Basic Digital Camera Concepts How a digital camera works.

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Basic Digital Camera Concepts How a digital camera works

Transcript of Basic Digital Camera Concepts How a digital camera works.

Page 1: Basic Digital Camera Concepts How a digital camera works.

Basic Digital Camera Concepts

How a digital camera works

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The Sensor

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Additive Primary RGBSecondary Primary CYM

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RGB Channels

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The Sensor

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The Bayer PatternColor Filter

BGBGBGBGBGBGBGBGBGBGBGBBGBGBG GRGRGRGRGRGRGRGRGRGRGRGRGRGRG

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Interpolation

The process of interpolating is called “demosaicing”

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Note: Dirty Sensor

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NOTE: B&W vs. GRAYSCALE

Technically, in digital photography we make grayscale images, AKA Black & White conversions, using the color channels during the conversion.

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Color SpaceVarious Mathematical models to represent color as it applies to JPEG camera settings

sRGBWeb

Adobe RGBPrints

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Color GamutColor gamut choices are important when printing from JPEG files.

For better prints, set your camera to Adobe RGB (wire frame) for printing from JPEGs. A RAW file does not require a choice of color gamut. (sRGB (solid) is smaller and standard for web.)

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JPEG & RAW

Camera processed JPEG

UnprocessedRAW

Applies sRGB Or Adobe RGB

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JPEG & RAWJPEG

No correctionsJPEGAuto

corrections

RAW unprocessed

RAW auto

processed

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RAW File as shot RAW File processed RAW File B&W Conversion

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RAW FILES

• Are not compressed• Are larger & take up more memory • Are processed and converted by you (not your camera)• Are proprietary (not universal like JPEGs) i.e. NEF & CR2• Are at least 8-bits in color• Are NOT restricted by sRGB or Adobe RGB color spaces• Have more latitude for adjustments in the highlight and

shadows• (Are sometimes admissible in a court of law, forensics)• Are what you will be shooting with after the first assignment