Last week I took a well-deserved break (at least in my eyes) and went on holiday to Cornwall. Whilst away I took this photo that I wanted to share with you. The reason for sharing is not that this is a great Landscape image (I have a much better one taken at sunset rather than on an overcast day, that I will share soon). No the reason for sharing this is that it illustrates just how much depth of field can be achieved with smaller sensor cameras.
This image was taken using a Sony RX10 which has a 1” sensor. This is slightly smaller than the micro 43 sensors but somehow Sony has managed to cram 20Mpixels onto it. If you were looking at the print of this scene you would say that the image was in focus from the foreground to the background. It’s only when you view the image at 100% magnification on the screen that you see the distant lighthouse is very slightly outside the depth of field but is still acceptably sharp. Also the flowers nearest to the camera (literally inches from the camera) are out of focus but again this isn’t objectionable. Interestingly you don’t notice either of these points on the print as the image appears very natural.
What really makes you stop and think though is that the Aperture used to achieve this is f/5.6. The trick to this if there is one, is where you place the point of focus. Here I was focussing on the hillside just beyond the foreground flowers (probably around 10 feet from the camera. Had I tried to get all the flowers in perfect focus I would have lost the distant lighthouse. This compromise appears to work very well.
I hope this gives you food for thought about depth of field and needing to use very small apertures.