Focal Length, Field of View & Composition: From 7mm to 800mm

Content to be added - This article will provide comprehensive coverage of focal lengths and their compositional impact.

Article Outline

1. Field of View Fundamentals

• FOV calculations for full-frame, APS-C, and M4/3
• Crop factor implications
• Angular coverage measurements
• Diagonal vs horizontal FOV

2. Perspective and Composition

• Mathematical relationship between FOV and perspective
• Compression effects in telephoto lenses
• Wide-angle distortion characteristics
• Subject-to-background relationships

3. Practical Applications

• Landscape photography focal length choices
• Portrait lens selection criteria
• Street photography considerations
• Architectural photography requirements

4. Interactive Tools

• FOV calculator data sources
• Mobile apps and field tools
• Quick reference charts
• Visualization aids

This article structure is ready for in-depth content development.