Archived posting to the Leica Users Group, 2014/03/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In doing some preliminary exploratory shooting with my new M240 and the previous-generation 35mm Summilux ASPH, I encountered the inevitable severe fall-off of illumination at the corners, as I expected. What I did not expect was that the M?s built-in lens correction feature would reduce this by only a subjective 50% or so, leaving a prominent and very disappointing degree of vignetting still to be seen. I realize that this can be easily corrected in post-processing, e.g. Lightroom, PS, and DxO, but my question is WHY? Why would Leica engineers, after recognizing the problem, creating a software correction to it, and deciding to incorporate that correction into the FF M digital camera, then proceed to implement it in such a half-assed fashion? Clearly a full correction is straightforwardly implementable in post-processing, so why not write the firmware to accomplish it rather than hobble it to perform a half-correction? Anybody know the reasoning behind this? Or am I missing some feature that would actually give full correction? And when correcting for this in Lightroom etc., what do most of you do? Let the camera do its bit and then finish it, or simply dispense with the built-in correction and do everything in LR? Will LR and the other software suites with built-in corrections for various lens and body combinations even perform properly with the M?s built-in correction applied? Thanks for any suggestions. ?howard