I have it, but don't know how to do it in LR. A Kielcz On Aug 1, 2012, at 8:58 AM, Alan Goldhammer <agoldhammer@xxxxxxxxxxx> wrote: > The Passport has software that does this for you. You need to buy it. > > -----Original Message----- > From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] > On Behalf Of adam k > Sent: Wednesday, August 01, 2012 8:56 AM > To: argyllcms@xxxxxxxxxxxxx > Subject: [argyllcms] Re: help with camera profile > > Alan, > How do you calibrate camera in LR4? > Thank you! > > A Kielcz > > On Aug 1, 2012, at 8:51 AM, Alan Goldhammer <agoldhammer@xxxxxxxxxxx> wrote: > >> Yes, the Passport does contain the identical patch, it's just more >> convenient and it also has some other valuable tools. You can also >> use the X-Rite software and Adobe Lightroom to do a camera calibration >> which will be specific for your camera. The effects are quite subtle but > noticeable. >> With respect to the dynamic range of the camera, yes this can be an >> issue which is why so much has been written about exposing to the >> right (ETTR) so that you move the histogram more towards white >> clipping. The problem is that the camera manufacturers set the >> software to render the histogram as they see fit and you may end up >> losing 1/3 to 1 full stop of information this way. Two ways to get >> around this are 1) bracketing so that you get several images with a >> range of exposures or 2) setting your camera up for Uni-White Balance >> (UniWB) that will counter what the camera maker has set up. You can >> also extend the dynamic range by HDR as long as you don't go overboard >> with wild colors. Photoshop can do this and there are other shareware > software packages as well. >> >> Alan >> >> -----Original Message----- >> From: argyllcms-bounce@xxxxxxxxxxxxx >> [mailto:argyllcms-bounce@xxxxxxxxxxxxx] >> On Behalf Of Alberto Ferrante >> Sent: Wednesday, August 01, 2012 7:03 AM >> To: argyllcms@xxxxxxxxxxxxx >> Subject: [argyllcms] Re: help with camera profile >> >> >> I was actually planning to get a ColorcheChecker Passport: it has >> pretty much the same price and it could be useful to me not only for >> checking the profile. If I understood well, the 24-patch "classic" >> target should be the same as the standard 24, just smaller... Is that > correct? >> >> >> A question I was asking myself: cannot the problems with >> shadows/highlights be related with the dynamic range of the camera? >> Specifically, the dynamic range of the target is roughly 8 stops (gray >> patches from full black to full white on paper). Most cameras, in raw, >> can register more than 8 stops of dynamic range and, therefore, the >> model built in the profile will not cover directly the missing parts >> (it may cover them through some kind of interpolation, that may not >> correspond to the reality)... Am I wrong? >> >> Thanks again for the great help! >> >> Regards, >> Alberto >> >> > >