I agree with Bulent about your lighting conditions. The 31 Ltd would probably be described as "contrasty" so it may simply be doing a better job of conveying the messy and difficult spectrum of your scene to the sensor than your other lenses do.
Besides basic white balance, you may need to add or subtract other colours to compensate for the fluorescents. You'd have to shoot a colour swatch card under that light as a calibration aid. On Wed, Mar 12, 2014 at 4:35 PM, Bulent Celasun <[email protected]> wrote: > I guess the presence of any fluorescent light source illuminating a > scene can make color judgements > very difficult, if not impossible. > > Any color shift produced by a lens (especially by a fine lens like > yours) perhaps be only measured/detected under strictly controlled > conditions. > > Bulent > --------------------------------------------------------------------- > http://patoloji.gen.tr > http://celasun.wordpress.com/ > http://www.flickr.com/photos/bc_the_path/ > http://photo.net/photodb/user?user_id=2226822 > http://www.pentaxphotogallery.com/artists/bulentcelasun > > > 2014-03-12 22:13 GMT+02:00 Igor Roshchin <[email protected]>: >> >> >> I've been using Pentax 31/1.8 Ltd lens for the past few months, and I >> noticed that it tends to produce lots of red. I mean that the red >> channel frequently appears to be somewhat over-saturated. >> In many of those cases I can fix that in LR by dialing down the saturation >> of the red channel under HSL menu in the "Develop" module (LR 3.6) >> to about -10 -- -20. >> >> This is especially noticeable in extremely red lips and/or red faces >> overall. >> >> Does anybody else observe this trend? >> I wonder if it might be >> 1. the specifics of my scenes (relatively low-light, mostly fluorescent >> lights) >> 2. the specifics of my lens. >> 3. specifics of the LR 3.x process [that is taken care of in 5.x] >> (I don't see this with other lenses) >> 4. something else... >> >> Igor >> >> >> >> >> -- >> 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. -- -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.
