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The Sigma APO 150-500mm F5-6.3 DG OS HSM lens is a super-telephoto lens produced by Sigma Corporation. It contains three SLD (Special Low Dispersion) glass elements to provide correction for chromatic aberration. It is aimed toward advanced consumer level photographers, and is available in Nikon, Canon, Pentax and Sigma camera mounts.
The Sigma 50-500mm f / 4-6.3 EX DG HSM is a super-telephoto zoom lens produced by Sigma Corporation. It contains four SLD (Special Low Dispersion) glass elements to provide correction for chromatic aberration.
18mm f/2.8 Cine Lens [478] 21mm f/1.5 Cine Lens [479] 25mm f/1.4 Cine Lens [480] 35mm f/1.2 Cine Lens [481] 50mm f/1.1 Cine Lens [482] 75mm f/1.4 Cine Lens [483] Photo Lens 35mm f/1.7 Lens [484] Thingyfy. Pinhole Pro S 11mm (pinhole lens) (0.14mm aperture) [485] Pinhole Pro S 26mm (0.1-0.8mm aperture) [486] Pinhole Pro X 18-36mm (F160-240) [487 ...
Interchangeable lenses for digital and conventional SLR cameras, including compact high-ratio zoom lenses of which Tamron was the pioneer in 1992 when it released the 28–200 mm. [3] The most-current lens of this type is the AF 16–300 mm F/3.5-6.3 Di II VC PZD MACRO. Tamron was the maker of the manual-focus Adaptall series which have ...
Ballistic sunglasses or prescription eyeglasses must meet the same requirements. In brief, the U.S. military standard requires that ballistic eyewear must be able to withstand up to a 3.8 mm (.15 caliber) projectile at 195 m/s (640 ft/s)) for spectacles and 5.6 mm (.22 caliber) projectile at 168–171 m/s (550–560 ft/s) for goggles.
A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye.
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