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Iridient O-Transformer

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Iridient O-Transformer is a utility that can be used to convert Olympus ORF/ORI images to DNG format using Iridient Digital's high quality RAW processing algorithms. Much of the core RAW processing, sharpening, noise reduction and lens corrections featured in this program are shared with Iridient Developer a more full-featured RAW processor that is available only for macOS.

The Iridient RAW processing routines have been in active development for over 14 years for use in Iridient Developer and have been optimized and refined over the years for the best possible image quality. Iridient Developer is widely regarded as one of the highest quality RAW processors available.

This program converts Olympus' proprietary ORF and ORI image data to the openly specified DNG image format. The DNG format was created and is publicly documented by Adobe. They have detailed information regarding the format on their website here:
Adobe DNG information

The key RAW processing stages that can be applied by Iridient O-Transformer during conversion to DNG include: