2008, September: First movie camera to use DNG as a raw image format, Ikonoskop A-cam dII. 4th anniversary, 2008, 27 September: Camera manufacturers: 13. Camera models: 29. Software products: 200+. Convertible raw image formats: 180+. 2008, September: First DNG converter running on Linux (among several other things), digiKam. 2009, spring/summer: First digiscope with built-in camera to write DNG, Zeiss Photoscope 85 T* FL. 2009, June: Specification version 1.3.0.0 published. 5th anniversary, 2009, 27 September: Camera manufacturers: 14. Camera models: 38. Software products: 220+. Convertible raw image formats: 230+. 2009, November: First "interchangeable unit" camera to write DNG, Ricoh GXR. 2010, February: First 3D movie camera to write DNG, Ikonoskop A-cam3D. 2010, March: First medium format camera to offer the user a choice of proprietary raw or DNG, Pentax 645D. 6th anniversary, 2010, 27 September: Camera manufacturers: 14. Camera models: 47. Software products: 240+. Convertible raw image formats: 290+. 2012, September: Specification version 1.4.0.0 published. 2019, May: Specification version 1.5.0.0 published. 2021, December: Specification version 1.6.0.0 published. During the first 5 years when about 38 camera models were launched that wrote DNG, Adobe software added support for about 21 Canon models, about 20 Nikon models, and about 22 Olympus models. Reception The reaction to DNG has been mixed. A few camera manufacturers stated their intention to use DNG at launch. They first supported DNG about 9 months after launch. Several more niche and minority camera manufacturers added support after this (e.g. Leica). The largest camera manufacturers have apparently never indicated an intention to use DNG (e.g. Nikon and Canon). Some software products supported DNG within 5 months of launch, with many more following. Some only support DNG from cameras writing DNG, or from cameras supported via native raw image formats. OpenRAW was an advocacy and lobby group with the motto "Digital Image Preservation Through Open Documentation". They became opposed to DNG. Some photographic competitions do not accept converted files, and some do not accept DNG. DNG conversion "DNG conversion" refers to the process of generating a DNG file from a non-DNG image. (This is in contrast to "raw conversion", which typically refers to reading and processing a raw file, which might be a DNG file, and generating some other type of output from it). DNG conversion is one of the sources of DNG files, the other being direct output from cameras and digital backs. Several software products are able to do