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Technical Photography Nomenclature & Modes - Coggle Diagram
Technical Photography Nomenclature & Modes
Core Hardware & Light Mechanics
Sensor:
The light-sensitive electronic silicon surface that captures the exposure (the modern equivalent of film).
Focal Length (mm):
Dictates magnification and field of view (wide-angle vs. tight telephoto lens).
Stop:
An incremental unit of light measurement. Adjusting an exposure by "+1 stop" exactly doubles the light hitting the sensor; "-1 stop" cuts it in half.
Dynamic Range:
The ceiling/floor capability of a sensor to map clean details inside both deep shadows and searing highlights simultaneously.
Metering:
The camera built-in light analysis engine used to calculate optimal exposure values.
Exposure Compensation:
Manual override tool to force the automatic meter to make an image brighter or darker (critical for high-contrast traps like bright snow or backlighting).
Image Processing & Quality Parameters
White Balance:
Calibrating sensor response to neutral whites based on the lighting color temperature (balancing amber candlelight vs. icy midday sun).
RAW Files:
Unprocessed, uncompressed data matrices directly from the sensor. Maximum data retention for color grading and shadow rescue, but yields massive file sizes.
JPEG Files:
Compressed, finalized images baked in-camera. Fast sharing convenience at the cost of losing massive chunks of shadow and highlight data for post-processing.
Histogram:
A real-time graphic chart tracking pixel tonal distribution. Pure black maps on the far left; pure white maps on the far right. Helps guard against clipping.
Chromatic Aberration:
An optical lens defect causing color fringing (typically green or magenta outlines) along high-contrast borders.
Aspect Ratio:
Proportional dimensions of image width to height (e.g., classic photo 4:3, wide cinematic 16:9).
Camera Mode Control Division
Manual Mode (M):
User holds 100% control over Aperture, Shutter, and ISO. Zero camera automation. Best for precision control.
Aperture Priority (Av / A):
User commands Aperture and ISO; camera automatically pairs the correct Shutter Speed. Best for portraits and fast depth-of-field control.
Shutter Priority (Tv / S):
User commands Shutter Speed and ISO; camera handles the matching Aperture size automatically. Best for capturing fast movement or action sports.
Auto Mode:
Camera completely dictates every parameter. Strips away artistic intent.