K-7 Lens Distortion Correction and Older Lenses
Q:Will the Distortion Correction function in the K-7 work with my M, A, F and FA series PENTAX lenses?
A: No. The Distortion Correction feature only works with DA, DA*, D FA and DA-L lenses.
Note: distortion correction does not work with the smc PENTAX DA 10-17mm F3.5-4.5 ED (IF) Fish-Eye lens.