What a fantastic post, Neuro. Thanks!
Originally Posted by neuroanatomist
They are specific to the camera, but there are several important differences. First is that the LR3 corrections are all based on simple calibrations anyone can do in their home by printing out a target and taking a few simple photos of it. DXO, on the other hand, uses expensive, industrial grade calibration tools. The LR3 modules are mostly contributed by manufacturers and users, so the correction can be incorrect (at least until it is fixed in a future release), whereas DXO does all the calibration themselves, so the quality is consistently good. Finally, LR3 only does vignetting, distortion, and lateral CA correction, while DXO does a lot more, including lens-specific deconvolution sharpening (based on measuring actual point spread, IIRC). Overall, DXO has a significant advantage in this area, as long as the user's bodies/lenses are covered.
Reply With Quote