DNG vs RAW in-camera


Link Posted 08/01/2012 - 11:40
Just noticed the option to capture in DNG format rather than RAW on my new K5. On the old K100D I converted to DNG on uploading to Lightroom, almost never used the Pentax RAW converter, and didn't archive the RAW originals. Without getting into the usual RAW vs DNG arguments, I can't see any reason not to switch to the in-camera DNG option - but as usual I would value any opinions from the forum.


Link Posted 08/01/2012 - 11:44
My older version of PS is'nt able to open the K5's RAW files so DNG is the obvious solution, I can't see any noticable difference and like you I save them as Tiffs once I've decided the " keepers " and delete the DNG's.


" A Hangover is something that occupies the Head you neglected to use the night before".

K1 - Sigma 85mm F1.4, Pentax 150 -450 F4.5 / 5.6, Pentax FA 24 - 70 F2.8

Sigma 100-300 F4, Samyang 14mm F2.8, Sigma 70-200 F2.8,

K5iis - Sigma 17 - 70 F2.8, Sigma 70 - 300 F3.5/F5.6, Sigma 18 - 200 F3.6 / F4.5.


Link Posted 08/01/2012 - 13:10
The newer cameras all have DNG or PEF as RAW files so we select either one depending on whether one uses Pentax Utility Software or Photoshop
K1/K3, DA*16-50mm F2.8, FA 31mm F1.8, FA43mm F1.9 Limited, FA77mm F1.8 Limited, SMC Pentax K 85mm F1.8, DA18-135mm F3.5-5.6, FA*28-70mm F1.8, FA*200mm F1.8


Link Posted 08/01/2012 - 13:13
RAW isn't a file type. PEF is Pentax's native RAW, DNG ia Adobe's version.
DNG is pretty much a standard now and probably best for archiving.
In other words, both DNG and PEF are RAW.


Link Posted 09/01/2012 - 16:30
I switched to DNG years ago to avoid having to worry about sidecar files for metadata.
The K5 DNG format now uses compressed images which my K20d didn't. So its DNG files are approximately the same size as the PEF's. In the past I used to convert my K20d PEFs to DNG with Adobe DNG Converter (ADC) with a significant reduction in file size as compared to the native camera DNG format. Now that step is not necessary.

One other point. I like DxO Optics Pro as a raw converter. It is virtually automatic, and creates finished images requiring very little touch up. It does not support DNG files created by third party converters like Adobe DNG Converter. But it does support ALL camera generated formats - Pentax k??? among them. So it will read DNG files created with the camera, but not necessarily converted DNGs. It worked with my ADC converted K20d PEF's but it does not work with my ADC converted K5 PEF's.


Link Posted 09/01/2012 - 19:56
The whole point to Adobe's DNG (Digital Negative) is that it's a standard format readable by all RAW converters now and in the future, particularly suited to archiving to be readable in future generations - so there really should be no problems reading a DNG from a camera or one converted with the Adobe converter. Not sure why you call Adobe's DNG converter 'third party' as Adobe are the inventor and they own it.
Some good info at Wiki: http://en.wikipedia.org/wiki/Digital_Negative
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