Thursday, 17 October 2019

pentax - What's the difference between PEF and DNG RAW formats?


I just recently purchased a Pentax K-r. It has two formats to shoot raw with, PEF and DNG. Are there advantages or disadvantages with using one over the other?




Answer



PEF is Pentax's proprietary RAW format. DNG is the semi-standard owned by and promoted by Adobe.


In reality, there's no practical difference. They both hold the same information. It seems like there might be an advantage in having a standard format, but as a practical matter, RAW converter software needs to be updated with information for each camera anyway, and so DNG doesn't really add much. And pretty much all software that supports Pentax cameras via DNG can also read PEF files.


In older Pentax models, PEF could be (losslessly) compressed and DNG was always uncompressed. In modern cameras, they're both compressed.


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