The RAW file format is digital photography’s equivalent of a negative in film photography: it contains untouched, “raw” pixel information straight from the digital camera’s sensor. The RAW file format has yet to undergo demosaicing, and so it contains just one red, green, or blue value at each pixel location. Digital cameras normally “develop” this [...]
A camera’s autofocus system intelligently adjusts the camera lens to obtain focus on the subject, and can mean the difference between a sharp photo and a missed opportunity. Despite a seemingly simple goal—sharpness at the focus point—the inner workings of how a camera focuses are unfortunately not as straightforward. This tutorial aims to improve your [...]
Depth of field is the range of distance within the subject that is acceptably sharp. The depth of field varies depending on camera type, aperture and focusing distance, although print size and viewing distance can influence our perception of it. This section is designed to give a better intuitive and technical understanding for photography, and [...]
Knowing how your digital camera meters light is critical for achieving consistent and accurate exposures. Metering is the brains behind how your camera determines the shutter speed and aperture, based on lighting conditions and ISO speed. Metering options often include partial, evaluative zone or matrix, center-weighted and spot metering. Each of these have subject lighting [...]
A digital camera uses a sensor array of millions of tiny pixels in order to produce the final image. When you press your camera’s shutter button and the exposure begins, each of these pixels has a “photosite” which is uncovered to collect and store photons in a cavity. Once the exposure finishes, the camera closes [...]
Bit depth quantifies how many unique colors are available in an image’s color palette in terms of the number of 0′s and 1′s, or “bits,” which are used to specify each color. This does not mean that the image necessarily uses all of these colors, but that it can instead specify colors with that level [...]
Not only are the cost of digital cameras going down, but processing the pictures seems to be more in demand at photo developing centers than for traditional film cameras. The odds are, sooner or later, you’ll find yourself one day with a digital camera in your hands and the expectation to take a few good [...]
If you want to learn how to do anything better, all you have to do is consult a popular magazine for a wide selection of tips and advice. Whether your hobby is music, soccer or digital photography, there are plenty of magazines that can help you to perfect your craft. However, often times this is [...]
Camera lens filters still have many uses in digital photography, and should be an important part of any photographer’s camera bag. These can include polarizing filters to reduce glare and improve saturation, or simple UV/haze filters to provide extra protection for the front of your lens. This article aims to familiarize one with these and [...]
Sometimes when you’re learning a new skill like digital photography, you have a ton of questions that the instruction manual just can’t answer. You could invest in a digital photography book, but even that might not be enough. Getting advice, hints, suggestions and interaction with others who share your fascinations and frustrations make joining and [...]
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