Here are a few pictures from yesterday’s Raw Processing Panel, put on by the Center for Photographic Art. I had a great time, and learned a lot. Thanks to Rex Naden for organizing and moderating the panel, and to my fellow panelists, Eric Chan (Adobe) Charles Cramer, Brian Griffith, (Iridient Digital) and Lionel Kuhlmann (Capture… [Read More]
Archives for April 2013
Lightroom and Photoshop Exposure controls, Part 7
I was unable to figure out why Lightroom is boosting the brightness and chroma of 32-bit floating point TIFFs imported into it, so I reluctantly decided to use the correctly-exposed synthetic image with the minus one-stop Lightroom Exposure adjustment as the reference and compute errors from it. I computed the CIEL*a*b* Delta-E stats of the… [Read More]
Lightroom and Photoshop Exposure controls, Part 6
Eric Chan has informed me that there are two image-processing pipelines in Lightroom: output-referred, and scene-referred. Raw files get the scene-referred pipeline. Integer TIFFs get the output-referred pipeline. Therefore, all my TIFF test images were getting a different set of processing than LR applies to raw files. I’ve done some testing with real raw files,… [Read More]
Lightroom and Photoshop Exposure controls, Part 5
[Added after the original post. Eric Chan has informed me that there are two image-processing pipelines in Lightroom: output-referred, and scene-referred. Raw files get the scene-referred pipeline. Integer TIFFs get the output-referred pipeline. Therefore, the TIFF test images are getting a different set of processing than LR applies to raw files.] I can’t just leave… [Read More]
Lightroom and Photoshop Exposure controls, part 4
[Added after the original post. Eric Chan has informed me that there are two image-processing pipelines in Lightroom: output-referred, and scene-referred. Raw files get the scene-referred pipeline. Integer TIFFs get the output-referred pipeline. Therefore, the TIFF test images are getting a different set of processing than LR applies to raw files.] Bill Janes suggested that… [Read More]