An essential accessory for Nikon Dslr photographers, the HoodEYE Eyecup is meticulously designed to enhance your camera's viewfinder experience. This innovative eyecup is engineered to seamlessly replace your Nikon Dslr's standard rubber eyepiece, ensuring a snug and secure fit for a wide range of models including the D300, D300s, D200, D100, D90, D80, D70, D70s, D60, D50, D40, D40x, D3000, D3100, and D7000. Please note, it does not fit the D5000 and D5100 models.Crafted from high-quality, durable materials, the HoodEYE eyecup effectively blocks out intrusive light, providing a clearer and more focused view. This is especially beneficial for photographers who work outdoors or in brightly lit environments, as it minimizes glare and prevents light leakage that can disrupt your framing and concentration.The versatile design of the HoodEYE eyecup caters to both comfort and functionality. It is user-friendly, allowing for quick and easy installation, so you can spend more time capturing the perfect shot and less time adjusting your equipment. Its compact size is designed to complement your Nikon camera without adding unnecessary bulk.Despite some users finding the fit to be tight initially, the HoodEYE eyecup's snug fit ensures that once in place, it provides a reliable shield against external light sources. Its innovative design is a testament to Hoodman's commitment to providing photographers with tools that enhance their shooting experience.For Nikon Dslr users seeking to improve their viewfinder optics and enjoy a more comfortable and immersive photography experience, the HoodEYE Eyecup for Nikon DSLRs with Square Eyepieces stands out as a high-quality, versatile choice backed by positive customer feedback..