I'm no expert on White Balance technology, but looking at Joseph McAllister's dog pictures and David Parsons reporting shifts when using flash, could it be that, when using AWB, the amount of white or very light subject matter is making the changes happen? In the three pictures of the dogs, the nearer lighter coat dog is turning more and more towards the light source, and my guess would be that this is causing the AWB algorithm to try to correct for the change: unnecessarily in this case.
If this is indeed the reason, then it seems that not using AWB would be the solution, although I have not experienced anything like the problems reported here with my ist-D, which is on AWB pretty much all the time. John in Brisbane -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Parsons Sent: Wednesday, 31 March 2010 5:08 AM To: Pentax-Discuss Mail List Subject: Re: K20D shooting Magenta images with flash What is your light source? On Tue, Mar 30, 2010 at 1:21 PM, Joseph McAllister <[email protected]> wrote: > With the K20, and since I got one recently, a K-7, a single or a series of > shots within a string of shots, outdoors, same light, no flash, seconds > apart in time, I'll get magenta (large White Balance shift) images. Raw, > auto everything. It's a pain in the butt. > > I'm working on finding a cure. > > > On Mar 29, 2010, at 06:21 , [email protected] wrote: > >> Is it in the flesh tones, but did not happen in all the photos. I will put >> up a photo or two. >> This happened with both the Pentax AF540 and the white lightning. The 540 >> was a direct flash shot. White lightning was bounced into a 60" reflector >> with a silver face. Joe >> >> ----- Original Message ----- >> From: "William Robb" <[email protected]> >> To: "Pentax-Discuss Mail List" <[email protected]> >> Sent: Monday, March 29, 2010 12:29:40 AM GMT -05:00 US/Canada Eastern >> Subject: Re: K20D shooting Magenta images with flash >> >> >> >>>> On 3/28/2010 9:24 PM, [email protected] wrote: >>>> >>>>> Has anyone had any trouble with their digital bodies images over >>>>> magenta. Today I shot a large family with White lightnings and also >>>>> different shots with a Pentax AF540. The camera was set on >>>>> manual..Never >>>>> had this happen before.. >>>>> Thoughts anybody..Thanks >> >> Pictures or it isn't a problem. >> >> William Robb > > Joseph McAllister > [email protected] > > "Gaudeamus igitur, juvenes dum sumus..." > http://tinyurl.com/ndmfhb > > > > > > -- > 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. > -- Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- 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.
