Reviews Optical Elements- BestItemr.com

Sony 16-35mm Vario-Tessar T FE F4 ZA OSS E-Mount Lens

Ideal for landscapes and the a7 series of full frame cameras, ZEISS T (T star) coating to reduce flare and ghosting.
Minimum Focus Distance : 0.92 ft (0.28 m), Maximum Magnification ratio : 0.19x, Focal-Length : 5/8 – 1-3/8 Inches.
Three ED glass elements to suppress chromatic distortion, constant F4 maximum aperture throughout the zoom range.
Built-in Optical Steady Shot image stabilization, dust and moisture resistant design.
Angle of View (35 mm)107°-63° Angle of View (APS-C) 83°-44°. Weight- 18.3 ounce.Optical Design : 12 Elements in 10 Groups.

Lightweight and compact kids monocular with high-quality glass optics and 8x magnification power.
Multi-coated BK-7 glass optical elements deliver sharp and detailed image of high brightness level and in natural colors.
Reliable metal body is resistant to impacts.
embossed elements provide for a reliable grip.
Twist-up eyecup, diopter adjustment ring and long eye relief allow for observing with glasses on.
Young explorers, treasure hunters, and pirates love this optical instrument.

OPTICAL FEATURES: Focal length of 9mm / Maximum aperture of f/2.8.
MOUNT: Micro Four Thirds mount / APS-C (Super35) sensor format.
FEATURES: Ultra wide angle of view of 113° / Zero-D for little to no dispersion.
BUILD: 15 elements in 10 groups including 2 aspherical elements plus 3 extra-low dispersion elements.

Telephoto zoom is designed for Micro Four Thirds mirrorless cameras and provides an 80-300mm equivalent focal length range..
A Dual VCM (voice coil motor) system is used for quick and near-silent autofocus performance. By separating the focusing mechanism into two groups controlled by separate linear AF motors, focus speeds are faster and the friction-free movement is notably quieter to benefit video recording..
One aspherical ED (extra-low dispersion) element, two aspherical elements, one Super ED element, three ED elements, and one HD element are featured within the optical design to minimize both spherical and chromatic aberrations, distortion, and color fringing throughout the zoom range while also contributing to overall image sharpness, clarity, and color accuracy..
A ZERO (Zuiko Extra-low Reflection Optical) coating has been applied to individual elements to minimize lens flare and ghosting for improved contrast and color fidelity when working in strong lighting conditions..
Dust-, freeze-, and splash-proof design uses 11 separate seals to ensure the lens's performance in inclement and harsh conditions..

Lens features Nikon technologies including Aspherical Lens Elements, ED Glass Elements, ARNEO Coat and Fluorine Coat.
Lens features built-in Vibration Reduction image stabilization.
The customizable, clickless control ring offers quick and quiet access to most used camera settings.

19 elements in 14 groups for outstanding resolution.
Superior optical design eliminates aberrations and fringing. Closest Focusing Distance : 0.3m.
Z Coating Nano (advanced Zuiko extra low reflection optical coating).

The TS-X 1440 features an image-stabilizing function, based on Fujifilm’s optical and mechanical design technologies nurtured through its....
With the effective diameter of 40mm for objective lens elements, the TS-X 1440 achieves an advanced level of light-gathering power. The company’s....
Chromatic aberration is controlled by optimally positioning four objective lens elements in three groups and six ocular lens elements in four groups.....
Designed with water and fog proof seals (Nitrogen Purged). O ring sealed..
Rubber armored body allows user to have a firm grip..

New HD (High-Definition) Coating optimizes light transmission and minimizes reflection..
Weather resistant to handle damp, inclement conditions.
PENTAX SP coating protects the exposed lens elements.
ED glass optical elements for outstanding performance.
Focal length equivalent to 24.5mm to 130mm in the 35mm format.

... for APS-C-format cameras, this 55-210mm lens perfectly complements many kit zooms by providing an 82.5-315mm equivalent focal length range for telephoto applications. (Bulk Packaging).
E 55-210mm Lens Key Features: E-Mount Lens/APS-C Format.
A variable f/4.5-6.3 maximum aperture helps keep overall lens size and weight to a minimum, Two extra-low dispersion glass elements are featured in the lens design to help reduce chromatic aberrations and color fringing for improved clarity and color neutrality..
Two aspherical elements are incorporated in the lens design to reduce astigmatism, field curvature, coma, and other monochromatic aberrations. An internal focus mechanism contributes to faster, more responsive autofocus, the minimum focus distance of 3.3'..
Optical SteadyShot image stabilization helps to minimize the appearance of camera shake for sharper imagery when shooting handheld with slower shutter speeds. This stabilization system can be combined with select camera's sensor-shift type image stabilization for more effective c....

Modular platform accepts a variety of optical elements.
Elements can be interchanged to create a variety of lighting effects.
Hot aiming rotates 365-Degree, tilts 35-Degree and locks in position without tools.
Translating center beam optics provides full light output from 0-35-Degree.
Plaster lip with direction marks accommodates ceilings 1/2 to 1-Inch thick.

Tamron introduces the HLD (High/Low torque-modulated Drive) AF drive system. Full-time Manual Focus override allows you to make fine adjustments-without having to switch from AF to MF mode.
A shortened overall length vastly improves optical performance while maintaining a compact size-even with advancements such as VC and the newly developed HLD..
The optical design Includes 16 elements in 11 groups. A new large aperture Aspherical Lens and ld (low dispersion) Lens elements deliver exceptional resolution across the complete zoom range.
Country of Origin : Japan, Distancia mínima del objeto: 9.4 pulgadas.
Ángulo de visión (diagonal) - 108°44-60°2 (para formato APS-C), Minimalna odległość obiektu: 23,4 cm.