Understanding Aperture and F/Stop
In Focus: Aperture and Its Application in Corporate Videos
According to Jerry Uelsmann, “the camera basically is a license to explore.” It is an eye to capture moments and the world and to transform the conceptual into the visual with creative flair. That’s why Aperture is so important. By mastering aperture, you are able to give your audience the cinematic experience they deserve – clear, precise and properly lit. You are able to create a richer cinematographic experience with this arsenal of specialist tools in your tool bag.
Aperture pertains to the opening of a lens’s diaphragm through which light passes. It is calibrated as fractions of the focal length. Its measuring unit is called an ‘f/stop’ (full stop) because basically, each full exposure value of the aperture differs by one full stop. A Stop in camera nomenclature means a difference of one exposure value, which can either be doubling or halving the amount of light reaching the camera’s sensor. There are a few standard full stops that aperture is rated in: 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32, 45 and 64.
Aperture control and mastery of the many related filming techniques takes years and years to perfect and like so many crafts, there is no end point. Professional camera men would still tell you that they’re constantly evolving. Like many other advanced techniques in cinematography, skilful aperture control separates the pros from the amateurs, so it makes sense to seek professional services when creating your corporate video in order to have your business represented in the best possible light.
Photography versus Filming
Photography and Filming are two sides of the same coin. Films are at their heart, photos. They are created using millions of still images viewed in sequence to create the illusion of motion. So both fields depend upon many of the same foundational concepts, and non more so than the indisputable fact that lenses require light to be able to produce quality pictures.
Whereas in photography, aperture is important as it helps deliver a clear image, in filming, aperture mastery is essential as it allows a camera man to control the depth of field of their image. Although you may be thinking that your f-stop is simple a tool to reduce or increase the amount of light that is going into the camera depending on your environment, the f-stop has other visual effects on your image. Depth of field can be referred to as either shallow or deep, and is essentially how much of the image on the z-axis is in focus. This is a stylistic choice in filming which is used to deliberately generate different extremes of blurriness or ‘bokeh’ from image to image. On most professional cameras these days, we have the ability to control our f-stop, and this is the reason why — you can literally change the entire look of your work with depth of field control.
Importance of Aperture on Corporate Videos
Camera lenses are made to be much like a human’s eyes. Lenses are responsible for collecting light and arranging the collected information into an image that makes sense and is relevant to your audience. The larger the diameter of the aperture, the more light reaches the film or image sensor. Which is why the type of equipment a camera man uses would vary on the type of setting he would be filming.
A corporate video’s uses are many and varied, but in most cases companies use them to promote their brand or product to greater effect. Regardless of the purpose, the possibilities for your video and by extension, for your business are greatly increased with a professionally made video. As discussed, different aperture control can be employed to produce a wide array of artistic effects, but only if you’re working with specialist equipment and specialist personnel, who have a wealth of experience in corporate video.