40.5mm Variable ND Filters ND2-32 Adjustable Fader Neutral Density ND2 - ND32 Filter, NO Spot X Black X Issue, MRC 28-Layer, Ultra Slim, Waterproof

SKU: KF01.1163

Q
What size would i need for my Voigtlander 17.5mm f0.95? Also, would it be compatible?
Answer Question
A
The size you require is usually stamped on the inside of the lens cap.