Exercise 3: Focus at different apertures

The objective for this exercise was to take 3 photographs of a scene from the same position with each image framed identically to the others.
Each photograph was to be taken at different apertures. The first photograph was taken with the lens aperture wide open, the second one with the aperture at mid range and the final image with the lens set to its minimum aperture.

All images were taken in available light with the camera in aperture priority using manual focus

At first glance there seems to not to be a great deal of difference between the three images.However on closer inspection and with the aid of zoom on a computer, the differences in depth of field between each of the images is noticeable.mainly between the f5.6 and f16 images where depth of field is notably deeper at f16 . taking the aperture up to f32 doesn't really produce a sharp image.