On Sun, Jul 19, 2009 at 6:10 PM, P. J. Alling<[email protected]> wrote: > The latest news, he's ditching Pentax to complain about Canon. We should > only be so lucky.
He apparently left the Pentax Forums last month or so. Canon owners are less forgiving than we are.:-) I read his blog on occasion. I found it funny that he has a Pentax blog and uses it to bash the equipment. Dave > > Thibouille wrote: >> >> AFAIK most of his so called tests and stories have been based on >> bodies he may have handled but not even own (in most cases). >> Draw your own conclusions... >> >> On Sun, Jul 19, 2009 at 6:00 AM, P. J. Alling<[email protected]> >> wrote: >> >>> >>> Just don't read Ricewhine's measurbator blog on the K7's autofocus >>> tracking. >>> It will either shake your confidence or infuriate you. I found it by >>> accident, and wish I hadn't clicked on the link. Not because I much care >>> what he thinks, but I don't want to up his Google rating. He's another >>> blogger who does more harm than good, much like Kenny Boy, though I >>> believe >>> he actually tests, if you can call it that, the equipment he savages. >>> >>> paul stenquist wrote: >>> >>>> >>>> Good to know. It's what I suspected based on use, but it's nice to know >>>> that my suspicions aren't just wishful thinking. Thanks for taking the >>>> time >>>> to test. >>>> Paul >>>> On Jul 18, 2009, at 7:09 AM, AlunFoto wrote: >>>> >>>> >>>>> >>>>> Better quantified this time. >>>>> >>>>> Yesterday I took stance on a bridge above a highway, and photographed >>>>> large trucks coming towards me. The speed limit at this place is 100 >>>>> km/h, and on top of a gentle slope. I shot series of each truck, and >>>>> have tallied the percentage of out-of-focus shots from each series. >>>>> The cameras were set to: >>>>> >>>>> - SR on for shots with DA*300, shot freehand >>>>> - SR off for shots with FA*600, shot from tripod >>>>> - AF-C, multipoint >>>>> - ISO 800 >>>>> - Av-mode (aperture set to f/8) >>>>> - DNG file format. >>>>> >>>>> Focus was judged by 100% view in Adobe Bridge CS4 without rawfile >>>>> conversion. I took a conservative attitude, judging anything that >>>>> wasn't perfectly sharp on the car front as mis-focused. I typically >>>>> looked at details in the grille (hope it's the right word?) or the >>>>> number plate. >>>>> >>>>> Between each series I allowed the camera to save all files before >>>>> commencing a new series, to make sure camera speed was not held back >>>>> by a full buffer. >>>>> >>>>> K20D + DA*300/4: 13% mis-focused, averaged over 9 series >>>>> K-7 + DA*300/4: 7% mis-focused, averaged over 7 series >>>>> >>>>> K20D + FA*600/4: 43% mis-focused, averaged over 7 series >>>>> K-7 + FA*600/4: 25% mis-focused, averaged over 11 series >>>>> >>>>> Each series held between 10 and 19 shots. >>>>> >>>>> Both lenses are focus-calibrated with the K20D, but not with the K-7. >>>>> I therefore suspect that the K-7 results could be somewhat improved. >>>>> >>>>> There are bound to be many unchecked sources of random variation here. >>>>> One is whether the trucks had cargo or not. If empty, they bounce a >>>>> lot more and could introduce motion blur. I suspect the 600mm shots to >>>>> be affected by this. With the small number of series, I can't rule out >>>>> that the two cameras have got an uneven share of empty trucks. However >>>>> I did the same experiment, at the same place, five days ago with the >>>>> K20D only, and the results from yesterday seems consistent with my >>>>> previous results. >>>>> >>>>> So all in all, the real-life numbers pretty much mirrors the nominal >>>>> doubling of the frame rate. Not the subjective feeling that the K-7 is >>>>> _more_ than twice as fast. Not in this situation anyway. However this >>>>> test, tracking approaching objects, is very different from panning a >>>>> bird flying from one side to the other. >>>>> >>>>> Jostein >>>>> >>>>> -- >>>>> http://www.alunfoto.no/galleri/ >>>>> http://alunfoto.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. >>>> >>>> >>> >>> -- >>> >>> >>> The free man owns himself. He can damage himself with either eating or >>> drinking; he can ruin himself with gambling. If he does he is certainly a >>> damn fool, and he might possibly be a damned soul; but if he may not, he >>> is >>> not a free man any more than a dog. >>> >>> --G. K. Chesterton >>> >>> >>> -- >>> 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. >>> >>> >> >> >> >> > > > -- > > > The free man owns himself. He can damage himself with either eating or > drinking; he can ruin himself with gambling. If he does he is certainly a > damn fool, and he might possibly be a damned soul; but if he may not, he is > not a free man any more than a dog. > > --G. K. Chesterton > > > -- > 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. > -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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.
