Here’s a still life exploring light and depth of field. The subject is a couple of ridged vegetables, luffa acutangula. The vegetables have ridges — on one the ridges are straight, and the other has twisted ridges.
The first photo is from the side, so that most of the length is in focus. The indirect light is from the rear. The front is in focus, fading at the rear.
The second photo is taken from the flower end of the vegetables, with the near end in focus. I increased the ISO to 5000 in order to take the photo at 1/60 second and f/13. The vegetables are about 2′ long.