I've recently switched from all my previous filters and have landed on using Kase Filters. In my over 30 years of professional photography, I have tried hundreds of filters, some really good, some really bad, but I finally feel I have found the filter system that best suits my needs as a professional nature photographer. I can and will build on the system, but I am starting with the basic filters I require. The Wolverine system fits all of my requirements, size, quality, and portability, all while being simple to use. Thank you Kase for making my photography more simple and thus more enjoyable.