Thanks Daniel. My lens is in that link -
Samyang 35mm f/1.4 AS UMC 1.0 yes no no
I take that to mean crop factor 1 and geometric distortion is supported, but not transverse chromatic aberrations and vignetting. I’ll be happy with geometric fixing.
On the one hand, the update I did increased the lenses dt is seeing, on the other, Terminal said “Info: root privileges needed for updating the system database.” I don’t like using SUDO if I don’t really understand what I’m doing.
This whole thing doesn’t feel right comparing dt and sourceforge (SF) - the lenses dt is showing are these -
12mm f2.8 - consistent with SF - factor 1.0
14mm f2.8 - consistent with SF - factor 1.0
T-S 24mm f3.5 - consistent with SF - factor 1.0
20mm f1.8 - absent from SF!
85mm f1.4 - absent from SF!
135mm f2 - absent from SF!