Sigma Drop in Filter for 300-600mm f/4 DG OS Lens

This Drop-In CPL Filter from Sigma is designed for their 300-600mm f/4 DG OS Sports Lens to help expand the possibilities of your lens. The filter features a rotating knob for adjustment, allowing you to control reflections and glares on surfaces like water and glass while also enhancing contrast.

The Sigma RND-21 Drop in WR Variable ND Filter is specifically designed for the Sigma 300-600mm f/4 DG OS lens. This weather-resistant variable neutral density filter slots directly into the rear of the lens, providing seamless light control without the need for bulky front filters. Ideal for wildlife and sports photographers shooting in changing light conditions, this filter allows for greater exposure flexibility and creative control while maintaining the optical quality Sigma is renowned for