I am not going to repeat any review/test with my Einstein 640 strobe unit: there are so many already posted online.   My goal is to share here results of the real, in-studio tests of flash speed duration: nobody has calculated the speed of water drops firing from a glass, even Rob’s test with spinning disks was not enough for me. Obviously I knew that Einstein strobes will be fine at freezing splash, but I did not know if the flash power at that duration will be enough for my work. The full article is on the blog, as usual: