Hoppy
02 February 2008, 22:35
Been reading Digital Camera Reviews and News: Digital Photography Review: Forums, Glossary, FAQ (http://www.dpreview.com) and their rather good new lens tests. Stumbled accross this, which seems to work very well.
Aberration correction using RAW and Digital Photo Pro 3.2
"With the release of version 3.2 of their Digital Photo Pro RAW processing program, Canon quietly snuck in one hugely interesting feature, an automated lens aberration correction module. This is pretty well unique amongst the camera manufacturers' free software, in that it can correct for four specific aberrations - namely peripheral illumination (i.e. light fall-off), distortion, chromatic aberration, and colour blur. Essentially the program reads the RAW file's EXIF data to establish the camera/lens combination, then uses the focal length and distance data, presumably in combination with a look-up table of pre-determined corrections, to apply the relevant adjustments. One problem with this approach is that not all cameras and lenses are yet supported in version 3.2, however our test combination of the 18-55mm IS on the EOS 40D is one of those favoured few that made it onto the initial list, so we thought we'd investigate just how well it worked."
More here:
Canon EF-S 18-55mm 1:3.5-5.6 IS Lens Review: 4. Test results: Digital Photography Review (http://www.dpreview.com/lensreviews/canon_18-55_3p5-5p6_is_c16/page4.asp)
As DPReview points out, it can't be long before this is incorporated directly into camera bodies, as part of JPEG processing. With sensor improvements being arguably the most exciting aspect of digital camera progress these days, features like this and hopefully improved dynamic range can't be far off :)
Richard.
Aberration correction using RAW and Digital Photo Pro 3.2
"With the release of version 3.2 of their Digital Photo Pro RAW processing program, Canon quietly snuck in one hugely interesting feature, an automated lens aberration correction module. This is pretty well unique amongst the camera manufacturers' free software, in that it can correct for four specific aberrations - namely peripheral illumination (i.e. light fall-off), distortion, chromatic aberration, and colour blur. Essentially the program reads the RAW file's EXIF data to establish the camera/lens combination, then uses the focal length and distance data, presumably in combination with a look-up table of pre-determined corrections, to apply the relevant adjustments. One problem with this approach is that not all cameras and lenses are yet supported in version 3.2, however our test combination of the 18-55mm IS on the EOS 40D is one of those favoured few that made it onto the initial list, so we thought we'd investigate just how well it worked."
More here:
Canon EF-S 18-55mm 1:3.5-5.6 IS Lens Review: 4. Test results: Digital Photography Review (http://www.dpreview.com/lensreviews/canon_18-55_3p5-5p6_is_c16/page4.asp)
As DPReview points out, it can't be long before this is incorporated directly into camera bodies, as part of JPEG processing. With sensor improvements being arguably the most exciting aspect of digital camera progress these days, features like this and hopefully improved dynamic range can't be far off :)
Richard.