Construction is very good with rubberized edge ridges for easy installation and removal, especially important for a filter that will only be used for night sky photography. Light transmission is good with no apparent chromatic aberration from edge to edge. The filter doesn't easily attract dust and cleans well with a quality microfiber cloth. While I've only taken a few night test shots, the filter appears to be very effective, especially for sodium vapor light pollution. One more item of note - the filter case is the best I've ever received with a filter of any price!
29/08/2019
Hello! I recently received this filter and have only used it once thus far. It definitely makes a huge difference in the lighting when used for color images when doing night photography. I am going to try it again this weekend and will update after a more extensive trial & some B&W images as well. I have some questions about clarity that my initial test didn't quite clear up, which may have just been related to focus points/depth of field. Should that test go well, I'd adjust to 5/5 stars. There aren't many options for this style of filter and this was the most affordable one I found on Amazon.
13/06/2019