Water Droplet

I was hoping to try another technique for my water droplet photography this afternoon using Sony's HFR (high frame rate) which gives you 1900 frames per second but at a much reduced pixel count ( ie much lower quality) However, I ran up agains the problem that you can only do this in autofocus mode whereas with water droplet photography manual mode is needed as until the droplet forms you have no clear focus point. I therefore had to resort to my usual flash photography.;