#SIGMA 18 35MM F1 8 PLUS#

From wide open to standard apertures, this lens is highly flexible, covering the angles of view offered by multiple large-aperture, fixed focal length lenses. Sigma 18-35mm f/1.8 DC HSM Art Lens for Nikon F BH SI183518DCN MFR 210-306 679 reviews Authorized Dealer 0 36 Alternate mount shown Key Features F-Mount Lens/DX Format 27-52.5mm (35mm Equivalent) Aperture Range: f/1. In addition, the shallower depth of field makes possible a beautiful bokeh effect in the background, expanding photographic creativity.

#SIGMA 18 35MM F1 8 PLUS#

But the lens plus SpeedBooster may vignette slightly at the widest aperture as the image circle of 28.4mm does not fully cover the 4K.

That’s a focal reducer that will increase the image brightness and improve the resolution. As compared to a F2.8 lens in the same photographic conditions, it allows the photographer to use a shutter speed that is one stop faster, reducing the influence of camera shake. You can connect the lens with various adapters including the new Metabones SpeedBooster EF for BMPCC4K (0.71x). Its bright viewfinder makes it easy to confirm focus and compose perfect shots. In terms of adjustment it is much easier than 18-35mm. Because the lens is so large in FL I did not need the tripod. The 18-35mm F1.8 DC HSM next-generation large-aperture standard zoom lens is the world’s first* to deliver F1.8 brightness throughout the zoom range. Also, I was told by the Sigma reps that second distance adjustment effects the first and the third effects the second and so on especially on small wide lenses. Although fixed focal lenses have been superior to zoom lenses in terms of f-number brightness and overall performance, they offer only a fixed angle of view, requiring photographers to carry several with them and change lenses as necessary. The downside, however, is that F2.8 has been the limit of zoom lens brightness, forcing photographers to select fixed focal length lenses for brighter f-numbers. The 18-35mm F1.8 DC HSM next-generation large-aperture standard zoom lens is the worlds first to deliver F1.8 brightness throughout the zoom range. Zoom lenses are extremely convenient, providing a wide range of angles of view with just a twist of the zoom ring. Thanks to its hard-earned knowledge of lens design and advanced lens manufacturing techniques, SIGMA has succeeded in creating a lens that offers F1.8 throughout the zoom range, as well as exceptional image quality at wide open aperture. Advanced production technologies have made possible a large-diameter molded glass aspheric lens, which teams up with SLD (Special Low Dispersion) glass elements to optimize power distribution and minimize axial chromatic and spherical aberration and field curvature. Ongoing technological innovation at SIGMA’s Aizu Factory has also contributed to further enhancements in lens production. SIGMA gained this know-how when it developed such super wide angle zoom lenses as the SIGMA12-24mm F4.5-5.6 II DG HSM and SIGMA 8-16mm F4.5-5.6 DC HSM. To minimize astigmatism across the zoom range, SIGMA leveraged its extensive experience in reducing optical aberrations and designing advanced structural elements. As the f-number decreases, so does the depth of focus, making it extremely difficult to minimize spherical aberration, axial chromatic aberration, astigmatism and field curvature. To develop a large aperture zoom lens with a maximum aperture of F1.8, it was necessary to solve a variety of technical challenges.

Sigma 18 35mm f1 8