EXCERPT page containing first few paragraphs. 2018-10-15 21:56:30
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The Pentax K1 (and K3 II) record all four shift-variant exposures into a single DNG files. Each exposure is 14 bits so each pixel has 56 bits of data: 14 bits for red, 14 bits (twice) for green, 14 bits for blue.
The images should be incredibly detailed, quite likely beyond even what a Canon 5DS R can deliver.
With 56-bit pixels (14 bit X 4), 14-bit raw files of data size of ~255MB megabytes should result, a bit larger with an embedded JPEG preview and metadata, perhaps 260MB.
Compression is used and appears to be lossless (waiting for confirmation). According to Alex Tutubalin of RawDigger:
According to DNG specs, lossy format is allowed only for 'linear /demosaiced/ 8-bit data' (so called Lightroom 'fast load proxy DNG' for faster editing in low res, than apply edits to full-res file).
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