Hi u/samzkri90 - for a 22mm FOV (35mm equivalent), I recommend the $499 Venus Laowa 7.5mm f/2 rectilinear lens ($599 for the 7.5mm T2.1 cinevized version).

Here are a few examples of the image quality this lens can produce when mounted on the OG:

• Trešnjevka at night - BMPCC OG with Laowa 7.5mm f2 by SEKILE (1080p)

• OG BMPCC + Laowa 7.5mm T2.1 | A different road trip across Canada by PL Arseneau (1080p)

• Original BMPCC + Laowa 7.5mm F2 - Shooting Raw video by Jose Torralba (upscaled to 4K)

• BMPCC (OG) in 2021with LAOWA 7.5mm T2.1 by NimbusPix (1080p)

• BMPCC (OG) with Laowa 7.5mm T2.1 by NimbusPix (1080p)

This is a native micro four thirds lens, so no adapters or speed boosters would be required.

Hope this is helpful and good luck finding the right wide angle lens for your needs!