Vivo has launched a new 400mm telephoto extender for the X300 Ultra smartphone, enabling 17x optical zoom capabilities that significantly outperform standard mobile camera hardware for long-range photography.

Key Points

• The 400mm lens attachment provides 17x optical zoom, supplementing existing 200mm lens options for the vivo X300 Ultra.
• The hardware requires a dedicated case and bayonet mount, resulting in a heavy, top-heavy device configuration.
• Users must maintain a minimum focusing distance of four to five meters, limiting the lens's versatility for close-up subjects.
• The camera software supports custom image profiles, 200MP resolution, and 4K/120fps video recording while the extender is attached.
• Image quality remains strong at 800mm, though performance degrades at 1,600mm and beyond due to edge fringing and detail loss.

Why it Matters

This accessory demonstrates the extreme potential of modular smartphone photography, offering zoom capabilities that rival dedicated camera equipment for travel and specialized use. However, the significant physical bulk and handling challenges suggest this remains a niche tool for enthusiasts rather than a practical solution for the average consumer.