Mmm not sure it is the graphics card. It is most probably the screen. And no, Mac screens are no better than PC screens :(
2011/6/3 Tim Bray <tb...@textuality.com>: > Hah, the plot thickens. I can see the banding perfectly clearly on my > everyday MacBook Pro. But on our big high-quality NEC monitor, I > can't. But even on the big monitor, I can see the bands in that .png > file. > > Interesting because this is the first time there's actually been an > observable effect of the fairly limited graphics card in the laptop. > Thanks everyone for making me take a second look. -T > > On Thu, Jun 2, 2011 at 8:55 PM, Bob Sullivan <rf.sulli...@gmail.com> wrote: >> Tim, >> I don't see the banding either. >> When I've had this kind of problem, >> the banding was caused by display resolution. >> Regards, Bob S. >> >> On Thu, Jun 2, 2011 at 2:30 PM, Charles Robinson <charl...@visi.com> wrote: >>> On Jun 2, 2011, at 12:47, Larry Colen wrote: >>> >>>> >>>> On Jun 2, 2011, at 12:11 AM, Tim Bray wrote: >>>> >>>>> Check out >>>>> http://www.tbray.org/ongoing/When/201x/2011/06/01/-big/RUNE0790.jpg.html >>>>> >>>>> Look at the green bokeh-fied background and observe the obvious lines >>>>> that look like elevation lines on a map, let's call them "bars", as >>>>> the green brightness drops off. They ain't there in the .dng, and >>>>> after the first cut, I specified 100% JPG quality and they're still >>>>> obvious. >>>>> >>>>> It gets weird... I took a screen grab of the Lightroom window, in >>>>> which none of those bars are visible, and saved to a .png file, using >>>>> built-in OS X facilities, the PNG created by Preview. Obvious bars! I >>>>> put it online at http://www.tbray.org/tmp/screen-grab.png - I thought >>>>> .png was uncompressed! >>>>> >>>>> I'm sure that a silky-smooth jpg of this picture could be created. >>>>> But I don't know how. >>>> >>>> It's not too bad here. I wonder if you're pulling an Ann and have >>>> something set to too few bits. >>>> >>> >>> I'm having the same issue - I cannot see the isobars/lines/whatever at all. >>> Silky-smooth on my screen (Chrome browser on a Macbook) >>> >>> -Charles >>> >>> -- >>> Charles Robinson - charl...@visi.com >>> Minneapolis, MN >>> http://charles.robinsontwins.org >>> http://www.facebook.com/charles.robinson >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> 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 >> PDML@pdml.net >> 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 > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- Thibault Massart aka Thibouille/Thibs ---------------------- Photo: K-7, Sigma 28/1.8 macro, FA50/1.4, DA40Ltd, K30/2.8, DA16-45, DA50-135, DA50-200, 360FGZ KX, MX, SuperA+Motor, Z1, P30 Mamiya C330+80/2.8 Sekonic L-208 FalconEyes TE300D x2 Studio flashes Laptop: Macbook 13" Unibody SnowLeo/Win7 Programing: Delphi 2009 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
