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Photography

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@ivangdavila

npx machina-cli add skill @ivangdavila/photography --openclaw
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Exposure Triangle

  • ISO: double ISO = double brightness, but also double noise. Stay lowest possible
  • Aperture: f/2.8 = shallow depth of field (blurry background), f/11 = everything sharp
  • Shutter: 1/focal length minimum for handheld — 50mm lens needs 1/50s or faster
  • Expose for highlights — blown highlights unrecoverable, shadows can be lifted in post

Focus Fundamentals

  • Focus on eyes for portraits — always the nearest eye
  • Back-button focus separates focus from shutter — press once to lock, recompose freely
  • Single-point AF for precision, tracking AF for movement
  • Hyperfocal distance for landscapes: focus 1/3 into scene, everything sharp at f/8-11
  • When in doubt, stop down — f/8 is sharper than wide open for most lenses

Composition Beyond Rule of Thirds

  • Leading lines pull eyes into frame — roads, fences, rivers toward subject
  • Frame within frame: doorways, windows, arches add depth
  • Negative space: empty area emphasizes subject — don't fill every corner
  • Odd numbers: 3 or 5 subjects more pleasing than 2 or 4
  • Break rules intentionally: centered subject with symmetry works

Natural Light

  • Golden hour: 1 hour after sunrise, 1 hour before sunset — warm, soft, directional
  • Blue hour: 20-30 minutes after sunset — even, moody, no harsh shadows
  • Overcast is giant softbox — ideal for portraits, no squinting
  • Midday sun: use as backlight or find open shade — avoid direct overhead
  • Window light: subject facing window, not camera — soft directional light

Flash Basics

  • Bounce off ceiling/wall — direct flash is harsh and flat
  • Flash exposure compensation: start at -1 to -2 stops — blend with ambient
  • High-speed sync for daylight fill — allows wide aperture outdoors
  • Off-camera flash: 45 degrees from subject, elevated — creates dimension
  • Catch light in eyes: small light source close beats large source far

Common Mistakes

  • Horizon not level — first thing viewers notice is wrong
  • Cutting at joints: ankles, wrists, knees — crop mid-limb or full body
  • Busy backgrounds: poles from heads, distracting elements
  • Chimping constantly — looking at screen after every shot instead of moments
  • Not checking histogram — LCD brightness deceives, histogram doesn't lie

Camera Settings by Genre

Portraits:

  • Aperture priority, f/1.8-2.8
  • Single-point AF on eye
  • +1/3 exposure for skin brightness

Landscapes:

  • Aperture priority, f/8-11
  • Tripod, mirror lock, remote/timer
  • Bracket exposures for HDR

Sports/Action:

  • Shutter priority, 1/500s minimum
  • Continuous AF tracking
  • Burst mode, anticipate peak action

Street:

  • Aperture priority, f/5.6-8
  • Zone focus preset at 3m
  • Shoot from hip if needed

RAW vs JPEG

  • Shoot RAW for editing flexibility — recovers 2-3 stops of exposure
  • JPEG for volume without editing — events with hundreds of shots
  • RAW + JPEG: preview immediately, edit RAW later
  • RAW files need processing — they look flat by design, not a problem

Editing Workflow

  1. Cull ruthlessly: delete obvious failures first
  2. Global adjustments: exposure, white balance, contrast
  3. Local adjustments: dodge/burn, graduated filters
  4. Color grading: consistent look across set
  5. Export: sRGB for web, AdobeRGB for print
  • Edit on calibrated monitor — laptop screens lie about color
  • Sharpening last, after resize — oversharpening destroys detail
  • Less is more: if you notice the edit, you went too far

Gear Reality

  • Best camera is the one you have — phone beats DSLR at home
  • Lenses matter more than bodies — invest in glass first
  • 50mm f/1.8 is best first prime — cheap, sharp, teaches composition
  • Tripod: don't cheap out — flimsy tripod is worse than none
  • One good light > three bad ones — start with single source

File Management

  • Backup same day: 3-2-1 rule (3 copies, 2 media types, 1 offsite)
  • Folder structure: YYYY/YYYY-MM-DD_EventName
  • Rename files: YYYYMMDD_ProjectName_0001.ext
  • Keywords and ratings during import — not later when you forget context
  • Archive RAW files forever, even rejected ones — storage is cheap, moments aren't

Source

git clone https://clawhub.ai/ivangdavila/photographyView on GitHub

Overview

This skill covers exposure, focus, composition, lighting, and editing workflows across genres. It teaches how to balance ISO, aperture, and shutter, compose with leading lines and negative space, and edit RAW files for a cohesive look from capture to export.

How This Skill Works

Technically, it guides you through capturing with the exposure triangle, choosing focus methods, and applying composition rules. It then outlines an editing workflow from ruthless culling to global and local adjustments, color grading, and final export, with RAW processing emphasized.

When to Use It

  • Planning portraits to nail skin tones and eye sharpness
  • Capturing fast action in sports or events with reliable AF
  • Shooting landscapes with sharp depth and controlled exposure
  • Documenting street scenes with candid moments and composition rules
  • Editing workflow: choosing RAW vs JPEG and exporting for web or print

Quick Start

  1. Step 1: Assess the scene and set the exposure triangle (ISO, aperture, shutter) for the desired look
  2. Step 2: Choose a focus method (back-button focus with single-point AF on the eye, or zone focus for street) and compose using leading lines or frames within frames
  3. Step 3: Cull ruthlessly, apply global adjustments, then local edits and color grading; export in sRGB for web or AdobeRGB for print

Best Practices

  • Keep ISO as low as practical to reduce noise
  • Use the right aperture for the desired depth of field and sharpness (e.g., f/2.8 for portraits, f/8–f/11 for landscapes)
  • Back-button focus and single-point AF for precise eye focus
  • Shoot RAW for editing flexibility; supplement with JPEG when needed
  • Review histogram and edit on a calibrated monitor; avoid oversharpening

Example Use Cases

  • Portrait session using f/2.0, eye-focused single-point AF, and -1/3 exposure
  • Landscape shot with hyperfocal distance at f/11 using a tripod and remote timer
  • Sports action frame captured at 1/500s with continuous AF tracking and burst mode
  • Street photo with zone focus at ~3m and candid framing from the hip
  • Event shoot using RAW+JPEG workflow with color grading for consistency

Frequently Asked Questions

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