Using different lenses for photographing buildings, I found that the lens correction filter options in Photoshop CS6 work GREAT. Simply brilliant for the the Sigma EX 10-20mm 4.5-5.6 wide angle zoom.
But where would I find af filter for corretcing my old SMC Pentax Shift 1:3.5 28 lens? And - if I find it - how will I install it in photoshop CS6?
Jens in Denmark
You can download and install the Adobe Lens Profile Downloader and it looks like two downloadable profiles are available.