My evaluation of Green.L. UV filter has proved very positive. It is used as a protective filter for the FZ1000. It fits and indolent only narrowly on. The lens cap can be easily attach it. A filter-compensation is visibly present. Vignetting, loss of sharpness, focus problems or amplified occurring reflections I can not determine in conjunction with the FZ1000. I usually have the use of additional filter avoided. But in the high-priced FZ1000 already recommended the use of a lens cover. The camera comes then usually no lens cap to the camera bag and is faster to use. The filter is supplied in a plastic box.