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The SeaFrogs 4" Optical Glass Flat Port is specifically designed for use with the lens Sigma 18-50mm F2
Zoom gear for Sony FE PZ 16-35mm F4 lens only
Photo/Video/S&Q switch
Weight: ±1534 GR (3
6 PZ OSS (autofocus only) Zoom gears are not available for the Sony FX3/FX30 and ZV‑E1/ZV‑E10 models that rely on in‑camera zoom control
Focus Gear for Sigma 16mm F1.4 DC DN E-Mount Lens Order_007 The SeaFrogs 4" Optical GlassVision Beneath: Focus Gear Focus Gear for Sigma 16mm F1. 4 DC DN E Mount Lens For Housings with 80mm Bayonet Polycarbonate Also available on the European website The Focus Gear for Sigma 16mm F1. 4 DC DN E Mount Lens allows precise manual focus control in underwater housings. It attaches to the lens focus ring and is operated via the housing's external focus dial. How It Works: Engages the Lens Focus Ring The focus gear, a ridged or toothed ring,