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Files, Metadata & Workflow

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Files, Metadata & Workflow

3-2-1 Backup Rule

The guideline of keeping three copies of data, on two different media types, with one copy off-site.

3 copies, 2 media, 1 off-site count
Files, Metadata & Workflow

Archive

Long-term storage of completed work in a form intended to remain readable for decades.

TB
Files, Metadata & Workflow

AVIF

An image format based on the AV1 video codec, offering high compression efficiency, wide gamut and high dynamic range support.

MB
Files, Metadata & Workflow

Backup

A separate copy of image files kept so that loss of the original does not lose the work.

count
Files, Metadata & Workflow

Batch Rename

Renaming many files at once using a template built from metadata, sequence numbers and fixed text.

count
Files, Metadata & Workflow

Bit Rot

The gradual, silent corruption of stored data over time, in which individual bits change without any error being reported.

Files, Metadata & Workflow

Bits per Channel

The number of bits used to record each colour channel of a pixel, determining how many tonal levels are available.

Levels = 2^bits bits
Files, Metadata & Workflow

Caption Field

The IPTC field carrying a written description of what the image shows.

characters
Files, Metadata & Workflow

Card Formatting

Erasing a memory card in the camera to restore a clean file structure before reuse.

Files, Metadata & Workflow

Catalogue

A database recording every image in a collection along with its metadata, previews and editing instructions.

count
Files, Metadata & Workflow

Catalogue Backup

A copy of the catalogue database, holding every rating, keyword, collection and editing decision.

MB
Files, Metadata & Workflow

Checksum Verification

Computing a mathematical fingerprint of a file and comparing it later to confirm the data has not changed.

hash
Files, Metadata & Workflow

Chroma Subsampling

A compression technique that records colour information at lower resolution than brightness information.

4:4:4, 4:2:2, 4:2:0 ratio
Files, Metadata & Workflow

Cloud Backup

Storing a copy of image files on remote servers accessed over the internet.

TB
Files, Metadata & Workflow

Collection

A named grouping of images assembled for a purpose, independent of where the files are stored.

count
Files, Metadata & Workflow

Colour Label

A coloured tag applied to a file to indicate its status in a workflow, independently of its quality rating.

Files, Metadata & Workflow

Compression Artefact

Visible distortion introduced by lossy compression, such as blocking, ringing or colour smearing.

Files, Metadata & Workflow

Copyright Metadata

The metadata fields asserting authorship, copyright status and usage terms for an image.

Files, Metadata & Workflow

Culling

The process of reviewing a shoot and selecting which frames are worth keeping and editing.

%
Files, Metadata & Workflow

Digital Asset Management

The systematic organisation, description, storage and retrieval of a body of image files.

Files, Metadata & Workflow

DNG

An openly documented raw container designed as a universal, archival alternative to proprietary camera formats.

MB
Files, Metadata & Workflow

Embedded Colour Profile

An ICC profile stored inside an image file, telling any application what its colour numbers mean.

KB
Files, Metadata & Workflow

Embedded Preview

A JPEG rendering stored inside a raw file, used for camera playback and fast browsing before conversion.

px
Files, Metadata & Workflow

EXIF

The standard block of technical metadata a camera writes into a file, recording settings and equipment.