Features: The viewfinder has a zoom range of 11:1 and is operated via lens extension, allowing scene composition to be adjusted for different situations. It can be used to confirm camera positioning and lens selection for professional film, TV, and video productions, as well as photography. Suitable for photographers and directors as an essential tool. Screen aspect ratios are variable, supporting TV, 35mm, 16mm, 1:1.66, 16:9, 1:1.85, 1:2.35, 1:2.55, 2/3 inch, 1/2 inch, and 1/3 inch camera formats. Constructed from high-quality aluminum alloy for durability. Compact design with a length of 6.5 cm (2.5 inches) and net weight of 119 g (4.2 oz), making it lightweight and portable. Includes storage bag, cleaning cloth, and neck strap for convenient and practical use. Specifications: Material: Aluminum Alloy Front Thread: 41mm Item Size: 6.5 x 4.1 x 4.1 cm (2.5 x 1.6 x 1.6 in) Item Weight: 119 g (4.2 oz) Package Size: 10.5 x 5.3 x 5.3 cm (4.1 x 2.1 x 2.1 in) Package Weight: 145 g (5.1 oz) Package List: 1 x Director's Viewfinder 1 x Cleaning Cloth 1 x Carry Bag