The Sony 50mm f/1.4 is the smallest and lightest of the 50mm lenses on test, and it has a very neat, uncluttered design. It's also got the best set of depth of field markers, covering f/4, f/8, f/16 and f/22.
It's much less sophisticated to use, though. The autofocus is pretty fast, but there's a lot more mechanical noise than you get from the others.
You can turn the focus ring manually in autofocus mode, but the movement is quite stiff until you switch to true manual focus, where it becomes lighter.
It has a much longer focus travel than the others, which means it's possible to focus much more precisely, and this is where the extra depth of field markings will prove their worth.
It's a very practical lens for hands-on photographers, then, but it's not finished to the same standard as the others, and the optical results are actually pretty disappointing.
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