SUMMARY
The Sony FE 100-400mm f/5.6-8 OSS lens provides 400mm reach for Sony E-mount users seeking an affordable telephoto option. Priced at $848, it is lighter and less expensive than Sony's higher-end telephoto lenses. Its variable aperture, darkening to f/8 at 400mm, necessitates good lighting conditions or high ISO tolerance, impacting background blur and sports photography. Despite the slow aperture, the lens offers good autofocus performance, a plastic build with weather-sealing, and impressive close-focusing capabilities. It is best paired with modern camera bodies that handle high ISO well, making it a practical choice for casual wildlife shooters.
TAKEAWAYS
Offers 400mm reach for Sony E-mount at a $848 price point.
Variable aperture (f/5.6-f/8) requires good lighting or high ISO tolerance.
Lightweight and portable, comparable to a 70-300mm lens.
Performs well with modern cameras that have strong high ISO capabilities.