Digital Photography

A 35mm Full Frame sensor is physically larger than APS-C, Micro 4/3, and 1-inch sensors, allowing for better light gathering and depth of field control.

A photon is the fundamental particle of light. It is a quantum of electromagnetic radiation.

Camera shake is caused by movement during a long exposure. Using a tripod stabilizes the camera, and a faster shutter speed reduces the duration of the exposure, minimizing the impact of any residual movement.

The rule of odds suggests that an odd number of subjects is more visually appealing. If not followed, the composition may feel balanced in a way that causes the viewer's eye to wander or get stuck in the empty space between pairs.

Color temperature is measured in Kelvin. Lower Kelvin values represent warmer (red/orange) light, while higher values represent cooler (blue) light.

Color temperature is measured on the Kelvin scale. This scale describes the color appearance of light emitted by an object.

ISO measures the sensor's sensitivity to light. Lower ISO values (like 200) result in less digital noise or grain compared to higher ISO values.

JPEG is a compressed file format. The primary benefit is that it uses lossy compression to create smaller file sizes compared to uncompressed or lossless RAW files.

In Adobe Photoshop, the shortcut key for the Crop tool is C.

A fast shutter speed (like 1/4000) exposes the sensor for a very short duration, which effectively freezes fast-moving subjects.

A slow shutter speed (like 1/4) keeps the sensor exposed for a longer time, causing moving subjects to blur across the frame.

Landscape photography typically requires a deep depth of field to keep both foreground and background in focus. f8 to f11 are standard apertures to achieve this sharpness.

In Photoshop, Command+T (Mac) or Control+T (Windows) activates the Free Transform tool, which allows you to resize, rotate, or distort an image.

RAW files contain unprocessed data directly from the camera sensor, allowing for significant flexibility during post-processing compared to processed JPEG files.

The flash sync speed is the fastest shutter speed at which the camera can fully expose the sensor while the flash is firing. For most cameras, this is around 1/200 or 1/250.

Simplicity in composition involves removing unnecessary elements to focus the viewer's attention on the subject.

The golden ratio is a mathematical ratio approximately equal to 1:1.618, often used in art and design to create aesthetically pleasing compositions.

Shutter speed is the length of time the camera's shutter remains open to allow light to reach the image sensor.

Pattern in composition uses repeating elements to create visual interest and guide the viewer's eye through the image.

Most cameras include a grid overlay option in the menu to help the photographer align subjects according to the rule of thirds.

Framing, or 'frame in frame', uses elements in the scene to create a border around the subject, drawing the viewer's eye inward.

Looking space (or lead room) is the empty space left in front of a subject's gaze or movement to create a sense of direction and balance.

Cropping at joints (like knees, elbows, or wrists) is generally avoided in portrait photography because it can make the subject look amputated or unnatural.

dSLR stands for digital single lens reflex, referring to the mirror mechanism used to direct light to the viewfinder.

Leading lines are compositional elements that guide the viewer's eye toward the main subject. Other options like focus or interrupted patterns describe different photographic concepts.

Depth of field refers to the range of distance within a photo that appears acceptably sharp. It is controlled by aperture, focal length, and distance to the subject.

A hot shoe is a metal bracket on top of a camera that provides an electrical connection to trigger an external flash. It is a standard feature on most interchangeable lens cameras.

Composition is the arrangement of visual elements in a frame to create a pleasing or effective image. It involves rules like the rule of thirds, balance, and framing.

Bokeh is a Japanese term referring to the aesthetic quality of the blur produced in the out-of-focus parts of an image. It is often associated with the shape of highlights.

A pixel (picture element) is the smallest addressable element in a digital image. While photosites are the physical sensors, the pixel is the standard unit of the final image.

The aperture is the opening in the lens that controls how much light reaches the sensor. It is measured in f-stops, where smaller numbers represent larger openings.

Av stands for Aperture Value (or Aperture Priority). In this mode, the user selects the aperture, and the camera automatically calculates the shutter speed.

A smaller f-number (like f1.2) corresponds to a wider aperture, which results in a shallower depth of field. Larger f-numbers (like f11) result in a deeper depth of field.