This is a very nice camera filter from a reputable company. It is made of high-quality optical glass with multi-layer nanometer layers of ultra-thin and ultra-light materials. The frame is very light and small compared to the other filters I have for my camera. This is a special effects filter mainly suitable for portraits to blur the details of your subject. This is a 1/4 diffusion/fog filter and the changes from a regular, unfiltered lens are minimal. K&F makes the same filter in smaller and larger gauges (ie 1/8, 1/2). So you have to decide what level of diffusion you want for your specific studio shoot/set. I thought 1/4 would be a good place to start experimenting with this type of effect. This filter also included 3 nice microfiber cleaning cloths. (It would have been nice if there was a resealable/reusable bag though.) The price is very good considering you are getting a quality multi-coated glass filter from a good company. In my various experimental shots I think this filter has a lot of potential for portraits and still lifes. I want to try it on macro shots too. In my various experimental shots I think this filter has a lot of potential for portraits and still lifes. I want to try it on macro shots too. In my various experimental shots I think this filter has a lot of potential for portraits and still lifes. I want to try it on macro shots too.