Ultra-wide zoom lenses are the thick finish of the wedge, at the very least on the subject of viewing angles. With zoom ranges beginning at simply 8mm for APS-C format lenses, and 11mm or 12mm for full-frame, you possibly can shoehorn huge areas of a scene into the picture body. It’s nice for taking pictures sweeping landscapes or structure, and arguably much more helpful when taking pictures indoors, the place house is proscribed and your again’s up in opposition to the wall.
Another key attraction of ultra-wide lenses is you could create photos with extraordinary perspective results. Get in near the principle topic in a scene and you possibly can massively exaggerate its relative dimension, in opposition to a shrunken and quickly receding background. Parallel strains seem to converge at alarming charges and photographs usually get a correct wow issue.
Another bonus is that brief focal lengths equate to very large depths of area. Unlike in portraiture, the place it’s typically beneficial to blur the background, wide-angle lenses allow you to maintain very shut topics and the distant horizon concurrently sharp.
Some lenses ship a 180-degree viewing angle however these are curvilinear or ‘fisheye’ optics. They’re famend for their excessive barrel distortion. By distinction, the entire lenses in this round-up are rectilinear, aiming to maintain distortions to a minimal.
It’s generally stated that photographers typically solely use one of these lens at or close to its shortest focal size. However, many ultra-wide zooms give nearly no distortion at mid-range to lengthy zoom settings. You can subsequently get pleasure from a lot much less distortion in the direction of the lengthy finish of the zoom vary, particularly in contrast with utilizing a ‘standard’ zoom lens at an identical focal size.
Most APS-C format ultra-wide zooms have variable aperture rankings, with their widest accessible apertures shrinking towards the longer finish of the zoom vary. By distinction, most up-market full-frame lenses are constant-aperture designs, sustaining both f/2.Eight or f/four widest apertures in any respect accessible focal lengths. Naturally, combining vast viewing angles with vast aperture rankings requires very large-diameter entrance components, particularly for full-frame lenses.
Especially in the full-frame camp, many ultra-wide lenses have significantly bulbous entrance components that protrude from the entrance of the lens barrel. For bodily safety, in addition to to scale back ghosting and flare, they subsequently have a built-in petal formed lens hood. The similar association is used in the ultra-wide Sigma Eight-16mm APS-C format lens.
A draw back is that these designs don’t allow filters or a filter holder to be screwed into the entrance of the lens barrel. However, Lee Filters markets an SW150 Mark II filter system with customized adaptors to suit numerous ultra-wide zooms together with the Canon 11-24mm, Nikon 14-24mm, Sigma 12-24mm, Tamron 15-30mm and Tokina 16-28mm lenses. This lets you use neutral density and ND grad filters, in style particularly for panorama and architectural pictures.