Cameras, Photography and Video Equipment, Photofinishing Industry Terminology

APS-C

A sensor format smaller than 35 mm full-frame, typically with a 1.5x (Nikon/Sony) or 1.6x (Canon) crop factor. It affects field of view, depth of field, noise, and lens choices.

We shot on an APS-C body, so a 35 mm lens gave a field of view similar to ~52 mm on full-frame; APS-C bodies are popular for their balance of cost, reach, and size; Be mindful of crop factor when choosing wide-angle lenses for APS-C.


Archival permanence

The longevity of prints or media under various storage and display conditions, influenced by ink/chemical process, paper, environmental factors, and handling. Measured by standards and tests (e.g., Wilhelm, ISO) to predict fade and durability.

This pigment ink on cotton rag paper is rated for 100+ years of display life; Avoid OBA-heavy papers if you need archival permanence; The lab provides ISO test data for print permanence.


Autofocus (AF)

A system that automatically adjusts the lens to achieve sharp focus. Methods include contrast-detect, phase-detect, and hybrid; modes typically include single (AF-S), continuous (AF-C), and tracking/eye AF.

Use AF-C with eye detection for moving portraits; Switch to AF-S and single point for precise product shots; This camera’s phase-detect AF performs well in low light.


Average Selling Price (ASP)

A pricing metric representing the average price realized per unit sold over a period. Used to track product mix, pricing power, promotions, and channel strategy effectiveness.

Our camera ASP rose after we shifted mix toward higher-end bodies; Bundling lenses increased ASP by 12%; ASP dropped when retailers discounted during MAP holidays.


Bayer filter

A color filter array (CFA) pattern on most image sensors (RGGB) that enables color capture by sampling red, green, and blue at different pixels. Requires demosaicing to reconstruct full-color images.

The sensor’s Bayer CFA requires demosaicing to create a full-color image; X-Trans is an alternative to the standard Bayer pattern; Strong moiré can be a byproduct of Bayer sampling with certain subjects.


Bit depth

The number of bits used to represent color intensity per channel. Higher bit depth increases tonal gradation and reduces banding, important for heavy editing and color grading.

Shoot 10-bit 4:2:2 log for smoother gradients in grading; 16-bit TIFFs help avoid banding in sky gradients; RAW at 14-bit captures more tonal detail than 12-bit.


Bitrate

The amount of data recorded per second of video, typically in Mbps. Higher bitrates preserve more detail and motion fidelity but require more storage and faster media.

This 4K 10-bit 4:2:2 codec records at 400 Mbps; Use a higher bitrate for fast motion to avoid macroblocking; Streaming platforms often limit bitrate to manage bandwidth.


C-41

The standard chemical process for developing color negative photographic film. Common in minilabs and pro labs, producing negatives suitable for optical or digital printing.

Our lab still processes C-41 color negative film; Cross-processing C-41 in E-6 yields creative color shifts; Ensure fresh chemistry for consistent C-41 results.


Chroma subsampling (4:4:4 / 4:2:2 / 4:2:0)

A method of reducing color resolution relative to luma to save bandwidth. Expressed as ratios (e.g., 4:2:2) indicating how chroma samples are shared across pixels, impacting color fidelity in post.

Choose 4:2:2 for stronger color information in grading; 4:2:0 is fine for web delivery but not ideal for keying; External recorders can enable 4:2:2 capture on some cameras.


CMOS sensor

Complementary Metal-Oxide-Semiconductor image sensors dominate digital cameras due to low power and fast readout. Variants include BSI (back-side illuminated) and stacked architectures.

Stacked CMOS sensors allow faster readout and less rolling shutter; BSI CMOS improves low-light performance; Most modern cameras use CMOS rather than CCD.


Codec

A method of encoding and compressing video or audio data (e.g., H.264, H.265/HEVC, ProRes). Codecs balance quality, editability, and file size; can be intra-frame or inter-frame (GOP-based).

We recorded H.265 internally but used ProRes HQ on the external recorder; Long-GOP codecs are efficient but harder to edit than All‑Intra; Check NLE support for the codec before the shoot.


Color space

A defined range of reproducible colors with associated primaries and transfer characteristics (e.g., sRGB, Adobe RGB, ProPhoto RGB, Rec.709, Rec.2020). Critical for consistent capture, editing, and output.

Edit stills in Adobe RGB or ProPhoto RGB for wide gamut; Deliver SDR video in Rec.709; Soft-proof to the lab’s ICC profile to handle smaller paper color spaces.


Crop factor

A ratio comparing a camera’s sensor size to full-frame (35 mm). It shifts the effective field of view and influences lens selection and perceived depth of field.

On APS-C with 1.5x crop, a 50 mm frames like 75 mm on full-frame; Crop factor also affects apparent depth of field; Choose focal lengths considering the sensor’s crop factor.


DPI/PPI

PPI (pixels per inch) defines image resolution for display/print scaling; DPI (dots per inch) refers to printer dot density. In print workflows, PPI is used to size images; DPI describes device capability.

Set PPI to 300 for 8x10 inch prints at high quality; Printers may use thousands of DPI dots to render 300 PPI image data; Don’t confuse PPI (image) with DPI (printer hardware).


Dynamic range

The ratio between the darkest and brightest details a camera or medium can capture, often expressed in stops. Higher dynamic range allows more flexibility in exposure and grading.

This sensor offers ~14 stops of dynamic range at base ISO; Shoot log to preserve dynamic range for HDR grading; Watch the histogram to avoid clipping highlights.


Dye-sublimation printing

A thermal process that diffuses dye into a receiver paper, producing durable, instant-dry photo prints. Popular in minilabs, kiosks, and event printing for speed and robustness.

Dye-sub kiosks deliver dry-to-touch prints in seconds; Dye-sub has excellent durability for photo booths; Gamut is smaller than high-end pigment inkjet but speedy and robust.


Focal length

A lens specification in millimeters that determines angle of view and magnification. Combined with sensor size, it defines composition and perspective relationships.

Use 24 mm for wide interiors and 85 mm for portraits; On APS-C, 24 mm behaves like ~36 mm; Zooms cover multiple focal lengths, primes are fixed.


Frame rate

The number of frames captured per second (fps). Common rates include 23.976/24, 25, 30, 50, 60, and higher for slow motion.

Shoot 24p for a cinematic feel and 60p for smooth motion; Overcrank at 120 fps for slow motion playback at 24 fps; Match frame rate to mains frequency to avoid flicker.


Full-frame

A sensor size equivalent to 35 mm film (36x24 mm). Offers wider field of view for a given focal length and often better high-ISO performance.

Full-frame sensors excel in low light and shallow depth of field; A 35 mm on full-frame is a classic environmental portrait lens; Many cine lenses are designed to cover full-frame now.


Gamut (Color gamut)

The subset of colors a device or medium can reproduce. Differences between camera, monitor, and printer gamuts must be managed to ensure accurate color.

The lab’s paper profile has a smaller gamut than your monitor; Use soft proof to handle out-of-gamut colors; P3 displays show a wider gamut than sRGB.


Global shutter

A sensor readout method where all pixels are exposed and read simultaneously, preventing rolling-shutter artifacts like skew, wobble, and partial exposures.

Global shutter eliminates skew in fast pans; It avoids flash banding issues; Some new sensors trade a bit of dynamic range for global shutter performance.


H.265/HEVC

A modern video compression standard offering better efficiency than H.264 at similar quality. Widely used for 4K delivery and streaming but more computationally intensive.

We delivered 4K masters in HEVC to reduce file size; Hardware decoding is essential for smooth HEVC playback; Check licensing and NLE support before committing to HEVC.


HDR (High Dynamic Range)

Techniques and formats that preserve and display a wider brightness range than SDR. In video, typically uses PQ or HLG transfer functions; in stills, involves bracketed exposures and tone mapping.

Capture log and grade to HDR10 for HDR displays; HDR stills can be tone-mapped for SDR output; Ensure monitoring supports HLG or PQ when grading HDR.


Histogram

A graph showing the distribution of tonal values in an image or video frame. Helps evaluate exposure, contrast, and clipping quickly.

Use the histogram to ensure highlights aren’t clipping; Log profiles may show a left-shifted histogram; Enable RGB histograms to watch channel clipping.


IBIS (In-Body Image Stabilization)

A stabilization system that moves the image sensor to counteract camera shake. Useful for handheld stills and video, especially in low light.

IBIS gives 5–8 stops of stabilization for handheld shooting; Pair IBIS with OIS for dual stabilization; IBIS helps stabilize adapted manual lenses too.


ICC profile

A standardized file describing a device’s color characteristics, enabling color-managed workflows. Profiles exist for cameras, displays, printers, and papers.

Convert to the lab’s ICC printer profile before sending; Calibrate your monitor and use its ICC profile; Assign vs convert profiles appropriately in your editor.


Inkjet (Pigment vs Dye)

Two main ink types for photo inkjet: pigment (better permanence, wider media compatibility) and dye (often higher gloss and saturation but less archival). Choice affects gamut, longevity, and handling.

Pigment inks offer better fade resistance for archival fine art; Dye inks often have higher gloss and saturation but lower permanence; Choose paper and ink combinations by ICC profile.


ISO (Sensitivity)

A measure of a camera sensor’s sensitivity setting. Raising ISO allows shooting in lower light or with faster shutter speeds at the cost of increased noise and sometimes reduced dynamic range.

Stay at base ISO for maximum dynamic range; Dual native ISO cameras maintain cleaner images at specific ISO steps; Higher ISO increases noise but enables faster shutter speeds.


JPEG

A widely used lossy still-image format with 8-bit depth and compression that can introduce artifacts. Efficient for sharing and web, less ideal for heavy edits and archiving.

JPEG is convenient for fast delivery but limited to 8-bit; Avoid excessive recompression to minimize artifacts; Use JPEG for proofs, keep RAW or TIFF for finals.


Log gamma (S-Log/C-Log/V-Log)

Camera-specific logarithmic gamma curves that compress highlight information to preserve dynamic range for grading. Requires LUTs or color transforms to view and deliver correctly.

Shoot S-Log3 and apply a Rec.709 LUT for monitoring; Log requires careful exposure to avoid noisy shadows; Deliverables may be SDR Rec.709 even if captured in log.


LUT (Look-Up Table)

A mapping function (1D or 3D) used to transform color and tone from one space or look to another. Common in on-set monitoring and post-production color workflows.

Load a 3D LUT on the monitor to preview the final grade; Use a technical LUT to convert log to Rec.709; Creative LUTs can establish a look but fine-tune in grading.


MAP (Minimum Advertised Price)

A policy set by manufacturers restricting the lowest price retailers can publicly advertise. Used to protect brand value and channel margins, though actual selling price may differ.

Dealers must comply with MAP or risk losing co-op funds; We scheduled a MAP holiday for Black Friday; MAP stabilizes pricing across channels.


MTF (Modulation Transfer Function)

A measure of how well a lens reproduces contrast at various spatial frequencies. Represented in charts to assess sharpness and contrast across the frame.

The MTF chart shows contrast at 10 and 30 lp/mm; Higher MTF at the edges indicates strong corner sharpness; Compare MTF curves when evaluating lenses.


ND filter

Neutral density filters reduce light entering the lens without changing color balance. Enables wider apertures or slower shutter speeds in bright conditions.

Use a 6‑stop ND to shoot wide open in bright sun; Variable ND is convenient but can cause X-patterns at extremes; For video, ND helps maintain a 180-degree shutter angle.


OIS (Optical Image Stabilization)

Lens-based stabilization that moves optical elements to counteract camera shake. Complements IBIS and is effective for stills and video.

The 24–105 mm lens has OIS for steadier handheld footage; OIS + IBIS can yield better stabilization; Turn off OIS on a tripod to avoid drift.


RA-4

A chromogenic printing process for color photographic paper (silver-halide) used in wet labs and minilabs. Produces traditional photo prints from digital or optical sources.

We print RA-4 on Fuji silver-halide paper; Dry labs can’t match the RA-4 look on some images; RA-4 requires proper chemical control for consistency.


RAW (Camera Raw)

A minimally processed sensor data file retaining maximum detail and dynamic range. Requires demosaicing and color rendering in software; offers the most flexibility for editing.

Shoot RAW to adjust white balance and exposure in post; 14-bit RAW preserves more detail than 12-bit; Convert proprietary RAW to DNG for archiving if desired.


Rec.709

The standard color space and gamma system for HD SDR video. Defines primaries, transfer function, and white point, forming the basis of most SDR deliverables.

Deliver SDR masters in Rec.709 for broadcast and web; Apply a log-to-Rec.709 transform for monitoring; Calibrate monitors to Rec.709 when grading SDR.


RIP (Raster Image Processor)

Software or hardware that converts images into device-specific raster data for printers, applying color management, screening/halftoning, and layout/queuing functions.

The RIP handles color management and halftoning for the lab’s printer; We queue print jobs through the RIP with the correct ICC profile; Upgrading the RIP improved throughput.


Rolling shutter

A sensor readout method where rows are exposed sequentially. Can cause skew, wobble, and flash banding in fast motion or with flickering light sources.

Fast pans caused skew due to rolling shutter readout; LED panels produced partial-exposure banding; Global shutter or faster readout mitigates these artifacts.


SKU (Stock Keeping Unit)

An identifier for a distinct product variant used in inventory, merchandising, and sales tracking. Enables accurate stock management and analytics.

Create unique SKUs for each lens mount variant; Bundles need distinct SKUs for inventory tracking; Retailers rely on SKUs for sell-through reporting.


SMPTE timecode

A standardized time address format (e.g., 01:23:45:12) used to synchronize and reference video and audio. Variants include drop-frame and non-drop-frame.

Jam-sync timecode across camera and audio recorder; Use drop-frame 29.97 for broadcast workflows; Free-run timecode simplifies multicam sync.


Soft proofing

On-screen simulation of a print using the destination ICC profile and rendering intent. Helps anticipate gamut and tone changes prior to printing.

Soft-proof with the lab’s ICC to preview gamut clipping; Choose perceptual rendering intent for saturated colors; Adjust out-of-gamut hues before sending to print.


Tethered shooting

Connecting the camera to a computer or tablet for live view, instant transfer, and control during capture. Common in studio, product, and high-volume workflows.

Tether to Capture One for live client review; Use a TetherBoost cable for reliability; Studio workflows often rely on tethered capture for instant checks.


TIFF

A flexible, often lossless image format supporting high bit depths, multiple color spaces, and optional compression. Preferred for high-quality editing and printing.

Export 16-bit TIFFs for retouching and print; Use LZW or ZIP compression to reduce file size losslessly; TIFF preserves layers and high bit depth better than JPEG.


Turnaround time (TAT)

The elapsed time from order intake to delivery. A key service-level and operational metric in labs and studios, affecting customer satisfaction and capacity planning.

Our photobook TAT is three business days; Offer expedited TAT during peak season for a surcharge; Track TAT by product to optimize staffing.


UHD/4K

Ultra High Definition typically refers to 3840x2160 resolution (consumer 4K). Distinct from DCI 4K (4096x2160) used in cinema; impacts capture, storage, and delivery.

We shot UHD 3840x2160 for a 4K delivery; Note the difference between UHD (16:9) and DCI 4K (4096x2160); Higher resolution increases storage and GPU requirements.


Waveform monitor

A video scope displaying signal levels (luma and/or RGB) over image width. Essential for accurate exposure, contrast, and color balance assessment on set and in grading.

Use the luma waveform to set exposure precisely; RGB parade helps balance white point; Waveforms are more reliable than histograms for log footage.


White Balance

Adjusts the camera’s color rendering to neutralize color casts from different light sources (temperature and tint). Critical for accurate skin tones and consistent color.

Set 5600K for daylight or custom WB with a gray card; Correct mixed lighting using manual white balance; RAW allows easy WB changes in post, unlike JPEG.


Zebra pattern

An exposure aid that overlays diagonal stripes on areas exceeding a user-defined brightness threshold. Helps protect highlights and target specific tonal ranges.

Set zebras to 70% IRE for skin tones; Use 95% zebras to protect highlights; Zebras guide exposure when shooting log without a monitor LUT.


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