spcarp03-lighting-discipline

Q1 multiple-choice · why-own-discipline

Carpet capture has its own lighting discipline beyond standard product photography because:

A) Carpets are too large for standard fixtures
B) Carpet customers always demand strict colour fidelity
C) Carpets sell on texture (pile, weave, fibre character) as primary value; carpets are large flat surfaces; carpet captures feed Visualizer compositing — all three drive different lighting decisions than typical product photography
D) Carpet Studio’s electrical specs require different fixtures

Q2 multiple-choice · continuous-vs-strobe-default

The default lighting type choice for Carpet Studio sessions is:

A) Continuous LED panels
B) Strobes
C) Tungsten Fresnel fixtures
D) Natural daylight from window

Q3 multiple-choice · canonical-structure

The canonical Carpet Studio lighting structure has three elements. Which are they?

A) Top light + side light + back light
B) Cyclorama wash + soft fill from above + raking light from one side
C) Key light + fill light + back light (classic three-point)
D) Single overhead strobe + reflector

Q4 multiple-choice · raking-angle

The typical raking light angle for Carpet Studio’s side cameras (1-4) is:

A) 45-60° from surface
B) 60-80° from surface
C) 15-20° from surface (low angle)
D) 90° from surface (directly above)

Explanation: Raking light = low angle. 15-20° typical for side cameras; steeper for high-pile, shallower for low-pile detail. The shadow length (texture revelation) is elevation / tan(angle) — lower angle = longer shadows.

Q5 multiple-choice · raking-vs-pile-direction

For a carpet with strong directional pile, raking light should be positioned:

A) Parallel to pile direction (light follows pile)
B) Perpendicular to pile direction (light crosses pile) for maximum shadow contrast and pile direction reading
C) At 90° below the platform
D) Behind the camera (camera direction)

Q6 multiple-choice · fibre-synthetic

When capturing a synthetic (polyester / nylon) carpet using your default wool-tuned lighting, you notice plasticky-looking captures with hot spots. First adjustment:

A) Increase strobe power for more uniform illumination
B) Switch to continuous lighting
C) Reduce strobe power 30-50%; add diffusion to fixtures; consider polariser filter on cameras; reposition raking light to less direct angle
D) Replace the synthetic samples with wool equivalents

Q7 multiple-choice · silk-treatment

Premium silk Persian rug capture requires:

A) Maximum strobe power for crisp detail
B) Hard directional lighting to reveal pattern detail
C) Soft diffused lighting (silk’s specular character requires careful management); often multi-pass with different raking positions to capture silk’s full lustre; strict colour discipline
D) Continuous fluorescent panels only

Q8 multiple-choice · colour-critical-protocol

For an automotive textile QC session with strict colour fidelity (Pantone match ΔE ≤2), the protocol includes:

A) Casual WB calibration once per day
B) Auto white balance (AWB) on all cameras
C) Pre-warm fixtures 15-30 min; eliminate ambient; custom WB per camera against ColorChecker; capture full reference set per camera; re-capture references every 30-60 min; session log; reference frames travel with captures to post
D) Skip reference frames to save session time

Q9 multiple-choice · multi-pass-inspection

A three-pass inspection-grade capture session typically includes:

A) Three identical 360° rotations as redundancy
B) Pass 1 flat lighting + Pass 2 raking from side A + Pass 3 raking from side B (different lighting variants per pass)
C) Three different camera angles on the same fixed lighting
D) Three sequential operators capturing the same sample

Q10 multiple-choice · cyclorama-brightness

If the white cyclorama appears brighter than the carpet in captures (cyclorama dominates, carpet looks dim), the correct response is:

A) Replace the white cyclorama with a black one
B) Increase carpet lighting only — leave cyclorama unchanged
C) Reduce cyclorama lighting (cyclorama lighting should be subordinate to carpet lighting) — or alternatively increase carpet lighting; verify balance via live preview
D) Re-position the cameras

Q11 multiple-choice · lighting-kit-minimum

The minimum viable Carpet Studio lighting kit includes (at minimum):

A) 2× medium-power studio strobes + 1× large softbox + 1× medium softbox or scrim + 1× directional strobe for raking + power packs + sync + ColorChecker + polarising filters
B) A single high-power strobe + reflector
C) 7 strobes (one per camera) + 7 modifiers
D) Continuous LED panels only — no strobes

Q12 multiple-choice · lighting-reference-library

SPCARP03 references the Lighting Techniques reference library. The library contains:

A) Hardware buying guides for specific strobe brands
B) Customer testimonials from carpet studios
C) Five reference manuals: Continuous vs Strobe Lighting, Raking Light Technique, Three-Point Setup Foundations, Colour Temperature Management, Fibre-Specific Lighting Considerations
D) Step-by-step camera assembly instructions

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