Tim, how about a K-r - costs about as much as a good lens Cheers Ecke 2011/3/20 Paul Stenquist <[email protected]>: > You really need a fine line scale to determine focus. Do you have a meter > stick? Focus on a number midway down the stick, with it lying on the floor. > Come at it from a 45 degree angle. If you're getting inconsistent results, I > suspect your test method is askew. > > Paul > On Mar 20, 2011, at 2:28 PM, Tim Øsleby wrote: > >> Shit. Redid the test. On tripod, focused at a remote control (don't >> have a proper test chart). >> This time it back focused a bit at 16mm, back focus a lot at 28mm, and >> spot on at 50mm. Same result in tungsten light. >> >> Am I doing something wrong, or is the lens a wreck? Or is it the camera? >> >> -- >> MaritimTim >> >> http://maritimtim.blogspot.com/ >> >> >> >> 2011/3/20 Tim Øsleby <[email protected]>: >>> Just did a formal test using the AF-assist light. >>> It did OK at the long end, but front focuses heavily at 16mm. >>> Hm. >>> I'll redo the test, and include the mid range. But it does not look >>> good so far. >>> >>> Will test it in the studio later. Right now it is occupied by a college. >>> >>> -- >>> MaritimTim >>> >>> http://maritimtim.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. >
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