Wide Angle Lens give expansion of the distances plus it provide greater angle of view, shallow depth of field and have a considerably faster focus. In our previous article When to Use Wide Angle Lens and When Not To; we discussed the impact of expansion of the distances and in this article on advanced tips on Wide Angle Lens we will discuss the other points.
Wide Angle Lens : Greater angle of view
The important consequence of the use of short focal lengths is the increase in angle of view. This means that with wide angle lens, our field of vision broadens, we can see more in our photographs. From the compositional point of view, this means that, with a wide angle lens can capture more context. You may be too far from the main subject and at the same time take pictures of many things in the background. In fact, this is one of the reasons why in reportage and street photography are widely used lenses are of short focal lengths. The downside is that you have to be so much more attentive to the background. As you know, a beautiful first floor can be totally ruined by a messy background. Increasing the angle of view, increases the risk of introducing a lot of crap in the frame. To learn how to monitor your own backgrounds, you should consider to blur the background.
Wide Angle Lens : Shallow depth of field
The depth of field is controlled by the size of opening , but it also affects the focal length. Shorter focal lengths greatly increase the depth of field. Therefore, photos that require a very high depth of field, such as landscapes; benefit of wide angle lens. Even without using too high values ??of openness, these lenses allow you to have scenes entirely clear from the first step to the object farther away. With a focal length of 18mm on APS-C sensor with f/11 aperture and focusing distance of 1.45 m, you are already have the chance to focus to infinity. Clearly, this means that if you want to get a nice blurred effect very pronounced you do not wanna make use of wide angle lenses. This contradicts the point – background blur mentioned in previous paragraph. Post processing can help in this point, to some extent.
Wide Angle Lens : Ease-of-focus
Wide-angle lenses have a focus that is considerably faster and easier than telephoto lenses. This is mainly due to the large depth of field that we mentioned above. The depth of field of a telephoto lens makes it difficult to focus on exactly where you want it, especially with wide apertures. In fact, in these cases, a slight difference in the distance from the lens and the subject, moving the point of focus of a few centimeters, you find yourself with your point of interest is blurred. With wide-angle lenses, this does not happen.