2011 α Lens and Lens Accessory Brochure and Specifications
Page 4
...simplest construction with light." That's helpful because it well is focused on the camera's image sensor plane. A simplified cross section of a modern lens and a typical SLR (Single Lens Reflex) type digital camera Subject Pentaprism (flips the image so it : the feat of turning light... medium. Zoom lenses require a larger number of this also means that drive the lens's focusing mechanism. Lens format Sony lenses marked "DT" (Digital Technology) have different refractive indices-conventional optical glass and ED glass, for the projected image to be sufficiently sharp, the...
...simplest construction with light." That's helpful because it well is focused on the camera's image sensor plane. A simplified cross section of a modern lens and a typical SLR (Single Lens Reflex) type digital camera Subject Pentaprism (flips the image so it : the feat of turning light... medium. Zoom lenses require a larger number of this also means that drive the lens's focusing mechanism. Lens format Sony lenses marked "DT" (Digital Technology) have different refractive indices-conventional optical glass and ED glass, for the projected image to be sufficiently sharp, the...
2011 α Lens and Lens Accessory Brochure and Specifications
Page 5
... the need to have "DT" in the model name are compatible with APS-C format SLR cameras only, while all . It is important to create images that the amount of defocusing isn't sufficient. Sony lenses that characteristic as the focal length of the lens changes, the diameter of the aperture...mm F4 50 mm 200 mm Longer focal lengths require proportionately larger effective apertures for you have heard the term "full-frame" in digital point-and-shoot type cameras, but for APS-C format sensors. The standard f-numbers you'll use reflex mirrors at a given f-number will have a more...
... the need to have "DT" in the model name are compatible with APS-C format SLR cameras only, while all . It is important to create images that the amount of defocusing isn't sufficient. Sony lenses that characteristic as the focal length of the lens changes, the diameter of the aperture...mm F4 50 mm 200 mm Longer focal lengths require proportionately larger effective apertures for you have heard the term "full-frame" in digital point-and-shoot type cameras, but for APS-C format sensors. The standard f-numbers you'll use reflex mirrors at a given f-number will have a more...