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Iris-fixated intraocular lens is an intraocular lens that is implanted surgically into the eye and attached to the iris. Originally developed for aphakia, phakic versions have also been produced to correct myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. They are suited for correction of eyes where corneal refractive ...
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Finderscopes usually come with a designation of the form A×B, where A is the magnification and B is the aperture of the finderscope's objective lens in millimeters; for example, a 6×30 finderscope means a finderscope with a 30 mm objective and a magnification of 6×.
The Large Binocular Telescope at the Mount Graham International Observatory in Arizona uses two curved mirrors to gather light. An optical telescope is a telescope that gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct visual inspection, to make a photograph, or to collect data through electronic image sensors.
Scope mounts are rigid implements used to attach (typically) a telescopic sight or other types of optical sights onto a firearm. The mount can be made integral to the scope body (such as the Zeiss rail) or, more commonly, an external fitting that clamp onto the scope tube via screw-tightened rings (similar to pipe shoes). The scope and mount ...
The scope base is the attachment interface on the rifle's receiver, onto which the scope rings or scope mount are fixed. Early telescopic sights almost all have the rings that are fastened directly into tapped screw holes on the receiver, hence having no additional scope base other than the receiver top itself.
The lens is thus a telephoto lens, nowadays usually used for portrait photography. It's exclusively made for SLR cameras. There are two versions of this lens, namely Jupiter-6 in M39 mount (not to be confused with LTM, this is the SLR version of the mount for early Zenit cameras) and Jupiter-6-2 in M42 mount. This lens is really big and heavy.
8mm T3.1 Cine UMC FISH-EYE II Cine Lens [351] 8mm T3.8 VDSLR UMC Fish-eye CS II Cine Lens [352] 10mm T3.1 VDSLR ED AS NCS CS II Cine Lens [353] 12mm T2.2 Cine NCS CS Cine Lens [354] 16mm T2.2 VDSLR ED AS UMC CS II Cine Lens [355] 21mm T1.5 ED AS UMC CS Cine Lens [356] 35mm T1.3 AS UMC CS Cine Lens [357] 50mm T1.3 AS UMC CS Cine Lens [358] Photo ...