I am delighted to see that you have added lens profiles for Pentax 645 FA lenses - which is very useful to users of the digital Pentax 645D. However, I (in common with many users of this camera) also use older manual lenses - including the Pentax 645 A lenses and the Pentax 67 lenses (using a Pentax adaptor). This is very common for users of this body. I realise that use of these manual lenses would not appear in the file meta data and could not report aperture or distance info. - so any profile would require manual input of the details. However, I would consider that a great solution that would vastly improve my experience of using ACR with this camera's files. For reference, the lenses I use with this body are Pentax 645 A 35mm, and the following Pentax 67 lenses: 55mm f4, 75mm f2.8AL, 90mm f2.8, 105mm f2.4, 135mm f4 macro, 150mm f2.8, 165mm f2.8, 200mm f4 and 300mm f4 EDIF. From discussions I have had with other 645D users, these lenses all seem to be quite widely used with this body.