Our resident Nikon expert Jason Parnell-Brookes answers your questions and solves your problems. If you’d like Jason to come to the rescue regarding your Nikon-related question, email it to firstname.lastname@example.org. Please note that we reserve the right to edi
Jason answers your queries on everything from selecting an ISO to buying a new lens
Should I stick with my D7200 and Nikon 10-24mm lens, or upgrade to a Sigma 10-20mm zoom or even buy a D600 with a Tamron 15-30mm lens? I want to maximise depth of field for landscapes.
Jason says... The short answer is that if you want big wide-angle coverage with maximum depth of field, stick to your D7200 and Nikon 10-24mm lens. Recent review samples that we’ve seen of the Sigma 10-20mm aren’t really any sharper. The Sigma’s main benefit is its constant-aperture design, which gives you f/3.5 throughout the zoom range. That’s irrelevant when you’re trying to maximise depth of field in landscape shots. The Tamron 15-30mm is a superb lens, but on a full-frame body you’ll get reduced depth of field at any ‘actual’ rather than ‘effective’ focal length. Even so, the reduced depth of field shouldn’t be an issue in wide-angle shooting unless the composition includes very close foreground objects in the scene, and you want to maximise sharpness from the near foreground all the way to the distant horizon.
Ultra-wide lenses give a phenomenal depth of field on DX bodies, even at medium apertures of around f/8