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Olympus Zuiko AF Zoom 35-70 mm f/ 4 Lens

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Olympus Zuiko AF Zoom 35-70 mm f/ 4 lens

Olympus Zuiko AF Zoom 35-70 mm f/ 4 lens

Olympus Zuiko AF Zoom 35-70 mm f/ 4 lens

Olympus Zuiko AF Zoom 35-70 mm f/ 4 lens

Olympus Zuiko AF Zoom 35-70 mm f/ 4 lens

Optical design

Olympus Zuiko AF Zoom 35-70 mm f/ 4 optical design

Format: 35mm SLR

Type: Zoom lens

Focusing: Auto Focus (AF)

Lens mounts: Olympus OM

First year of production: 1983

Optical design: 9 elements in 8 groups

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Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
35mm - 70mmf/4.0f/2260.7555550/19,477/3

Additional information:

The Olympus Zuiko AF Zoom 35-70 mm f/ 4  is a lens with a built-in automatic focusing. The Zuiko AF Zoom was designed for the Olympus OM camera and it was issued together with  the OM-30 camera, which was sold under the trademark  Olympus OM-F.

As different from competitors, focusing detector of the Zuiko AF Zoom was phase, the image came to it through  a beam-splitting prism It is not only made focusing more accurate, but also it enabled a photographer to be sure that the Olympus Zuiko AF Zoom 35-70 mm f/ 4 focuses at the chosen subject.

Indeed, additional prism did not make image quality better, but the possibility of 'real' (including AF tracking) autofocusing  on a non-autofocus camera was worth the effort.


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Posted by: nukemall   Date of publication: 06.03.2011


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