There are many different types of lens mounts

• PL Mount – Positive Lock
• LPL Mount – Large Positive Lock
• PV Mount – Panavision
• EF Mount – Canon DLSR
• RF Mount – Canon Mirrorless
• E Mount – Sony Mirrorless
• M Mount – Leica
• L Mount- Panasonic
• M4/3 Mount – Micro 4/3rds
• A Mount – Sony “Alpha” DSLR
• F Mount – Nikon DSLR
• Z Mount – Nikon Mirrorless