Some are willing to pay the price for a Lada, but expect the quality of a S-class and then find the fly in the ointment. What you get for 33 here is for me a very good value. The quality of the filter disks is absolutely ok, chic bags even get to and although the filter holder go somewhat tight, but quite fulfill their function. I use the filter on a Canon EOS 6D full frame camera with a 24-105mm 4L lens. If you do not adjust the white balance on Automaitk but like most professionals in daylight, then you also get to excessive magenta cast in the ND filters. Everything else can be very nice to adjust the raw converter his personal wishes. The ND filter correspond very closely the assets 2 - 4 - 8 times life extension. With the 3-ND graduated filters you get off to a very nice transition between a darkened sky and landscape. But that feels any different. Cokin example indicates that the filters up to 28mm Wide (Full Format) function and may lead to shadowing at smaller values. This is also with this filter set that way. Since in this set but 2 filter holder lie, you can Shorten a filter holder so, so that only one filter disk fits into and is so to 24mm WW has no shading. For fine motor hobbyists should not be difficult. A loss of sharpness I could not find up to an increase of 200%. For serious photographers is this Chinese plagiarism represents a good compromise to the original French and is always worth more than money.