On Sat, Feb 16, 2013, Larry Colen wrote: > On Feb 16, 2013, at 11:00 AM, Aahz Maruch wrote: >> On Sat, Feb 16, 2013, Larry Colen wrote: >>> On Feb 16, 2013, at 9:04 AM, Aahz Maruch wrote: >>>> >>>> AFAICT, common wisdom is to set these values on the K-5/K-5 II: >>>> >>>> Highlight Correction on >>> >>> So far as I know, Highlight correction only affects the JPEGs, so it >>> doesn't have any effect on photos that you actually care enough about >>> to process correctly. >> >> Weird, I could have sworn I saw something that said that highlight >> correction applies to RAW but shadow correction only applies to JPEGs. >> But now I can't find anything like that in any of the manuals. [...] >> Here's something I found: >> >> http://www.pentaxforums.com/forums/pentax-k-5/133189-anyone-using-expanded-dynamic-range-feature-your-k5.html > > I think that the answer that you're looking for is here in the link you > posted:
Yup, that's why I posted it, I usually don't bother to copy/paste a chunk of text. > My interpretation is that the K-5 has such incredible dynamic range > (I've recovered shots > 5 stops under exposed), that what they do is > under expose by a stop to get more headroom at the high end, and then > boost the exposure in post processing. In other words a fast and > sloppy version of expose to the right, where they don't actually look > to see where the highlights fall on the exposure. > > The important thing to remember is that ideal exposure for JPEG is not > ideal exposure for RAW. When shooting for JPEG you want to expose > so that the object of interest has the best exposure. When shooting > for RAW you want to expose so that you don't lose any important data > to either clipping at the high end, or noise at the low end, and you > adjust the final results in post processing. I'm starting to play a bit with RAW, and my impression is that you're mostly but not entirely correct (but that could easily be my lack of experience with RAW editing). That is, in some scenes with wide dynamic range, even a couple stops of underexposure in the target area doesn't produce quite as nice an effect after editing as getting the exposure right in the first place. Side note: anyone else using Darktable or other Linux-based RAW editor? Any recommendations? (I just got on the Darktable mailing list.) >> Guess that'll teach me to trust dpreview.com as a source of >> information... ;-) > > When I first got my K100 I spent a lot of time hanging out on the dpr > pentax forum. I have since realized that most online photography > forums have a few experienced members and are mostly newbies, and > people that have been doing photography just long enough to discover > that if they use a fast lens, a wide aperture and manual exposure > they can do neat things using limited depth of field to isolate their > subject. As in any field they are the typical low-intermediate that > think that they are advanced, who pontificate on anything. Imagine > me, with even less technical knowledge, and you're getting close. Heh. > Also, if you are shooting RAW+, if you maximize the quality of your > JPEG it'll take almost as much space as a RAW file, at least on a K20 > (probably about half the space of a RAW on a K-5 because of 8vs 14 > bits), i.e. a lot of space. I'd optimize your jpegs for web viewing, > because you'll want to use RAW for prints, especially if you're going > to the bother to get the K5II-S. Probably will once I get the hang of RAW editing; for now, I'm sticking with full-size JPEG -- disk space is cheap. -- Hugs and backrubs -- I break Rule 6 http://rule6.info/ <*> <*> <*> Help a hearing-impaired person: http://rule6.info/hearing.html -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
