New advanced focus lock, infinity click and hyper-focal scale features by Irix is setting a new level of manual focus lens functionality. This is achieved through very sophisticated optical construction and a special neutrino coating, color aberration, ghosting and flare effects have been reduced to an absolute minimum. The new Irix Firefly lightweight lens has a minimum focusing distance of 0.28 meters and has nine rounded shaped aperture blades, this lens achieves amazing smooth "out-of-focus"areas. 95mm screw-in filters can be accommodated in the petal-shape lens hood and gelatin filters at the rear of the lens. The same optical performance and high quality mechanism as the Blackstone, but implemented in a lightweight body. Whether you sail, hike, drive or fly, the Irix Firefly 15mm f/2.4 will make your journey a pleasure. The ergonomic focusing ring offers the freedom to capture the most ideal moment, whether it is architecture or landscape scenery. The Firefly lightweight version has 3 rubber seals to protect the camera mount and focusing mechanism against dust and moisture the seals will also provide protection for front and side accidental water splashes. Lens Specifications Image Size: 35mm "Full Frame" Focal Length: 15mm Field of View: 110 degrees (diagonal) Focusing

0.28m - infinite Focusing Type: Manual with lock function Aperture Range: F/2.4 ? F/22 Aperture Control: Via camera Aperture Shape: 9 rounded blades Lens Construction: 15 elements in 11 groups (3x HR, 2x ED, 2x ASP) Front Filter Thread: 95 x 1.0mm Rear Gelatin Filter Slot: 30 x 30mm Dimensions (D x H): 114 x 100mm Weight: 608g Lens Features: Housing Material: Solid durable plastic Housing Outer Finish: Standard Focusing Ring Material: Anti-slip coating Markings Method: Printed Markings Paint: Standard Weather Sealing: Focus lock, focus ring, camera mount Case Included: Hard lens case Included in the Package: Irix 15mm F/2.4 Blackstone Lens hood with easy access facility for filter adjustments Front lens cap Two rear lens caps Soft lens pouch Metal box package What's in the box 15mm Prime Lens Pouch Lens Hood Lens Caps