The built in lens profile for this lens is not accurate from a vignetting standpoint. Is there a way to get this profile fixed in a future release? If I let the lens correction on for this lens at 100%, there is a very noticable 'light effect' vignette added to the resulting image. The proper vignette correction amount appears, by my eye test, to be anywhere between the 35 to 55 range on the slider.
I'm attaching a raw image with only lens correction / vignette correction set to 0 and 100, to highlight the overcorrection of the vignette for this lens profile. It's easy to see the halo / light effect on the edges of the frame with the correction set to 100.
No Vignette Correction Applied
100% Vignette Corretion Applied
The exposure in the corners looks to be 1/2 to 2/3 stops brigher than the rest of the image.