Samyang 7.5 KenW profiles
Try this, from some prior thread, worked for me:
I placed these files(unzipped) in C:\Users\USER_NAME\AppData\Roaming\Adobe\CameraRaw\LensProfiles\1.0\Downloaded\
Replace USER_NAME with your windows 7 username.
In LR, it shows up under 'Make' Panasonic.
|Waffles with fruits by Coolinarka|
from Food photography (desserts)
|Vestrahorn Frozen Reflection by Will B Milner|
from Ice cold