Aperture Range: f/2.4 to f/22 Two Aspherical Elements Two ED and Three HR Elements Neutrino Coating Manual Focus Design with Focus Lock Rubberized Focus Ring Depth of Field and Focus Distance Scales Weather-Sealed ABS Plastic Housing Rounded Nine-Blade Diaphragm In addition to the imaging performance, this 15mm f/2.4 utilizes a manual focus design for fine-tuned control, and incorporates a unique positive focus lock to secure the focusing position at any point for consistent, repeatable shooting. As the Firefly version of this focal length, this lens is also distinguished by a lightweight ABS plastic exterior, printed lens markings, and weather-sealing about the lens housing to permit working in trying environmental conditions. The Firefly version of the 15mm f/2.4 lens features a lightweight ABS plastic exterior construction that is sealed against moisture and dust along the main body of the lens. The Firefly construction also incorporates a rubber focus ring for improved grip and control, and has printed focus distance and depth of field scales to aid working with pre-focusing and hyperfocal focusing techniques. Wide-angle prime designed for full-frame Canon EF-mount DSLRs, this lens can also be used on APS-C models where it provides a 24mm equivalent focal length. Two aspherical, three high-refractive index, and two extra-low dispersion elements are featured within the optical design to limit both spherical and chromatic aberrations, as well as color fringing and distortion, for improved clarity, sharpness, and even illumination. A Neutrino coating has been applied to limit lens flare and ghosting for improved contrast and color fidelity. Manual focus designed is benefitted by a positive focus lock mechanism to secure your focus position at any point to limit unwanted shifting of focus. A hard click stop indicates the infinity position on the focus ring for easy use in low-visibility conditions. Large depth of field scale benefits using hyperfocal and pre-focus techniques. Front of lens has 95mm-diameter filter threads and the rear of the lens accepts 30 x 30mm cut gel filters to lessen the likelihood of vignetting. Rounded nine-blade diaphragm contributes to smooth bokeh. Κωδικός προϊόντος: IL-15FF-EF Κατηγορίες: D-SLR, Φακοί Ετικέτες: Apografi, NoView
