Feature:1. 420‑800mm Zoom: With 420‑800mm super telephoto, telephoto lens is good for shooting distant scenery, wildlife, concerts, bird observation, etc.2. Adapter Ring: The lens itself is a T2 mount, which can be installed on the telescope for moon observing, etc. Using the included adapter ring, it can be installed on the AI mount SLR camera for shooting distant objects3. High Strength: Manual zoom type, all metal structure, optical glass also has multi layer MC coating for better strength and impact resistence,4. Easy to Carry: High quality aluminum alloy body with exquisite texture, compact shape and volume design, easy to carry, can also be fixed by bracket ring.5. UV Filter: Self contained UV filter can reduce the blue caused by ultraviolet light, helping to improve the clarity and color reduction effect.How to Use:1. Turn on "Shutter Release: No lens" (if supported) and set the camera to M mode.2. Adjust lens to desired aperture/set distance.3. Finely adjust the front focus ring to focus on the subject and take sample photos. If the picture becomes dark, set of the following step. Reduce shutter speed from 1/500s to 1/100s or 1/50, etc.Specification:Item Type: Telephoto LensMaterial: Alloy + Optical GlassColor: As ShownLens Type: Manual FocusProduct Size: Front End Filter Diameter: Approx.67mm/2.6inLatest Focusing Distance: Approx.1.6m/63.0inFocal Length: 420-800mmOptical St
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