Quoting Digital Image Studio <[EMAIL PROTECTED]>: > On 12/01/07, David J Brooks <[EMAIL PROTECTED]> wrote: > >> Yes i am Rob. >> >> They are both close to the same magnification, but i'll try again. > > Hi Dave, > > I'm now not really sure that mode images would shed more light. In the > context of aliasing sans polarizer the issue of the K10D body's > integrated anti-aliasing filter being a bit weak in order to foster > greater apparent sharpness could be part of the reason. Secondly it > could be a function of the Bayer RAW interpretor. > > You may just have fluked the angle that caused the subject to alias > with the sensor. Or the polarizer which is a grating filter could be > creating some kind of interaction with the sensor/subject, again with > a bit of fluke WRT angles. > > I think really you;d have to attempt to replicate the scenario and > create some test shots to really determine what was the cause. > Hopefully it was just fluke circumstances. > > Cheers,
Humm, could be. As i mentioned my test shots with the Sigma 300 at 800 and 1600 iso showed a very tiny amount on certain parts of the shots, at very high magnification, so i'm not worreid about that. This was iso 320 and i usually like to shoot between 100 and 400, so i got a tad panicy when i saw this at such a low iso. I would expect this on my D2h,but .... I'm not far from this subject, about 20 Km's. Next sunny day i'll go back and try several angles and lenses. Dave > > -- > Rob Studdert > HURSTVILLE AUSTRALIA > Tel +61-2-9554-4110 > UTC(GMT) +10 Hours > [EMAIL PROTECTED] > http://home.swiftdsl.com.au/~distudio//publications/ > Pentax user since 1986, PDMLer since 1998 > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > Equine Photography in York Region -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
