Opticallimits

A retest of the Pentax 55-300 would be great.

Also the Tamron 17-50 2,8 non VC would be the perfect reference lens as it was tested on all systems.

http://www.opticallimits.com/pentax/618-...24?start=1



ePHOTOzine also has tested the DA 70 on a K-5:

http://www.ephotozine.com/article/smc-pe...view-16835



Furthermore, here are results of the FA 77 on a K-5:

http://www.ephotozine.com/article/smc-pe...lens-16892



As a comparison, the tests of photozone on a K10D

http://www.opticallimits.com/pentax/127-...rt?start=1

http://www.opticallimits.com/pentax/128-...rt?start=1



Could you comment on the different findings (MTF50 graphs: DA70 vs. FA77)?