6. Finally, the camera set up. First was the focus. I placed my strawberry in the water about where I would drop it and focused. Then I switched to manual focus to lock it in. Next, I needed as wide an aperture as possible. With this lens, that was f/5. I bumped the ISO up to 1000, which allowed me to set the shutter speed to 1/6400 sec. Click the next button to see the final images.