06-06-2020, 08:30 AM
That 10-17mm was a Pentax design, the APS-C variant of the earlier full frame Pentax 17-28mm fisheye zoom lens. Innovative, but by Pentax.
I gather than you mean lateral CA when you say "fringing was really strong" with the 12-24mm f4 Tokina. With the right software it was quite easy to correct (even with earlier versions of DPP), which restored sharpness and get rid of the magenta/green CA. My gripe with the 12-24mm f4 was its build quality, or lack thereof. The only lens I ever owned where the plastic (not rubber) zoom/focus ring band split/dried/disintegrated within a few years, where the mount screws loosened all on their own, and the aperture flat cable failed after quite sporadic use (big design fault).
I gather than you mean lateral CA when you say "fringing was really strong" with the 12-24mm f4 Tokina. With the right software it was quite easy to correct (even with earlier versions of DPP), which restored sharpness and get rid of the magenta/green CA. My gripe with the 12-24mm f4 was its build quality, or lack thereof. The only lens I ever owned where the plastic (not rubber) zoom/focus ring band split/dried/disintegrated within a few years, where the mount screws loosened all on their own, and the aperture flat cable failed after quite sporadic use (big design fault).