Enhance your photography experience with the Ec-R Focusing Screen for EOS 1, 1N, and 1N-RS cameras by Canon. This genuine Canon focusing screen ensures precise and accurate focusing, improving the quality of your images. Compatible with EOS 1, 1N, and 1N-RS models, this focusing screen is easy to install and offers clear visibility of your subject. The Ec-R Focusing Screen for EOS 1, 1N, 1N-RS is a must-have accessory for photographers looking to achieve sharp and well-focused shots. Explore the world of Canon focusing screens and elevate your photography game with this high-quality product.