For a novice photography, is DxO pureraw necessary if I only use lightroom? The 16mm RF lens that I bought for my new canon r8 (I mainly do landscape, city, street, convention, gunpla photography) has really bad lens distortion and vignetting, and I heard the lens corrections from DxO Pureraw are superior to lightroom. Is this true? How does it compare to lightroom and does it make any difference for a novice photography in the end?
Mostly the DXO lens correction profiles being the best is marketing and a way to differentiate themselves vs. Lightroom. Lightrooms lens correction profiles are usually supplied by the manufacturer. I know Jared Polin mentioned that was the case with the new Canon 10-20mm lens at least.
For new and honestly most photographers the difference in lens correction profiles will not make a difference in their work. We are talking about very minor differences between LR and DXO lens correction profiles.
Enjoy your new lens and if you want check out the free trial of DXO but I would by no means consider it remotely necessary.