Macro Musings

Foul weather in Cornwall at the moment (it is November, so no surprise there!). Not tempted to go in the water but still wanted to take photos, so I spent some time on the foreshore of my village Flushing looking at Flat Periwinkles (Littorina obtusata). This species is very common, and the only snail that actively crawls about above the waterline. The trouble with macro photography is that with a small aperture, the depth of field is large and everything is in focus, but this includes the usually cluttered background that takes away from the subject. With a large aperture, it is possible to get an aesthetically pleasing, soft focus bokeh background, but the depth of field is much smaller, and too much of the subject is blurry (see the pic on the right). I tried my hand at focus stacking, in which the camera takes a bunch of photos each with a different part of the subject in focus, and then merges them so the depth of field is greater (whilst still having the out-of-focus background). This proved too difficult with a handheld camera (especially on my knees in seaweed). I therefore reverted to ‘normal’ manual photography and it was fun to practice. However, I did not manage to improve on my best Flat Periwinkle photo I took when I first got my Olympus….

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