wide open and reaches its optimal sharpness at f/5.6. Corners in this focal length range are relatively sharp. Wide open center-of-the-lens performance remains similar throughout the focal length range until the long end where this lens becomes soft.
However they've done it, the 18-55mm ƒ/3.5-5.6 IS shows excellent sharpness at 18mm wide-open at ƒ/3.5, a focal length/aperture combination which typically shows off the weakness of most consumer-grade lenses. Image sharpness is essentially even across the frame, and doesn't exceed 2 units on our scale of 1-12. For a lens of this price point, this is amazing performance.