The Walimex is well finished and brings otherwise not affordable focal length. Aperture 8 causes high ISO, but rather a grainy image than none. Blitzen improved the situation at close range eg bird photography, to get good results. Recommendation here would be the YONGNUO Speedlite YN560 - Manual Aufsteckblitz guide number 58. See also "Secrets of Digital BirdsPhotography" byJ WH Majoro.
I do not want to miss the pipe and it would buy again.
See also customer images.