used this 52mm filter on my old classic Canon EF 50mm 2.5 Compact Macro lens to take the picture of the faux candle. I used flash with standard priority and exposure set to 1/30 second at f/16, ISO 1600. The filter came packed inside a sealed plastic bag sleeve inside a reusable plastic case for storage. The filter is machined to be well threaded and it fit perfectly onto a clear filter I have permanently affixed to my lens. The edge of the filter has grooves for an easy-on/off grip. Because it uses Black Diffusion, dialing up or down the "black" or even the "clarity" setting when opening a raw file in Photoshop can render a dramatic variability of the diffusion effect. The 18 Multi-Layer Coatings can help reduce glare from flash highlights on shiny surfaces such as glass or shiny metal. The filter gives a soft diffuse effect on the subject which is also effected by the light source used. This is a nice filter to have when you want to add some diffusion, softness or reduction of glare in photos or video. It can add an element of drama or a cinematic quality. The filter came with 3 sealed microfiber cloths to help keep it clean.