On Wed, May 22, 2013 at 4:08 PM, Ciprian Dorin Craciun <[email protected]> wrote: > On Wed, May 22, 2013 at 8:41 PM, Bruce Walker <[email protected]> wrote: >> On Wed, May 22, 2013 at 12:24 PM, Ciprian Dorin Craciun >> <[email protected]> wrote: >>> On Wed, May 22, 2013 at 6:21 PM, Charles Robinson <[email protected]> wrote: >>>> >>>> For the K30 (and K5), there is so much exposure latitude that if you're >>>> really worried about oversaturation, just "underexpose" by a stop.. or >>>> two.. or three.. and bring the levels up to what you'd like to see in >>>> post. Job done! >>> >>> The "underexposure" is exactly the problem: in most cases although >>> the JPEG (or the embedded JPEG in the RAW that we see the histogram >>> for) is overexposed, the actual RAW data is under exposed, to the >>> point that almost 25% of the histogram contains nothing. >> >> Since this strange effect only occurs after you tweak the camera >> settings to achieve this elusive UniWB thing, I'd respectfully suggest >> reseting your JPEG settings back to normal. > > On the contrary, this effect I've noted is **before** making any > "special" settings, i.e. straight "normal" settings.
Ciprian, can you describe a scene or circumstances in which you have observed this very odd behavior? Maybe an example image? I'm non-plussed because in all of my shooting I've _never_ experienced that. And I can safely say that I've shot in just about every known lighting condition. [Known to me. :-)] BTW, I shoot strictly RAW, no +JPEG, WB usually fixed at Cloudy, JPEG configuration at factory defaults or close to. I stick to a 16-bit post-processing workflow. I'm a stickler for image quality. Now elsewhere you have explained that you want to doctor or calibrate your histogram in aid of calculating exposures for doing ETTR. You might want to consider that ETTR is considered by many to be no longer relevant and even harmful. I don't follow the notion anymore myself. Have you read this? http://theonlinephotographer.typepad.com/the_online_photographer/2011/10/expose-to-the-right-is-a-bunch-of-bull.html Or: http://goo.gl/UFjy3 Even doing nothing but RAW shooting I know that once you clip your highlights, they are gone. Pure white. No recovery possible. Complete loss of "value". Possibly still okay for showing to your parents. :-) -- -bmw -- 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.
