Compact Aluminum Focus Zoom Ring

Measurements: 10 cm × 8 cm footprint. Manufactured from lightweight yet stiff aluminum alloy — ideal for balancing responsiveness and inertia during dynamic shots. Surface treatment: matte black anodising for scratch resistance and visual discretion. No branding, logos, or decorative elements — strictly functional form following optical engineering principles. Installation method: Hand-tightened tension band requiring no tools, adhesives, or lens disassembly. Secures firmly on lenses with external focus or zoom rings measuring 60–78 mm in diameter. Maintains full lens rotation range and does not impede focus scale visibility or hard-stop detection. Target users include UK-based freelance videographers, university media departments, and small production houses seeking cost-effective, field-proven accessories that integrate seamlessly into existing DSLR workflows — especially where budget constraints rule out motorised or modular follow-focus systems.