Sigma 60-600mm DG OS HSM Sport

While it is a heavy lens, the built-in optical stabilization is highly effective at compensating for camera shake. You can certainly shoot handheld, especially in good light, but for extended sessions or lower shutter speeds, a monopod or tripod will significantly reduce fatigue and improve stability.

Yes, this is essentially an all-in-one solution for wildlife. The 60mm end allows for environmental shots, while the 600mm reach is perfect for capturing distant subjects like birds or animals without needing to swap lenses in the field.

The lens features a robust, dust- and splash-resistant construction designed for professional field use. While it is built to withstand demanding environments, it is still wise to use a protective cover if you are shooting in heavy rain or extreme conditions.

It is compatible with both. When used on an APS-C sensor, the crop factor will effectively extend your reach, giving you an even tighter field of view, which can be a distinct advantage for wildlife and sports photography.

The autofocus motor is specifically tuned for speed and precision, making it well-suited for tracking fast-moving athletes or wildlife. It is quiet and responsive, though performance can vary slightly depending on your camera body's own autofocus capabilities.

This lens requires a 105mm filter. Because of the large front element, be aware that filters of this size are a significant investment compared to standard 77mm or 82mm options.