One of the primary reasons many photographers use skylight and UV filters is to protect the front glass element of the lens. You can use this technique with any focal length zoom lens, from a 10-22mm wide angle zoom to a 100-400mm telephoto zoom.įilters are placed over a lens for several reasons. Photo (#16) of the Las Vegas Strip is an example of this. This creates a double exposure effect where the sharply defined scene appears to be combined with its own zoom abstraction. If you use one full second, you can experiment with only moving the lens for part of the exposure. That interval allows enough time to manipulate the lens. How long should the shutter speed be? I usually use between 1⁄2 second and one full second. Therefore, I recommend focusing on the subject at full telephoto and then during the slow shutter speed move the lens from the telephoto position to the wide angle. In the former, the abstraction has sharply defined lines while in the latter the image devolves into what I call “colorful mush.” This is usually not what you want. There is a difference between an abstract that is blurred due to movement versus blurred due to being out of focus. That means if you create a zoom abstraction and move the lens from wide angle to telephoto, the image will probably not be sharp. The lens has to be refocused to take a sharp picture. When you focus a zoom lens at the wide angle position and then zoom in to full telephoto, the focus is usually lost. However, there is one consideration that’s important. It doesn’t matter if you zoom from wide angle to telephoto or the opposite in terms of abstracting the image. The lenses have a flexible structure that allows you to bend and angle them in such a way that the lens is oblique to the plane of the sensor, thus creating an area in the picture that is sharp surrounded by areas that are blurred and distorted. The lenses fit directly on the camera body, and they are variations on the idea that sharpness isn’t necessarily the only way to fly. In addition, the company offers a lens swap system that is comprised of small plastic lenses used in conjunction with the Composer. ![]() There are three models available-the Muse, the Composer, and the Control Freak. When the first one was introduced, I wondered why someone hadn’t thought of this sooner. The Lensbaby ( is an innovative lens design that has a lot of creative potential. Here are some fascinating effects created by add-on optics and by the nature of light as it interacts with glass. In some cases, we purposely alter reality for an artistic purpose, and other times we are the victims of the laws of optics and have to deal with factors that are beyond our control. Some of these effects are desirable and some are undesirable. The way light interacts with glass and with the metal blades of a lens aperture is different than how it interacts with our eyes, and it’s noteworthy to mention some of the effects that can be created when taking pictures with various lenses. Lenses don’t interpret the world as our eyes do. Light And Lenses, Plus A Unique Point Of View
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