This commit introduces third-party work by waterwingz, based on scripts by Fbonomi and soulf2. YASS is an advanced intervalometer script for CHDK-enabled Canon cameras that automatically adjusts exposure settings during sunset, sunrise, or other changing light conditions. Key features: - Automatic exposure ramping (shutter speed and ISO) - Intelligent ND filter control - Focus lock options (AFL/MF at infinity) - Configurable shot intervals and exposure compensation - CSV logging of exposure parameters - Battery-saving display blanking options Original work released under GPL license. Requires CHDK 1.2.0 build 3276 or higher (1.3.0+ recommended). Files added: - yass/yass4.lua: Main script (v4.8) - yass/README.md: Documentation and usage guide
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