Focus: Focus at different apertures

The weather wasn't being to kind when I got home from work today which put a damper on my planned excursion for this exercise! Not wanting to get held up at this stage I searched the house and came up with a row of bottles as a substitute. The object of the exercise was to observe the limits of sharpness at specific apertures.

The camera was fitted with a 35mm F2 Prime lens and mounted on a tripod. Aperture priority was used and focus is set where the first tall bottle meets the last short one.

The first shot was taken with the aperture set to F2. The second had an aperture of F8 and the final shot an aperture of F22.

The limits of sharpness have been marked in red on the pictures. They all radiate out from the point of focus.