Canon EF 28-80 f/ 3.5-5.6 USM Lens
全幅镜 首批版 用料优 光学性能最佳
環型 Ultra-Sonic Motor 可方便全時手動微调焦距。無需调A/M开关
Format: 35mm SLR
Type: Zoom lens
Focusing: Auto Focus (AF)
Lens mounts: Canon EF, EF-S
First year of production: 1991
Optical design: 10 elements in 9 groups
Features: Ultra-Sonic Motor
Specifications:
Focal length 28mm - 80mm
Max. aperture f/3.5 - f/5.6
Min. aperture f/32
Blades 5
Min. Focus (m.) 0.5
Filter Ø (mm.) 58
Weight (gr/oz) 330/11,6
Length (mm/in) 77.5/3,1

Additional information:
The Canon EF 28-80 f/ 3.5-5.6 USM is the first version of a low-end kit lens with a 28-80 mm variable focal length for Canon EOS film and digital SLR cameras.

Canon issued five variants of the lens, each of which had two versions: with and without USM.

This first variant of the lens is considered to be the most successful. Its optical scheme had never been borrowed by the lenses of this series.

Mechanical quality 3.33
Optical quality 4.33
Usability 4.00
Pricing / Value 4.00
Bokeh 3.00
Overall lens rating 3.73

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lens clean
后镜在某角度见到后镜镀膜有很多小点。实影相不見有何不同。