The Sigma HC-21 for dp2 Quattro is an essential accessory designed specifically for Sigma's dp2 Quattro camera. This high-quality viewfinder attachment enhances the shooting experience by providing an alternative to the LCD screen when composing images. Crafted by Sigma, a renowned Japanese manufacturer celebrated for their exceptional optics and camera accessories, the HC-21 delivers precision viewing capabilities for photographers seeking greater accuracy and comfort when using their dp2 Quattro in various lighting conditions. Perfect for outdoor photography where screen glare can be problematic.