Mtrading S.r.l. con Socio Unico - Via Cesare Pavese, 31 - 20073 Opera (MI) - Cod. Fisc. / P.IVA IT08088770154 - R.E.A. 1201827 - Reg. Impr. Trib. Milano 253310
REG. AEE n. IT08020000000358 - REG. PILE n. IT09090P00001727 - Cap. Soc. € 110.000,00
DROP IN WR VARIABLE ND RND-21
Available mounts
The Sigma DROP-IN WR VARIABLE ND RND-21 is a dedicated drop-in filter designed for the SIGMA 300-600mm F4 DG OS | Sports lens. It allows photographers to adjust the neutral density effect via a built-in dial while the filter is mounted, enabling up to 7 stops of light reduction. This makes it ideal for achieving slower shutter speeds in bright conditions, such as during panning shots in motorsports photography.
Compatibility
SIGMA 300-600mm F4 DG OS | Sports
Available for L-Mount (RND-21TL) and Sony E-Mount (RND-21SE) versions
Note: Each version is mount-specific and cannot be used interchangeably (image shows the L-Mount version)
Included in the Package
Drop-In WR Variable ND Filter (pre-installed in dedicated holder)
Filter Features
Variable ND Range:
Reduces light from approx. 1.5 to 7 EV
Enables creative control over exposure and motion blur
WR (Water Repellent) Coating:
Repels water and oil
Scratch-resistant and antistatic
Minimizes flare and ghosting
Built-In Adjustment Dial:
Allows real-time ND effect tuning while shooting
Ideal for video and dynamic photography scenarios
Installation Notes
Remove the standard filter holder from the lens
Insert the RND-21 until it clicks securely into place
Rotate the Filter Rotator Dial while checking the live-view screen to achieve the desired effect
To remove, turn the Fixing Knob counter-clockwise and pull out the holder
Material e Design
High-quality optical glass
Integrated filter holder with adjustment mechanism
Designed for professional durability and precision
Made in Japan
SPECIFICATIONS
Compatible with:
300-600mm F4 DG OS Sports
EAN
0085126941765 (L-Mount)
0085126941758 (Sony E-mount)
0085126941758 (Sony E-mount)
* All figures calculated by L-Mount. Note: The L-Mount Trademark is a registered Trademark of Leica Camera AG.
About Product Name: Product name includes "DG" when the lens is designed to deliver the ultimate in performance on cameras with full-frame sensors, and "DN" when the lens design is optimized for mirrorless cameras with the short flange focal length.
About Product Name: Product name includes "DG" when the lens is designed to deliver the ultimate in performance on cameras with full-frame sensors, and "DN" when the lens design is optimized for mirrorless cameras with the short flange focal length.