Archived posting to the Leica Users Group, 2009/01/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]you've described my thinking and methodology better than I have or possibly could have Regards, George Lottermoser george@imagist.com http://www.imagist.com http://www.imagist.com/blog http://www.linkedin.com/in/imagist Picture A Week - www.imagist.com/paw_07 On Jan 18, 2009, at 8:23 PM, Henning Wulff wrote: > A suggestion has been made that the clipping shown on the histogram > for the jpeg might not be accurate, so just give a bit more > exposure and check the clipping in the RAW later. > > As long as _NO_ channel is clipped, things are fine. The problems > arise if one or two channels are clipped, and the other(s) aren't. > Then when you try to bring some of that highlight info back, you'll > get the info from that one or two channels, but the other will have > nothing. You then get unbalanced information which is erroneous, > and distorted. > > It's true that the jpegs aren't accurate, but you can't therefore > assume that the DNG's will be fine. That doesn't follow. > > If you see no clipping, and have information in the furthest right > short of clipping, you have the best chance of having as much > accurate information as possible. > > My Canons certainly do not give me that with a + exposure > compensation on average subjects on matrix metering, and with my > metering technique (which works perfectly on my M6's with the meter > set to 400 for Tri-X developed in D-76 1:1 etc.) I generally leave > my M6 set to -2/3. > > When I bring the DNG's into LR, I try to use the highlight recovery > as little as possible, and the exposure slider doesn't get used > much unless I'm shooting in very dark circumstances (I've explained > my technique there previously). Mostly I use the curves tool to do > contrast adjustments, although the LR curves tool tries to outsmart > me and not allow me the fine control I'm used to in PS. > > If I do have to use the exposure slider, I'm much happier to > increase the exposure than decrease it, as I know that while I > might be increasing some noise in the shadow areas which is quite > easily dealt with, I won't be introducing uncorrectable distortion > in the highlights. > > -- > > * Henning J. Wulff > /|\ Wulff Photography & Design > /###\ mailto:henningw@archiphoto.com > |[ ]| http://www.archiphoto.com > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information