Admittedly, I've never used a Black Diffusion filter before, so this was a bit of a learning experience. The filters themselves come well packaged in a nice plastic sleeve to protect them. They simply screw onto the end of your lens. The filters have nice handles that make it easy for you to put them on and take them off. The scope of delivery also includes some glasses cleaning cloths.

These filters fit easily onto my Canon EF lenses. I first tried a simple before and after portrait shot. The afterimage was slightly softened and some minor reflective glare was reduced to almost zero. In this case, I liked my after shot better than my before shot. However, it is important to note that the results achieved may vary depending on the lighting.

Next I created a shot with a light source in the background. The result was a bit surprising as I got a slight halo effect when using the filter.

In my opinion, the effects of this filter can be subtle or more pronounced, and that depends on how you set up your shot and where the light source is. I found these filters to be a pleasant surprise. There will be a bit of a learning curve for me in deciding when to use this.

This is a high quality filter set that allows you to add some interesting blur effects to your images.