After testing multiple output this filter, I must say I am not disappointed by its quality much praised by photographers. I have found no fault in the image (color, artifact or other) and the extension time corresponds to x1000. For who knows what he wants, it will be exactly what is required.
In the profit storage box is extra, unlike home hoya that I've broken two in my bag, here the box is both better closed, takes up less space and fully filter wrap a dense foam and many protective. A delight. The product is well worth the 5 stars, no complaints.
