Food for Thought: Choosing and Using DSLR Lenses

Blurred backgrounds draw viewers to your subject.

Cluttered, in-focus backgrounds distract a viewer's eye from the main subject. Pleasingly soft backgrounds are the solution and a wide lens aperture (a lower F number) makes it happen. Lenses with larger maximum apertures, often described as fast lenses, give you added freedom to isolate your subjects—directing viewer attention to precisely where you want it. Fast lenses and low-light shooting also go hand-in-hand. Lens: Tamron SP 28-75mm F/2.8 Di-II at F/2.8, 1/1250th sec. ©Andre Costantini


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