BYgo

BYgo tells photographers what the light will do before they go. Ask Claude about any city, today or up to 15 days ahead, and get a photographer's answer: whether to go out, when the golden and blue hours fall, how hard or soft the shadows will be, and what to set on your camera or load in it.

What you can do:

• Get a shooting brief for a city and day, with specific ideas and timings for natural or artificial light
• See light windows: blue hours, golden hours, solar noon, daylight length
• Understand shadow conditions through the day
• Get exposure references: inverse square law, Sunny 16, reciprocity failure for film, colour temperature
• Get starting camera settings, with depth of field and hyperfocal distance for your saved lens
• Get film recommendations: stocks, push and pull advice
• Rank a date range to find the best day to shoot
• Check historical cloud cover by month when planning a trip
• Find film labs and shops, camera shops and rental, and photography studios within 10 km

Works with a free BYgo account (5 briefs a month) or Pro (100). A brief is one city and one date; once counted, every other tool for that city and date is free for 24 hours. Connecting is read-only: Claude cannot change your BYgo account, gear, projects or photos.