I bought a pair of V3 360 degree lenses for some cannons I have.. only to realize I have what may be a pair of v1 and a pair of v2. I need lenses for both. Preferably 360. I need some help figuring out what I need though. One pair has 2 screw holes only (plus inner screw), and one pair has 2 screw holes and 2 flat tab holes, but they're inner (not v3 compatible).
Thx!
Thx!