Canon is a Japanese multinational corporation and is best known for optical and imaging products. Their products include cameras, photocopiers, computer printers and steppers. Canon comes with a high popular lens having great exterior design called Canon EF 28-105mm f/3.5-4.5 II USM SLR (Single Lens Reflex) Lens.
Canon EF 28-105mm f/3.5-4.5 II USM includes a ring type USM which offers silent operation, high speed focusing and full time manual focusing. The lens gets constructed with a combination of 15 elements in 12 groups. The dimension of the lens is 75 x 72 mm (3 x 2.8 inches) (Length x Diameter). The lens aperture contains five aperture blades. The lens provides angle of view at 23 degrees to 75 degrees. The closest focusing distance of the lens is 0.5 m (1.6 feet).
The lens has a compact design and is good for ELAN 7N/7NE with built-in flash. It provides excellent zoom at wide range. The zoom system is rotating type. It has a decent build quality. The lens maximum and minimum apertures are f/3.5 and f/27 respectively. The focal length of the lens is 28 mm to 105 mm. The lens has an EW-63II lens hood. The maximum magnification ratio of the lens is 1:5.3. The filter size will be 58 mm. The diaphragm blade in the lens is seven.
The front element of the lens does not rotate so polarizing can be used without any problem. The field of view horizontal, vertical and diagonal at full frame (36 x24 mm) will be 65.5, 46.4 and 75.4 degrees (at wide end) respectively and 19.5, 13 and 23.3 degrees (at tele end) respectively. At APSC, the field angles (horizontal, vertical, diagonal) will be 43.8, 30 and 51.6 degrees (at wide end) and 12.2, 8.2 and 14.7 degrees (at tele end).
The contrast and sharpness are excellent throughout the zoom range. It has a good focal length and a nice aperture which provides brighter indoor view of the subject. The lens shows some barrel distortion at 28 mm and a slight pincushion distortion can be seen at long end. At 40 mm, the lens has a negligible level of distortion. The chromatic aberrations (CA) are not a problem with this lens.
EF 28-105mm f/3.5-4.5 II USM weighs 375 grams (13.2 ounces). The lens is easily interchangeable and provides consistent output. The lens is very light in weight and is easy to handle. The lens is quite handy for outdoor events and also for landscapes. This lens is a solid performer and a very useful lens for the photographers.
Mon, 08 Feb 2010 18:37:47 +0000
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