
Adobe has updated its Camera Raw software to version 5.2. It adds a few features that Lightroom users already enjoy (output sharpening and targeted adjustment tools for adjusting images by clicking and dragging) but the most interesting part for us gadgeteers is the support for the Panasonic DMC-LX3.
Up until now, users of this camera have been stuck with the bundled RAW converter software, Silkypix. Worse, Silkypix doesn’t then allow conversion to the more open dng, or digital negative, format. This was because of some internal jiggery-pokery by Panasonic.
The wide angle (24mm) Leica lens apparently suffers from extreme barrel distortion (straight lines at the edge of an image bow outwards) which Panasonic has been correcting in software. This is fine with jpeg images, which are often heavily processed in camera anyway. But with RAW files, it has been a problem.
RAW files are like the negatives of film, and should not be messed around with. RAW data is the data direct from the sensor, delivered to the memory card without any modification. But the Silkypix software has had its RAW decoder tweaked to apply correction to this lens distortion.
Adobe has managed to work around this non-standard behaviour with the new Camera Raw update, but at some cost. If you keep the files as they come from the camera, all is well. But if you convert them to dng files, they’ll be tripled in size:
In this release the native, proprietary files from these cameras can only be converted to linear DNG files. A linear DNG file has gone through a demosaic process that converts a single mosaic layer of red, green and blue channel information into three distinct layers , one for each channel. The resulting linear DNG file is approximately three times the size of a mosaic DNG file or the original proprietary file format.
This should be fixed in the future, but for now it seems that Panasonic has messed up, at least from the point of view of the advanced amateurs at whom this camera is targeted. Lightroom will be updated to include support in December.
The full list of newly supported cameras:
Canon EOS 5D Mark II
Canon PowerShot G10
Panasonic DMC-G1
Panasonic DMC-FX150
Panasonic DMC-FZ28
Panasonic DMC-LX3
Leica D-LUX 4
Camera Raw 5.2 and DNG Converter Available [Lightroom Journal]
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