What is modulation transfer function (MTF) and how is it used to evaluate lens sharpness?

May 4, 2011 ... Canon's New Super Tele Lens Size Comparison ... I use the 300mm f2.8 a lot for my work and on a 1.3 crop 1dMKIV it's often just right. I can see ... Telephoto · 56mm F1.4 DC DN | C · CONTEMPORARY · 56mm F1. · 85mm F1.4 DG HSM | A · ART · 85mm F1. · 85mm F1.4 DG DN | A · ART · 85mm F1. · 90mm F2.8 DG DN | C. A review of the Zeiss 85mm f/4 Tele-Tessar for Leica M mount. This lens is often overlooked by those looking for a telephoto M lens, but for many it is the ... Sep 16, 2023 ... dpitt ... I would look at the excellent R tele lenses. The 80mm–200mm f/4 Vario-Elmar-R would be 2 birds with one stone. Zoom and tele + very high ... E-mount · Fixed focal length lenses · Macro lenses · Zoom lenses · Converter. Apr 14, 2025 ... The best telephoto lenses · Canon EF 70-300mm f/4-5.6 IS II USM review · Canon RF 100-400mm f/5.6-8 IS USM · Nikon AF-S 80-400mm f/4.5-5.6G ED ... Tech Specs ... Made with aerospace grade metal and the same hand-polished glass used for high-end 4K film lenses. Includes a lens cap and microfiber carrying bag. Nov 14, 2019 ... What is a telephoto lens? A telephoto lens has a longer focal length than a standard lens, yielding a magnified image and a narrow field of view ... This is what most people are going to get as their first wide angle zoom lens and it's a great choice from Canon and hard to beat for the price. Sigma 18-35mm ... Telephoto lens ... "Telephoto" redirects here. For the technique for transmitting images, see Wirephoto. A telephoto lens, also known as telelens, is a specific ...