On Feb 11, 2008, at 1:28 PM, William Robb wrote: >> I have a suspicion that it might be another case of front/back focus, >> given that they describe the problem looking like the image is out of >> focus. At 2.8, it would take very little in the way of mis-focus for >> a problem to show up. They need to verify whether or not the lens >> has >> a focus point somewhere other than where they think it is before >> blaming it on some QC issue. It might be the camera or the operator. > > The K10 is known to have focusing issues. It is pretty hard to blame a > picture being out of focus on the lens in any circumstance though, > as it is > only one of the three things that need to be working properly to > get a well > focused image (the other two being, as you say, the operator and > the camera. > I noted that no one on the Pentax forum thingie mentioned trying to > refocus > the lens slightly to see if it could be brought into sharper focus, > even if > it meant looking slightly out of focus in the viewfinder.
I read all these things on various forums about focusing issues and shake my head. It seems no one knows how to use an SLR viewfinder anymore: they all expect the camera to nail the focus perfectly for them and ignore what they're looking at. That said, I was out with the DA* zooms and the K10D a few weekends ago. As evening came on, AF performance dropped into the toilet with the 50-135 ... When it *could* focus, it was extremely slow at it (and missed on accuracy too) which lost several shots until I gave up and switched to manual focus. The battery was getting close to exhausted so I swapped in a fully charged one; however that made little to no difference. What made me more disappointed with the K10D was that the Panasonic L1, with an even more rudimentary 3 point AF system and a similarly spec'ed ZD 50-200 lens, was able to lock in a good focus quickly at about 2 stops lower lighting circumstances the following evening. Ameliorating that, the K10D's AF-C and focus tracking performance in good light is superior to the Panny's. None of this affects me that much however. I'm quite comfortable switching to manual focus and get good results without any <gabble>- focus problems. I just thought the way the AF system gave up the ghost in anything other than decent light was somewhat disappointing, even with the top of the line lenses. Godfrey -- 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.
