72mm Variable Lens Filter ND32-ND512 No X Spot Cross-wire Ultra-thin

SKU: KF01.1473

Hi guys, how do i work out the correct filter thread size>? i have a canon 85mm prime... and a 70-200mm zoom lenses (does it work on zoom too though)?
Answer Question
77mm variable ND filter you are asking, Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "Ø" (diameter) symbol. For example: Ø77 = 77mm lens thread size. hope it helps.