Digital cameras are confusing to a lot of new users. In this basic guide to digital camera technology we hope to try to give digital beginners at least some basis to use in deciding which digital camera is appropriate for them. When shopping for a digital camera it's at least good to know what the basic terms like white balance, pixel, ppi and dpi mean and how they affect image and print quality. It's also important to know the difference between things like optical zoom and digital zoom as well as the advantages and disadvantages between storage formats such as Compact Flash (CF), Microdrives, Sony Memory Stick, Secure Digital (SD), Multimedia and camera interface technologies such as USB 1.1, USB 2.0 and Firewire IEEE 1394.
Welcome to Digital Photography School - a website with simple tips to help digital camera owners get the most out of their cameras.
Photoxels is first and foremost a digital photography site where you will find digital photography tutorials written in easy to understand language. Our One-Pager digital photography tutorials will help you select the digital camera that is best for you and make sense of difficult technical concepts. Each digital photography tutorial is short, can be read in one sitting, and is immensely practical -- which means you can put what you have just learned to use immediately. Enjoy!
New to photography? Just got a new camera? Maybe you're brushing up on your theory. In any case, you have found a wonderful creative outlet. Photography is an art that can be picked up in a day and continue to inspire as the years go by.
White balance (WB) is the process of removing unrealistic color casts, so that objects which appear white in person are rendered white in your photo. Proper camera white balance has to take into account the "color temperature" of a light source, which refers to the relative warmth or coolness of white light.
The term ‘aperture’ refers to the opening in the lens that lets light into the camera. Adjusting the aperture value changes the size (diameter) of the aperture, which will affect the amount of light that reaches the imaging sensor in the camera (the digital camera equivalent of film). Obviously, if you set a wide aperture a lot of light will be allowed to reach the sensor, whilst setting a small aperture reduces the amount of light that reaches the sensor.
The term ’shutter speed’ refers to the time for which the camera shutter is held open while a photograph is being taken in order to allow light to reach the image sensor (or film in a non-digital camera).
The ISO figure indicates the sensitivity of the camera’s imaging sensor to light. In the Basic Modes examined in the previous blog entry the ISO speed is automatically set within ISO 100 - 400 as appropriate to the light levels. However, when using the Advanced Modes the Canon EOS 400D has the following ISO Speed options: 100, 200, 400, 800 or 1600.
It would be easy to draw the conclusion that one need only focus on the light and let the shadows fall where they may. This would be a major mistake -- for light is nothing without shadows. Shadows are not simply a dark mass that borders the light. Rather, shadows are an entity as alive as the light. It is the shadows that shape the light, that draw attention to the light, and that integrate with the light to produce striking photographic opportunities. If we are to reach our full potential as photographers, we must think as much in terms of mastering the shadows as we do of mastering the light.
Once you grasp the basic principles of focusing your photographs will take on a whole new depth. When you cast your eye over a scene, everything in it seems more or less equally sharp, but sometimes in the finished shot only part of the subject appears acceptably sharp. This zone of sharpness is called the depth-of-field, and it extends in front of and behind the point that you actually focused on.