Imaging Terminology Archives - Page 7 of 7

Tone

What Do We Mean by ‘Tone’ Hen Talking About Photographs and Photography? When talking about photography the term tone refers to the overall range of lightness and darkness, and color variation within an image. Also often referd to as ‘value’ the tone of an image can have a drastic effect on how an image ‘feels’; Images containing many dark tones often appear dramatic and sad while images featuring light tones appear happy and vibrant. juxtaposition between image subject and tone can be used to create jarring and powerful images. The difference between the lightest and darkest tones within an image …

Tran Reflective

What Does the Term Tran Reflective Mean When Talking About Cameras and Photography? When talking about cameras and photography the term ‘Tran Reflective’ refers to a type of LCD display which uses both ambient light and back lighting to illuminate it’s pixels. The use of a tran reflective LCD on a device allows for much easier viewing of information in high contrast situations, such as working in direct sunlight. Tran reflective screens can be found on many digital cameras and are popular because of the ease of reviewing images in bright conditions. Another form of LCD often found on cameras …

True Color

What Does True Color Mean When Talking About Image Editing and Photography? When talking about digital photography and image editing, the term ‘True Color’ refers to an image which is rendered in RGB color with a bit-depth of 24. 24-bit RGB allows for 256 values of each color channel, therefore creating the possibility for the rendering of a total of 16,777,216 tones. The human eye can only perceive roughly 10 million colours and so images rendered in True Color appear to be extremely realistic. Given the large amount of information contained within an image rendered in True Color related file sizes …

Underexposure

What Does Underexposure Mean When Talking About Photography? If too little light is recorded when capturing an image the image is said to be ‘underexposed’; The imaging medium i.e. film, or sensor has not been exposed to light for long enough to capture a sufficiently bright image. Underexposure of an entire image occurs when the combination of shutter speed, aperture and ISO chosen to capture an image have not been chosen correctly by the shooter, or metered correctly by the camera. Underexposure in dark areas of some scenes is unavoidable if the dynamic range being captured is too high, for …

Upload

What Does Upload Mean When Talking About Photography? When talking about photography the term upload means to transfer information from one device to another. Photographers often upload their images from camera to computer, and then subsequently upload the images from the computer to a hard drive for storage and backup purposes. Uploading of information can be achieved by various methods depending on the hardware capabilities of your equipment. Wired uploading can be achieved using your camera and computer’s USB interfaces. Alternatively, if your hardware has either Bluetooth or built-in Wi-Fi then information can be transferred wirelessly between compatible systems. Modern …

USB

What Does USB Stand for when Talking About Photography? USB stands for ‘Universal Serial Bus’ and is a form of data connection and transfer protocol. The data input/output port on most modern cameras is a type of USB port and USB ports can be found on nearly all modern computers. USB interfaces can be used to upload information, for example images and metadata, from a camera to a computer system. they can also be used to charge the batteries in some compatible devices rather from having to remove the battery and place it into a separate charging cable. There are …

UXGA

What Does UXGA Mean When Talking About Photography? UXGA means ‘Ultra Extended Graphics Array’ and refers to an image resolution size of 1600 x 1200 pixels which in photography terms equates to 1.92mp. UXGA video interfaces and compatible equipment first appeared around 2010 and the resolution is still widely used today in many office and home computer systems. Running higher resolution compatible equipment is relatively costly making UXGA a popular choice for many home editing setups. The advantage of higher resolution displays when viewing or editing images is the ability for the display to render higher levels of detail, or …

VGA

What Does VGA Mean When Talking About Photography? VGA or ‘Video Graphics Array’ refers to an image resolution size of 640 x 480 pixels (0.3MP) at an aspect ratio of 4:3. The use of VGA to describe a specific resolution began in the early 1990’s when VGA, or 640 x 480 resolution was the standard video resolution output of the graphics chips onboard many home PCs. VGA was superseded in around 1996 by SVGA, or ‘super video graphics array’ which features a resolution on 800 x 600. The VGA resolution is now extremely out of date, but serves as a …

White Balance

What Is White Balance and How Is It Used When Taking Photographs? When talking about cameras and photography ‘white balance’ refers to the adjustment made to an image to compensate for the color temperature of the light illuminating the scene being captured. All light sourced radiate light at different color temperatures, a camera must be instructed what this temperature is so that the final image contains colours that appear natural to the human eye. The purpose of white balancing is to render the white areas of an images lit by different light sources so that they appear to be truly …

XGA

What Does XGA Mean When Talking About Photography? XGA or ‘Extended Graphics Array’ refers to a video display mode with a resolution of 1024 x 768 in 256 colors. XGA superseded SVGA (800 x 600) in 2002 becoming the standard output resolution of most home computing graphics interfaces. As such many websites were subsequently optimised for the new standard. In photography terms XGA equates to 0.79MP, which doesn’t seem like much compared to todays technology, but during the mid 2000s it was considered to be a high resolution for a video monitoring device. If you were a pioneering digital photographer …