I think you have it right. I don't know if I turned those corrections off, but I figure since I shoot RAW it doesn't matter. I think noise reduction affects RAW but not sure. I leave it on "auto." I think the Pentax engineers are smarter than me.
Paul via phone > On May 14, 2016, at 4:45 PM, Stanley Halpin <[email protected]> > wrote: > > A couple of days ago Bob Sullivan said this: > >> Yes, the K-1 came with lens corrections turned on, but it doesn't seem >> to effect processing time in camera. > > Then yesterday in his eNewsletter Tim Grey strongly advocated for the use of > in-camera noise reduction for long exposures. > > Well, earlier in the week I had been going through the menus on the K-1 doing > the initial setup. My longstanding bias has been to turn off lens > corrections, noise reduction, Highlight and Shadow Correction. And now in > addition I get to turn off Clarity and Skin Tone adjustments. > > After seeing Bob’s and then Tim’s unrelated comments, I thought I would try > and think this through. IIRC, one of the bases for my bias against such > own-camera processing was that they only affected jpg files anyway, I don’t > shoot jpg, so why risk processing time on something that has no value. > Another of my assumptions has been that Lightroom or similar on my full-up > computer is able to deploy more sophisticated image processing routines than > is feasible on the ittybitty processor in the camera. > > I dug into the K-1 manual and also went back to the K-3 manual. These are my > “findings”: > > 1. With the K-1 the manual says that the lens correction information is saved > in a separate file when shooting RAW, and that information is applied during > [in-camera] processing of the RAW to jpg image. So, irrelevant unless you > shot jpegs. Turn Off. > > 2. I find no indiction of what happens to Clarity and Skin Tone adjustments > but suspect that they are jpeg only. Turn Off. > > 3. We know that HDR in-camera is a merging of multiple images, so here both > RAW and jpeg files are affected. Turn Off, mostly. > > 4. Pixel Shift and Astrotracer functions also change the RAW and jpeg image > capture. Turn Off except for special unique circumstances. > > 5. Long-exposure and High-ISO noise reduction change the images. I am not > sure about this one. > > 6. Highlight correction? Shadow correction? Do these affect the RAW image or > just jpeg? Do they do any harm? Do they do more good than you could > accomplish with a simple slider in Lightroom? > > I would appreciate feedback on the validity of my assumptions and my > conclusions. > > stan > -- > 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. -- 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.
