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Olympus OM-D E-M10 IV review

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Olympus OM-D E-M10 IV review

The Olympus OM-D E-M10 IV is a compact, stylish and low-priced Micro Four Thirds camera with a 20MP sensor and in-body stabilization. Chris and Jordan put it through its paces in the latest episode of DPReview TV.

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7Artisans launches $130 APS-C 27mm F2.8 for Sony E mount

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7Artisans launches $130 APS-C 27mm F2.8 for Sony E mount


Image: 7Artisans

Chinese lens maker 7Artisans has announced the AF 27mm F2.8 prime lens for APS-C cameras using the Sony E-Mount.

The 27mm focal length gives a fractionally wide-angle ∼41mm equivalent field of view, while the semi-fast F2.8 maximum aperture should give some control over depth-of-field and better low-light performance than a kit zoom.

The compact prime consists of six elements in five groups. It uses a stepper motor and internal focus design, which is potentially promising in terms of autofocus speed. Unusually for a modern lens, it makes no use of aspherical, ED or other special glass, and features just six aperture blades.

The 48mm (1.9″) long, 173g (5.0oz) lens features a USB 3.0 socket on its side, allowing firmware updates. It has a minimum focus distance of 0.3m (11.8″) and accepts 52mm threaded filters. It is available immediately at a recommended price of $129.



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7Artisans launches $130 APS-C 27mm F2.8 for Sony E mount

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7Artisans launches $130 APS-C 27mm F2.8 for Sony E mount


Image: 7Artisans

Chinese lens maker 7Artisans has announced the AF 27mm F2.8 prime lens for APS-C cameras using the Sony E-Mount.

The 27mm focal length gives a fractionally wide-angle ∼41mm equivalent field of view, while the semi-fast F2.8 maximum aperture should give some control over depth-of-field and better low-light performance than a kit zoom.

The compact prime consists of six elements in five groups. It uses a stepper motor and internal focus design, which is potentially promising in terms of autofocus speed. Unusually for a modern lens, it makes no use of aspherical, ED or other special glass, and features just six aperture blades.

The 48mm (1.9″) long, 173g (5.0oz) lens features a USB 3.0 socket on its side, allowing firmware updates. It has a minimum focus distance of 0.3m (11.8″) and accepts 52mm threaded filters. It is available immediately at a recommended price of $129.



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7Artisans announces AF50mm F1.8 for Nikon Z mount

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7Artisans announces AF50mm F1.8 for Nikon Z mount


Image: 7Artisans

7Artisans has announced a version of its full-frame AF 50mm F1.8 lens for Nikon’s Z mount.

The lens, already available for Sony E mount, is 104mm (4.1″) long and weighs 421g (14.9oz).

Its optical formula is made up of 11 elements in 9 groups, including two aspherical, one ED and two high refractive index lenses. It features an 11-blade aperture diaphragm. It uses a stepper motor to drive an internal focus design.

Minimum focus distantce is 0.5m (19.7″) and it accepts 62mm threaded filters.

The company says it will be available soon at a price of $228.


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