It differs from its predecessor, the DP1x, because its lens now includes one "F" Low Dispersion glass element to correct aberrations, and its resolution has grown by moving from Foveon's 14.6-megapixel APS-C size image sensor to the 46-megapixel APS-C image sensor found in the company's flagship SLR, the Sigma SD1 Merrill.

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In addition to its use as a single instrument, the telescope is a key element of the UK's Multi-Element Radio-Linked Interferometer Network (Merlin) high-resolution radio-imaging array.

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The device crams that resolution into a 3.5-inch screen, which wouldn't be so bad if the capacitive touchscreen element wasn't so low-end.

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