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for A-mount lenses on full-frame E-mount camera, SLT-PD-AF with all AF lenses. [41] Sony Lens Adapter E/A 5 2020 Mount adapter 35mm 88g LA-EA5 only compatible with certain camera/lens combinations, [42] uses camera's on-sensor PD/CD AF (no mirror). [43] Sony Lens Adapter E/B 1 2019 Mount adapter S16mm 430g [44] LA-EB1
Field curvature: the image "plane" (the arc) deviates from a flat surface (the vertical line). Petzval field curvature, named for Joseph Petzval, [1] describes the optical aberration in which a flat object normal to the optical axis (or a non-flat object past the hyperfocal distance) cannot be brought properly into focus on a flat image plane.
The J-3 camera on board the KH-4B spy satellite was planned to use a 24in f3.5 Petzval lens. [4] In 2013, Lomography successfully launched a crowdfunding campaign at kickstarter.com to produce a new Petzval lens in Russia for film and digital cameras. [5] Lensbaby offers Petzval lenses for modern cameras under the Burnside and Twist names. [6]
Canon offered seven specialty lenses for the FD mount. The 35mm f / 2.8 Tilt-Shift lens is a perspective control lens which includes controls to shift the lens off-axis by ±11mm for perspective control. In addition to shift, it may be tilted ±8 degrees for depth of field control; both movements are possible simultaneously.
As of 2001, Petzl had approximately 600 products. [4] Later in 2002, the QUARK ERGO was developed and designed to be the first leashless, angled ice axe. [2] In 2004, Petzl's first fall arrest device for work at height was developed. In 2006, the Petzl corporation introduced new general director Pascal Bonino, and the Petzl Foundation was also ...
Lenses produced for 35 mm film cameras may mount well on the digital bodies, but the larger image circle of the 35 mm system lens allows unwanted light into the camera body, and the smaller size of the image sensor compared to 35 mm film format results in cropping of the image. This latter effect is known as field-of-view crop.