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Forum: Pentax K-1 & K-1 II
03-23-2016, 12:10 AM
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Because they are not compressed like jpegs and contains 14bits for every pixel.
The theoretical maximum of RAW files for this sensor is 60MB ( 7360 * 4912 * 14 / (1024 *1024 *8) ), but for a clean image with low ISO it is usually around 70-75% (applicable to any Pentax camera).
I'm not sure but I don't think that Pentax embedded jpeg for previews in their raw files.
DNG format also has a little overhead because it actually encapsulates native raw format.
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