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Canon has announced plans to release two 50-megapixel DSLRs, slated to go on sale in Australia in June 2015. While the EOS 5DS and the EOS 5DS R are essentially the same camera, the 'S' has an optical low-pass filter to reduce moire, making it better suited to general photography, while the 'S R' has a self-cancelling filter to optimise resolution for applications such as landscape photography.

The new models will be sold alongside the EOS 5D MkIII, and positioned in the EOS range between the 5D MkIII and the 1DX. Like those models, the 5DS and the 5DS R are built around a full-frame 36 x 24mm CMOS sensor, though with upgraded   dual Digic 6 image processors to handle the greater throughput from the higher-resolution sensor.
 
Recognising that not all photographers will want to shoot at the cameras' 50-megapixel resolution all the time, there are three new in-camera-crop shooting modes – 1.3x, 1.6x and 1:1. Set to the 1.6x crop mode, the camera produces 19 megapixel images.

The main body shell is constructed from magnesium alloy, with weatherproof seals making the camera dust and splash resistant. Dual slots can accommodate one CF and one SDHC/SDXC memory card, with the camera able to shoot continuously at up to five frames per second (fps) for up to 510 JPEGs or 15 RAW files.

Like the 5D Mark III the new models use a 61-point AF system with 41 cross-type sensors and a 150,000-pixel, 252-zone metering sensor.The viewfinder provides approximately 100 percent field of viewand can display crop frames and a customisable selection of camera settings and data.

To reduce image blur in slow-shutter-speed images, Canon has redesigned the mirror system to help reduce mirror slap, and reinforced the chassis, baseplate and tripod lug to improve rigidity.

Despite the 5DS and 5DS R's extensive feature list, the 5D Mk III still has some advantages over the high-resolution models, including a higher maximum ISO (25,600 compared to 6,400) and better video options with ports to output clean video via HDMI and connect headphones.

Also announced along with the new cameras was the EF 11-24mm f/4L USM lens, which Canon says is the world's widest-angle rectilinear zoom lens. It is expected to go on sale in March.





















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