--- product_id: 541676093 title: "ERH India 1 Pc Convex Lens Diameter-75 mm Focal Length 50 cm for Auto-Focus Cameras, Projectors, DIY Science Experiments etc." brand: "erh india" price: "€ 6.73" currency: EUR in_stock: true reviews_count: 8 category: "Erh India" url: https://www.desertcart.gr/products/541676093-erh-india-1-pc-convex-lens-diameter-75-mm-focal store_origin: GR region: Greece --- # 50cm focal length for precise focus 75mm diameter for wide light capture Premium Indian-made glass quality ERH India 1 Pc Convex Lens Diameter-75 mm Focal Length 50 cm for Auto-Focus Cameras, Projectors, DIY Science Experiments etc. **Brand:** erh india **Price:** € 6.73 **Availability:** βœ… In Stock ## Summary > πŸ”¬ Elevate your visionβ€”focus on brilliance with ERH India’s precision lens! ## Quick Answers - **What is this?** ERH India 1 Pc Convex Lens Diameter-75 mm Focal Length 50 cm for Auto-Focus Cameras, Projectors, DIY Science Experiments etc. by erh india - **How much does it cost?** € 6.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/541676093-erh-india-1-pc-convex-lens-diameter-75-mm-focal) ## Best For - erh india enthusiasts ## Why This Product - Trusted erh india brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Robust & Reliable:** Made from high-quality glass in India, built to last through countless DIY and professional projects. - β€’ **Instant Focus Upgrade:** Optimizes auto-focus camera systems by delivering accurate distance measurement and sharp imagery. - β€’ **Crystal-Clear Precision:** Expertly crafted convex lens ensures razor-sharp focus for cameras, projectors, and experiments. - β€’ **Versatile Optical Power:** 50cm focal length perfectly balances magnification and clarity for diverse scientific and creative uses. - β€’ **Multi-Disciplinary Essential:** Ideal for photographers, hobbyists, educators, and scientists seeking enhanced visual accuracy. ## Overview The ERH India Convex Lens features a 75mm diameter and 50cm focal length, crafted from premium Indian glass. Designed for auto-focus cameras, projectors, and DIY science experiments, it delivers crystal-clear images and reliable optical performance, making it a must-have for professionals and enthusiasts aiming to sharpen their visual projects. ## Description High-quality Convex lenses Designed to perfection, our Convex lenses are expertly crafted to meet your diverse needs. Whether you're a scientist, photographer, or hobbyist, our lenses Cameras and Photography: Convex lenses are a fundamental component of cameras and photography equipment. They are used to focus light onto the film or image sensor, forming a sharp image. Different lens configurations, such as zoom lenses and wide-angle lenses, utilize Convex lenses to achieve specific photographic effects. Telescopes: Convex lenses play a crucial role in refracting telescopes, which use lenses to gather and focus light from distant objects. These lenses help to form an enlarged and focused image, allowing astronomers and enthusiasts to observe celestial bodies with greater detail. Projectors: Convex lenses are used in optical projectors to focus and enlarge an image onto a screen or surface. They help to direct and control the path of light, ensuring a sharp and clear projection. Auto-focus Cameras: Convex lenses are used in auto-focus camera systems to detect the correct focus point. By measuring the distance to the subject, the lens can be adjusted automatically to ensure sharp focus. Review: Overall it is a good product - The lens was very nice I can see through it properly, and the focal length was exact as shown in desertcart. Overall it is a good product. Review: Lena didn't work as indicated - Didn't work; had to return ## Features - Convex Lens Diameter: 75 mm FoCal Length 50 Cm - Ideal for Science Experiments and DIY Kits - High Quality Glass Material and Made in India - Can be used in various science experiments and science activities - Convex lens is crafted with precision, providing crystal-clear vision and enhanced visual activity ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C5J6H6Z6 | | Age Range (Description) | Adult | | Age Range Description | Adult | | Best Sellers Rank | #173,217 in Electronics ( See Top 100 in Electronics ) #10,558 in Cameras & Photography | | Brand | Erh India | | Customer Reviews | 3.2 out of 5 stars 35 Reviews | | Educational Objective | creative skills, science | | Included Components | Convex Lens | | Is Assembly Required | No | | Item Dimensions | 7.5 x 7.5 x 1 Centimeters | | Item dimensions L x W x H | 7.5 x 7.5 x 1 Centimeters | | Manufacturer | ERH India | | Manufacturer Part Number | 1PConvex Lens 50cm | | Manufacturer recommended age | 8 years and up | | Material | Glass | | Model Number | 1PConvex Lens 50cm | | Number of Items | 1 | | Number of Packs | 1 | | Size | Medium | | Theme | Science | | Unit Count | 1.00 Count | ## Product Details - **Age Range (Description):** Adult - **Brand:** Erh India - **Item dimensions L x W x H:** 7.5 x 7.5 x 1 Centimeters - **Size:** Medium - **Theme:** Science ## Images ![ERH India 1 Pc Convex Lens Diameter-75 mm Focal Length 50 cm for Auto-Focus Cameras, Projectors, DIY Science Experiments etc. - Image 1](https://m.media-amazon.com/images/I/11qp4eU26ZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Overall it is a good product *by A***I on 7 March 2025* The lens was very nice I can see through it properly, and the focal length was exact as shown in Amazon. Overall it is a good product. ### ⭐ Lena didn't work as indicated *by N***V on 5 October 2025* Didn't work; had to return ### ⭐⭐⭐⭐ Clear or good quality πŸ’― *by I***T on 11 August 2025* Good quality πŸ’― best for projector ## Frequently Bought Together - ERH India 1 Pc Convex Lens Diameter-75 mm Focal Length 50 cm for Auto-Focus Cameras, Projectors, DIY Science Experiments etc. - ESPtronics Convex Lens, 75mm Diameter, 20cm Focal Length, Ideal for Science Experiments, DIY Kits, Cameras, Telescopes Glass, Made in India --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/541676093-erh-india-1-pc-convex-lens-diameter-75-mm-focal](https://www.desertcart.gr/products/541676093-erh-india-1-pc-convex-lens-diameter-75-mm-focal) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-10-29*