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Lens for landscapes
QI have recently been using a macro lens for work when I needed close-up images, but I’m looking to get into landscapes and outdoor shots with a much wider angle. Can you recommend a good, inexpensive Canon DSLR lens? Mateoj, AP forum
AI’m making the assumption that you have an APS- C-sensor Canon EOS DSLR rather than a full-frame model. You may find that the standard kit lens you probably have goes wide enough for a lot of your landscape needs. You can’t really go wrong with Canon EF-S 10-18mm f/4.5-5.6 IS STM (£199) if you need to go wider. For constant-aperture zooms, the Sigma 10-20mm f/3.5 EX DC HSM (£329) and Tokina AT-X 12-28mm f/4 Pro DX (£449) are candidates, but are quite a bit more expensive.
QWhen people talk about back-button focus they are often quite evangelical about it, but I’ve tried it and I think I must be missing something. I tend to shoot in AI autofocus on my Canon EOS 7D Mark II, so when I want to take a shot I focus on the subject, hold the shutter down halfway, and wait until the composition is just past what would have been good, and then I finish my click. If I’m in repeatshot mode, I then just hold the shutter down and the camera follows the object in focus based on the relevant tracking options. What’s different about backbutton focus (outside of when the exposure is measured)? Tony, AP forum
AIn the end, the focusing technique that works for you is all that matters. That said, while back-button focusing (BBF) is not for everyone, it certainly offers great benefits if you can manage to adapt to it.
Fundamentally, BBF relocates focus activation from the default half-press of the shutter button to a thumb- operated button on the back of the camera (Focus On, on the EOS 7D). This means the shutter button only releases the shutter, making it more responsive and you won’t lose control of the focusing for the next shot. Once mastered, your camera handling can be more fluid and you can concentrate much more on your framing.
BBF means you only need to lock focus once on a static subject, leaving you free to experiment with the composition without having to re-focus for each subsequent shot. You can use BBF for either single-action AF or continuous AF (AI Servo). For the latter, the Focus On button becomes a toggle to activate/deactivate focusing, retaining the correct focus if your subject stops moving about. If the subject moves out of focus again, you just press the AF On button to recommence focus tracking. You can also assign priorities for AF point position or, for AI Servo, the initial AF point. Q&A compiled by Ian Burley
Canon’s EF-S 10-18mm f/4.5-5.6 IS STM is an ultra-wideangle zoom lens