Photography is mainly about light. To let the camera see what a photographer wish, he/she has tools controlling how much light reaches the camera sensor as the aperture and shutter speed controls. With a little light, a photo will be too dark. While with too much light, it will be too bright. In both images some details will surely be lost. Photographer uses aperture and shutter speed to achieve the proper exposure, while taking into account some important side-effects he/she should be aware about.
When shooting, photographer’s goal is to expose the proper weigh of light to the camera sensor. If they provide insufficient amount of light, the photo will be too dark. If they expose too much light, the photo will be too bright. The larger the deviation from the natural exposure is, the more chance they have to lose image data hopelessly. Software post-processing are there for fixing the perceived exposure, but it cannot re-create the same lost while shooting. For example, a very common nature photography problem is losing clouds in the day light. When it is overexposed, the whole sky becomes completely whitish, right along the clouds cannot be distinguished any more. On the other hand, with underexposure, shadowed parts of the subject lose details and become completely black. Software cannot rescue these details, because they do not exist in the original image one.
The Three Fundamental Camera Settings
The three most important camera settings are shutter speed, aperture, and ISO. All three of them control the brightness of a photo, although they do so in various ways. On other hand, each of these brings its own side effects to an image. So, it’s quite an art to learn exactly how to balance all three for a given image. Top Photography Colleges imparts these knowledge thoroughly.
- Shutter speed: The amount of time one’s camera sensor is exposed to the field while taking a picture.
- Aperture: Represents a pupil in one’s lens that can open and close to let in various amounts of light.
- ISO: Technically it is bit more complex, but similar to the sensitivity of film using for taking pictures in different lighting modes.
Right balance of apparatus
As a photographer, it is needed to decide the right exposure configuration. Modern cameras in automatic mode provide them with a good proposal, that is an aperture and shutter speed combination to achieve the right exposure. Depending on photographer’s goals, he/she evaluate this combination. Does this achieve the desired depth of subject? Is the shutter speed quick enough to avoid motion blur, or slow enough to make it? Photographer can make adjustments if necessary. For example, to increase the depth of field, reduce the aperture and increase the shutter speed.
Using light for creating timeless portrait photographs or visual magic, anticipating the flight of a dragonfly or pouncing of a jackal just to capture it through one’s lens are some of the joys of learning photography. The Photography course at Top Photography Colleges in Delhi covers everything from fundamentals to specializations.