Canon EF 28-105mm lens

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The Canon EF 28-105 mm f/4-5.6 is an inexpensive zoom lens often included as a kit lens with Canon 35 mm single-lens reflex cameras. 28-105 mm is a standard wide to telephoto zoom range. The Canon EF 28-105 mm f/3.5-4.5 USM is a higher quality zoom lens with a better build quality.

[edit] EF 28-105mm f/3.5-4.5 USM

This lens is a well-regarded consumer-grade lens. Its focus motor is ring USM, resulting in quick and quiet autofocus operation; this motor also allows the lens to offer full-time manual focusing.

There are three versions of this lens. The original lens has a five-blade diaphragm. Partway through its production run, this was replaced with a seven-blade diaphragm; however, contrary to normal Canon practice, the name of the lens was not changed. The third version, the EF 28-105mm f/3.5-4.5 USM II, is a cosmetic change. Apart from the diaphragm, all three versions have identical optics and mechanics.


[edit] EF 28-105mm f/4-5.6 USM

This is an inexpensive lens, comparable to the 28-80 and 28-90 kit lenses but with increased reach on the telephoto end. The motor used is micro USM.

[edit] Specifications

Attribute 4.0-5.6 3.5-4.5
Image stabilizer No No
Ultrasonic Motor Yes Yes
L-series No No
Diffractive Optics No No
Macro No No
Maximum aperture f/4.0-5.6 f/3.5-4.5
Minimum aperture f/22
Weight 210g 372g
Diameter 2.6" 2.8"
Length
Filter diameter 58 mm
Horizontal viewing angle
Diagonal viewing angle
Groups/elements 9/10 12/15
# of diaphragm blades 6 7
Closest focusing distance 1.57' 1.6'
MSRP $ $140
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