DEPTH OF FIELD
PRE-SHOOT TOOLKIT
Pre-Shoot Toolkit
Plan before you shoot: depth of field, ND long exposure, star shutter, sunrise/sunset and golden/blue hour, plus a rare bird habitat atlas. Everything is calculated locally in your browser — nothing is uploaded.
ND EXPOSURE
ND Filter Long Exposure
STAR SHUTTER
Star Shutter
SUN & TWILIGHT
Sunrise · Sunset · Golden & Blue Hour
Date
City preset
MAP & BEARINGS
Map · Sunrise, Sunset & Milky Way
Date
Time
City preset
The map prefers the AMap JS API (web key), falling back to Leaflet/OSM. Click the map or drag the pin to reposition. North is up; lines show bearings from true north. The Milky Way bearing uses the galactic center (Sgr A*); visibility also depends on light pollution, moon phase and weather.
Sunrise
Sunset
Galactic center
Camera
MOON PHASE
Moon Phase & Position
Date
Time
City preset
Moon phase, rise/set and position are approximate (SunCalc); terrain, altitude and atmosphere can affect actual visibility.
WEATHER & VISIBILITY
Weather & Visibility
City preset
Waiting for weather data…
Visibility data from Open-Meteo; when the Windy API is available, its connection status appears on the left. Visibility is a model forecast; haze, terrain and local weather can change the actual result.
FIRE CLOUD MAP
Fire Cloud Map
Date
Time
City preset
Probability estimated from Open-Meteo cloud cover, precipitation and humidity; click the map to move. Colors shift from blue-green to yellow-red-purple as probability rises.
Low 0%
High 100%
PHOTO FORMULAS
Photo Formula Cheat Sheet
These are starting points; adjust for metering, composition and intent. Sensor size, resolution and lens also change the result.
RARE BIRD ATLAS
Rare Bird Habitats
A region-by-region index of representative rare birds in China, with public habitats and high-probability photography areas. Only public reserves, national parks and mountain areas are listed; exact nest coordinates are withheld.
Markers show the approximate reserve, national park or mountain area; click a marker for species and season
“High probability” means a good chance in the right season, weather and access conditions, never a guarantee. Keep distance, avoid playback, baiting and disturbance near nests, and follow reserve rules; confirm access and current bird news with the reserve or a local birding group before travelling.
Maps load on demand: about 2–4 MB without them, 20–50 MB with a map, and more when several maps are open.