I used the 70-200mm Sigma Marco lens and it set on 100mm.
I used a half filled fish tank and two strobes. one left and one right in a 90° angle to the camera. The strobes have been set on the same power level. I used the fastes shutter speed possible - 1/200s and I guess f/11 for wide range and maximum of sharpness. The selftimer was set on two seconds. So I hold the apples in my hand pushed the released and threw the apples into the fish tank. So it is all about timing! But after a while you get the hang of it.
This came out beautifully! I love how you set it up - pictures of fruit splashing in to water are pretty common, but I really love this spin on it. Makes it something different. The solid black background is fricken awesome so much detail!