Lens corrections in Lightroom for legacy lenses

[ianmarsh]

I've acquired a nice collection of old Olympus Zuiko OM manual focus lenses (the same ones I used back in the early 1980s when I first started taking photos). I'm using them on a Sony a7. Now most are fine but the 24mm f2.8 has some noticeable distortion and strong vignetting. I am used to getting Lr to add profile corrections for Samyang lenses on my Fuji bodies via the menus but there aren't any for my Olympus lenses. Does anybody know if there are downloadable profiles available, or if there is somebody more expert than me that can share their settings for my lens/body combo?