Leaderboard

I will say that even though the Beastgrip adapters are made for phone use, they actually have very good build quality and the newest versions have pretty decent optics, with 1.33x being better corrected than the 1.55x. They also have good front filter threads - the 1.33 uses 58mm and the 1.55 is 62mm. Once you get them properly attached to your lens, they aren't going anywhere. The first versions are not as well corrected, but that may be what you are looking for. The build quality seems consistently good across all models and versions. I'm guessing you could find some on the used market for reasonable prices, as they aren't super expensive to begin with.