Oversized lenses are those with a field of view angle of 90 degrees or more along the diagonal of the frame (that is, wider than the human eye) and a certain focal length:
1.for cameras with APS-C sensor - from 15 mm and less;
2. For full-frame cameras - less than 24 mm.
Such optics are clearly associated with distortions - perspectives and geometries. Here, these lenses are divided into two classes: fisheye (fisheye) and rectilinear (without distortion).
Fisheye "chip" - just the same in distortion. Images obtained with its help look rounded, deformed, and circular “fish eyes” give a round picture at all. Rectilinear lenses, although they maintain straight lines, but still distort the scale and “stretch” round objects at the edges of the frame.
But, despite the distortions, ultra-wide-angle lenses do their job and are popular with photographers. And here are five reasons.
1. Everything will be included
“Over-widths” allow you to shoot large objects and interiors and are great for showing the distance between the foreground and background. A frame made with such optics includes much more space than any other lens can provide. Therefore, they a
re often used in architectural, reporting, wedding photography.
You just need to remember the indispensable distortions and know how to minimize them when shooting and post-processing.
2. Ideal for a landscape photographer
The ultra-wide-angle optics are exceptionally well suited for landscape photography. It allows you to capture the terrain as fully as possible (from flowers on the ground to the clouds), and the distortion, which is a problem when shooting vertical lines, can give the photo additional depth, drama and dynamics.
Landscapes with sky work very well for the “over-wide” ones - dawn and sunset, thunderclouds, cloud patterns serve not only to frame a beautiful landscape, but to be a full-fledged part of the composition.
3. And for astrophotography too
The sky itself can be a great storyline for a photo. And here the widest viewing angle will definitely come in handy. The main thing is to remember that when shooting the starry sky or the northern lights, you will have to work in very low light conditions. Therefore, the lens should have a large aperture and provide high sharpness over the entire field of the frame.
4. Interesting prospects
A short focal length and a wide viewing angle give distortion of perspective: objects in the foreground seem larger, in the background - smaller than they actually are. This allows you to achieve interesting and spectacular shots with certain scenes, for example, long-distance roads.
5. Reason to come closer
All objects in the frame that are in the middle and background will look small. Therefore, if you need to highlight an object or person, you need to come closer to it. Moreover, the "super wide" allows you to shoot as close to the subject in the foreground as possible, without losing the rest of the picture.
But, again, it is worth remembering distortion, and if you make portraits on such optics, then with caution - “over-widths” can greatly distort the proportions of the face and body. Therefore, when working with such a lens, people are recommended to shoot at full height, making them part of the rest of the plot - so they will look more natural.
Ultra Wide Angle Guidelines
1. We have already listed the main plots, pros and cons of such optics. It is worth adding that you need to get used to the “over-wide”, practice in order to understand what it can and know how to use and how to neutralize distortions.
2. Distortions of perspective can be corrected in a graphical editor or used as an artistic device.
3. Distortion when shooting with a fisheye lens can be significantly corrected by placing the horizon line in the center of the frame.
4. You can correct distortion quite well in Adobe Lightroom by applying the appropriate fisheye lens profile.
5. Due to the wide viewing angle, very bright / lighted and very dark / shaded objects / places will fall into the frame, that is, there may be problems with exposure. The HDR feature can help here.