Output File Size

[platypus (Canon & Mac (Intel and M1))]

File size of exported DNG is more than 4x larger than original RAW file

DPL creates “linear” DNGs. They contain demosaiced images and therefore consume more space. While a raw image contains r/g/b/g pixels, a demosaiced image is composed of rgb/rgb/rgb/rgb pixels. Raw pixels are 12-14 bits deep vs. 16 bits in a demosaiced image file. In total, you get the approx. size change mentioned above

Please note that the same is true for PureRaw.
Output files are “linear DNG” files, hence the size difference.

Copied from Adobe: https://helpx.adobe.com/photoshop/using/adobe-dng-converter.html

• Linear (demosaiced)
  The image data is stored in an interpolated (“demosaiced”) format. This option is useful if a camera’s particular mosaic pattern is not supported by a DNG reader. The default mosaic format maximizes the extent of data preserved. Mosaic image data can be converted to linear data, but the reverse is not possible.