Originally posted by Just1MoreDave Can water droplets really be that fast?
A droplet that has travelled 20cm from detachment would have a speed of about 2 m/s and it would advance by 0.25 mm during 1/8,000s. The physics is straight forward:
Distance (m), Speed (m/s), Distance (mm) travelled during 1/8,000 s
0.1 m, 1.4 m/s, 0.18 mm
0.2 m, 2 m/s, 0.25 mm
0.5 m, 3.1 m/s, 0.39 mm
1 m, 4.4 m/s, 0.55 mm
2 m, 6.3 m/s, 0.78 mm
Simply, even with a shutter speed of 1/8,000 s, the droplet will travel a 'fair' distance and it may appear blurry. (You would like the droplet to travel by less than 0.1 mm (even better less than 0.05 mm) during the exposuire time.)
I have done similar photographs in the past in a dark room. I use a fast flash and the exposure time is about the half-life period of the flash, that can be typically much shorter than 125 ms (1/8,000 s). BrianR provided very a very useful example with the Nikon flashes.
Hope that the info will assist.