How to Get More Flexibility from a Digital SLR Wide Angle Lens
A digital SLR wide angle lens provides a wider perspective and gives an exaggerated distance effect in the image. This lens also has a shorter focal length, which gives you the ability to get much closer to your subject. Although it offers all these possibilities, the lens is much more difficult to work with compared to a telephoto lens. Here are a few tips which will provide more flexibility while working with a digital SLR wide angle lens:
As the wide angle lens is capable of including a lot of the scene, it becomes important to correctly compose your shot so that you do not take the attention of the viewer away from the intended subject matter. It is best to organize the shot into distinct layers or place objects in the foreground in such a way that they guide the viewer into the depth of the image and across it.
Lessening Converging Verticals
A common problem with wide angle lens is that any parallel lines that are vertical in the image tend to converge. You cannot totally avoid this problem, but it can be lessened by pointing the lens more towards the horizon. This will capture quite a bit of the ground, but it can be cropped later.
Distance from the Subject
If you want to exaggerate the depth in your image and bring out the differences in sizes of the objects that are near or distant, then you need to take your shot at a very short distance from your subject. As the lens offers a small focal distance, this will not be a problem.
The use of a polarizing filter with a wide angle lens should generally be avoided as you will see the changing effect of the polarizer across the frame. To overcome problem of different intensity of light over a vast landscape, a GND (Graduated Neutral Density) filter is usually recommended.