Sony A55 and A33 digital cameras with Pellix design to be unveiled in September

June 2, 2010, By Sanjeev Ramachandran

Sony will display two cameras called A55 and A33 built using the new Pellix design, for the first time at the Photokina event to be held in September, according to a rumor. The Pellix design employs a semitransparent mirror as well as a fixed mirror.

The design will increase the contrast autofocus capability of a camera to higher speeds as compared to existing DSLRs with HD video recording capability. It also increases the overall quality of the video and will enable the A55 and A33 to have the fastest autofocus speeds on a DSLR capable of video recording.  The APS-C sized sensor that is present on the Sony NEX-3 and NEX-5 cameras will also be a part of the A33 and the A55.

The sharpness of the images taken using a Pellix-design-based camera is increased due to the fixed mirror that is part of the design and the camera operation is also more silent. The fixed mirror also allows for pictures to be taken at higher speeds of up to 10 frames per second. The A33 and A55 cameras have also been reported to have video recording feature in the 24 Mbps AVCHD format. Videos of up to 1080p can be shot on the A55 whereas the A33 can shoot videos in 720p. The new cameras from Sony will also be priced lesser than the existing cameras in the DSLR lineup.

However, there is also an estimated exposure loss of 1/3 value in the Pellix design. This is due to the division of incoming light into two parts, which are directed to the phase detection sensor and the main image sensor.

Cameras featuring the Pellix design have been developed and displayed by Canon as well. However, they were film based cameras and not digital cameras.

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