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2. Sigma 150-500mm f/5-6.3 DG OS HSM lens - Wikipedia

   en.wikipedia.org/wiki/Sigma_150-500mm_f/5-6.3_DG...

   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.

3. Sigma 50-500mm f/4-6.3 DG lens - Wikipedia

   en.wikipedia.org/wiki/Sigma_50-500mm_f/4-6.3_DG_lens

   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.

4. List of third-party Sony E-mount lenses - Wikipedia

   en.wikipedia.org/wiki/List_of_third-party_Sony_E...

   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 ...

5. Schneider Kreuznach - Wikipedia

   en.wikipedia.org/wiki/Schneider_Kreuznach

   The 1000 mm lenses, by comparison, give only an 18° angle of coverage, but require even less focal distance than other telephoto designs (slightly more than 1/2 the effective focal length, as opposed to about 2/3 for a normal tele lens). 180mm f/5.5; 180mm f/5.6; 240mm f/5.5; 270mm f/5.5; 300mm f/5.5; 360mm f/5.5 (for 4x5") [4] 500mm f/5.5 ...

6. Tokina - Wikipedia

   en.wikipedia.org/wiki/Tokina

   Tokina AT-X Pro 12–24 f /4.0 lens Tokina Co., Ltd. ( 株式会社トキナー , Kabushiki-gaisha Tokinā ) is a Japanese manufacturer of photographic lenses and CCTV security equipment. Lens designations

7. Ballistic eyewear - Wikipedia

   en.wikipedia.org/wiki/Ballistic_eyewear

   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.