Best Lens Focal Length

Sony SEL-20F28 E-Mount 20mm F2.8 Prime Fixed Lens (Renewed)

  • Minimum Focus Distance : 0.66 ft (0.2 m), Maximum Magnification ratio : 0.12x.
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Sony SELP18105G E PZ 18-105mm F4 G OSS , Black

  • High performance E mount lens with excellent contrast.
  • Minimum Focus Distance : 1.48 (Wide) 3.12 ft (Tele), Maximum Magnification ratio : 0.11x, Focal Length : 18 105 mm.
  • Versatile 27 158mm (35mm equiv.) zoom range. Angle of view (APS C): 76° 15°. Number of aperture blades are 7.
  • Constant F4 maximum aperture throughout the zoom range. Filter diameter (mm):72 mm.
  • It is recommended that you use a lens hood to reduce flare and ensure maximum image quality.Focal Length (mm) 11/16 4 1/8 35 mm equivalent focal length (APS C) 1 1/16 6 3/16 inches.
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Sony SEL16F28 16mm f/2.8 Wide-Angle Lens for NEX Series Cameras

  • Lens not Zoomable. Footnotes:"35 mm equivalent focal length (APS-C)" and "Angle of View (APS-C)" are with interchangeable lens digital camera....
  • Minimum Focus Distance : 0.8 ft (0.24 m).
  • Focal Length : 16 mm. Angle of View (APS-C)- 83°. 35 mm equivalent focal length (APS-C)- 24 mm.
  • Compatible with optional VCL-ECU1 ultra-wide converter and VCL-ECF1 fisheye converter.
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Canon 242R241 Extender EF 2X III, White/Black

  • Extends the focal length of your lens by 2x.This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L.
  • Outstanding image quality thanks to new optical design and improved AF performance.
  • Highly resistant to dust and water for use in harsh conditions.
  • Built in micro computer enables effective communication between lens and camera.
  • Lens coatings are optimised to minimise ghosting and flare.
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OLYMPUS M.Zuiko Digital ED 12-40mm F2.8 Pro Lens, for Micro Four Thirds Cameras

  • Focal length: 12 to 40 millimeter, minimum focus distance 7.87 inches (20 centimeter ).
  • Dust proof, splash proof, and freeze proof construction. Lens construction: 14 elements in 9 groups (Aspherical ED lens, 2 Aspherical lenses, DSA lens, 2 ED lenses, HD lens, 2 HR lense).
  • Includes lens hood and pouch, filter size 62 millimeter, equipped with manual focus clutch mechanism.
  • Compatible with Olympus and Panasonic cameras.
  • Focal length: 12 to 40 millimeter, minimum focus distance 7.87 inches (20 centimeter).
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HMANE Telescope Reflector Main Mirror 1600mm with Secondary Mirror 40mm, Newton Reflector Spherical Mirror DIY Astronomical Telescope Mirror Kit, 226SQ59LARZVJE14JMZ8XR

  • Contains a primary lens with an objective lens diameter of 203mm and a focal length of 1600mm, and a secondary mirror with a short axis (short side diameter) of 40mm length. This is the core component of a set of mirrors..
  • Features: The main mirror is a spherical mirror with aluminized surface and a protective film to prevent scratches on the main mirror under light touch. The workmanship is excellent..
  • Advantages: Compared with cheap telescopes on the market, our primary mirror has a diameter of 203mm and a large-aperture optical glass with a focal length of 1600mm, which can see farther, and the focal length is as high as 1600mm, which can significantly reduce the imaging failure caused by spherical aberration. Real, greatly improved the experience, this is a professional DIY telescope lens set..
  • This kit has more collection and commemorative opinions. At the same time, the lens can support the famous schlieren experiment. It can make the home a laboratory in seconds, suitable for teaching, childrens hobby training, hands-on and other ability training..
  • Tips: For the fixation of the eyepiece, lens barrel, and fixed lens. You need to buy them by yourself..
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VILTROX EF-EOS M2 Speed Booster Canon 0.71x Autofocus Speedbooster Canon EF-M Lens Adapter Compatible with Canon EF to m50 m200 m6 m5 m50 ii m6 ii

  • The VILTROX EF-EOS M2 is designed to allows Canon EF lenses to be mounted on the Canon EOS M mirrorless camera, compatible with all lens functions. Can increase the lens 1 f-stop, increasing the amount of light into the virtual background, can better highlight the theme ..
  • Allows the aperture increased by one level while the focal length is reduced (equivalent focal length= focal length x 0.71 x 1.6), increase the lens 1 f-stop, Bring better photo bokeh..
  • Signal transmission using PIN gold needle, greatly enhanced its transmission performance, real-time preview of photo information on camera, full compatible with Canon lens and camera features, e.g. autofocus, image stabilization, auto aperture adjustment, etc..
  • 4 lens elements in 4 groups for optical clarity as well as color fidelity.Detachable tripod foot with 1/4"-20 accessory thread for direct attachment to tripods or quick release plates that feature 1/4"-20 mounts..
  • USB upgrade port: Through continuous software updates, VILTROX will help users get better shooting experience, fix product bugs and constantly adapt to the new EF lens, provide more Canon lens and camera combinations..
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Optical Glass Lens, 3' (75mm) - 200mm Focal Length - Ground, Beveled Edges - Use as Top Spinning Base - Eisco Labs

  • DOUBLE CONCAVE || Highly polished, double concave lens.
  • SPHERICAL || Lens measures 3" (75mm) in diameter and approximately 12mm thick.
  • 200MM FOCAL LENGTH || Diverging lens with a 200mm focal length.
  • OPTICALLY WORKED GLASS || Made of high quality, optically worked glass. Highly polished with beveled, ground edges.
  • GREAT FOR PHYSICS CLASSROOMS or TOP SPINNING || This optically true lens is excellent for physics classroom demonstrations in optics and light refraction. It's smooth, concave surface also makes this lens ideal for top spinning.
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Hasselblad XCD 45mm f/4 P Lens

  • Hasselblad 45mm F/4 XCD Lens - Front Lens Cap - Hasselblad 1 Year Limited or 1,000,000 Exposure Warranty.
  • Angle of View Diag/Hor/Vert: 61/50/39 Degree.
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