Diameter :14.0-14.5mm B C :8.6-8.7mm
Prized for event, portraiture, and sports shooting, the Canon EF, Nikon F and Sigma SA mount Sigma 70-200mm f/2.8 DG OS HSM Sports Lens is a flexible telephoto zoom characterized by its bright and sophisticated design. The fast constant f/2.8 maximum aperture excels in difficult lighting conditions and also offers increased control over depth of field for isolating subjects. In regard to the optical layout, an impressive 10 low dispersion elements are used to greatly reduce chromatic aberrations and color fringing for improved clarity and color accuracy. A Super Multi-Layer Coating is also featured, and helps to suppress ghosting and flare when working in strong lighting conditions. Complementing the optics is an Intelligent OS system, which minimizes the appearance of camera shake for sharper results when shooting handheld. A Hyper Sonic Motor is also used to provide quick and quiet autofocus performance along with full-time manual focus override. The physical design of the lens also incorporates several seals to guard against dust and moisture, and a water- and oil-repellent coating has been applied to the exposed elements to prevent moisture, fingerprints, or smudges from sticking to the surface. Additionally, a fixed rotating tripod collar is featured, and has a removable Arca-type compatible foot for wide compatibility with different tripod or monopod heads.
A fast telephoto prime, the Nikon F, Sigma SA and Canon EF-mount 135mm f/1.8 DG HSM from Sigma pairs bright and sophisticated optics with intuitive handling and design. As part of the Art line of lenses, this 135mm f/1.8 is designed for high-resolution rendering, and utilizes FLD and SLD glass to control chromatic aberrations and color fringing for notable clarity. A Super Multi-Layer Coating also enhances image quality by suppressing lens flare and ghosting for improved contrast and color fidelity in strong lighting conditions. Additionally, making it an ideal lens for portraiture, the bright f/1.8 maximum aperture pairs with a rounded nine-blade diaphragm to benefit selective focus and shallow depth of field imaging with smooth bokeh. Complementing the imaging capabilities, the lens sports a Hyper Sonic Motor to produce quick, smooth, and quiet autofocus performance with full-time manual focus override. The physical design utilizes Thermally Stable Composite material for durability in a wide range of environments, and a brass bayonet mount also offers rigidity and mounting precision. As part of the Art line within Sigma's Global Vision series, this lens is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications. Prime telephoto lens is designed for full-frame Canon EF-mount DSLRs, however can also be used on APS-C models where it will provide a 216mm equivalent focal length. Bright f/1.8 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques. Two F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements are featured in the optical design, and help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy. A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions. Nine-blade rounded diaphragm contributes to a smooth and pleasing bokeh quality. The integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time. The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations. The bayonet mount is constructed from brass for ensured accuracy and durability. Additionally, rubber sealing is incorporated in the mount design to render it dust- and splash-resistant. This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.
An impressive ultra wide-angle prime, the EF 14mm f/2.8L II USM is a Canon L-series lens well-suited for landscape, nature, and interior photography applications. Its relatively bright f/2.8 maximum aperture is well-suited to working in difficult lighting conditions and also makes this lens an ideal choice for astrophotography. The optical design incorporates two aspherical elements and two ultra-low dispersion elements to control both spherical and chromatic aberrations in order to realize a high degree of sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for increased contrast and color fidelity when working in backlit and harsh lighting conditions. A ring-type USM and internal focusing mechanism also afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying climates. Ultra wide-angle 14mm prime is compatible with full-frame Canon EF-mount DSLRs, as well as APS-C-sized models where it will provide a 22.4mm equivalent focal length range. Bright f/2.8 maximum aperture benefits working in low-light conditions and suits astrophotography applications. Two ultra-low dispersion elements are used to minimize chromatic aberrations as well as eliminate color blurring around the edges of subjects. Two aspherical elements help to minimize distortions and spherical aberrations in order to maintain edge-to-edge sharpness and illumination. Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions. A ring-type Ultrasonic Motor (USM), along with an internal focusing system, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override. As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions. Built-in lens hood helps to block stray light and also protects the bulbous front element. Lens's design accepts rear insert-type gelatin filters, which are cut-to-size and inserted behind the rear lens element.
Blending a compact form factor with versatile performance, the Nokton Classic 35mm f/1.4 II MC from Voigtlander is a fast wide-angle prime designed for M-mount rangefinder cameras. This updated, version II of the lens features a symmetrical optical design with one abnormal partial dispersion element, which retains the distinct character and high color accuracy rendering of the original, but also reduces curvature of field and astigmatism for improved focusing accuracy and more even sharpness across the entire image plane. This lens also features a multi-coating to suppress lens flare and ghosting for improved contrast and color fidelity when working in strong lighting conditions. Its manual focus design permits working with subjects as close as 2.3' away and a 10-blade diaphragm contributes to a pleasing bokeh quality to suit working with shallow depth of field. Focal Length 35mm Maximum Aperture f/1.4 Minimum Aperture f/16 Lens Mount Leica M Angle of View 63�° Minimum Focus Distance 2.3' / 70 cm Optical Design 8 Elements in 6 Groups Diaphragm Blades 10 Focus Type Manual Focus Filter Size 43 mm (Front) Dimensions (¸ x L) 2.2 x 1.1" / 55 x 28.5 mm Weight 6.67 oz / 189 g
Product Name:1.49/1.56/1.60/1.67 S/F Single Vision Lens Material:CR39/NK55/MR-8/MR-7 Index:1.499/1.553/1.598/1.665 Diameter:70/75mm Available Base:Plano~10.00 Abbe Value: 58/35/32 Coating: HC/HCT/HMC+EMI/SHMC Design: ASPH/SPH Color:Clear Transmittance:Over 93%/Over 96.5%/Over 97% Coating Color:Green,Blue
Belilang RO Polisher Buffing Pad Features : 1.Suitable for RO. Polisher machine 2.Made of German sponge which with good tensile . 3.Exclusive Patened product with convex hook and loop fastener 4.Unique Bonding technology decide it's long service life 5.Stock pads are available ,customized pads are welcomed 6.Different colors with different polishing effect . 7.Maroon for cutting , Yellow for Light cut, orange for polishing Black for finishing 8.6"sizes are available
Product Name: Single Vision Lens Material:NK55 Diameter:70, 65 Index:1.56 Power Range:SPH:-0.00~-14.00;CYL:-0.25~-2.00 SPH:+0.25~+8.00;CYL:-0.25~-2.00 Abbe Value: 38 Coating: UC/HC/HMC+EMI/SHMC Design: ASPH/SPH Color:Clear Transmittance:Over 96.5% Coating Color:Green,Blue,Gold,Purple
Product Name:1.67 Single Vision Lens Material:MR-7 Index:1.67 Power Range:SPH:-0.00~-800.00;CYL:-0.25~-2.00 SPH:+0.25~+8.00;CYL:-0.25~-2.00 Abbe Value: 32 Coating: UC/HC/HMC+EMI/SHMC Design: ASPH/SPH Color: Clear
Product Name: 1.56 hc Single Vision Lens Material: SR-55 Index: 1.56 Diameter:65,70,72 Power Range:SPH:-0.00~-8.00;CYL:-0.25~-2.00 SPH:+0.25~+6.00;CYL:-0.25~-2.00 Abbe Value: 35 Coating: HMC+EMI/SHMC Design: SPH Color: Clear
Product Name:Realkoko Tri Color Contact Lenses Manufacturer New Three Tone 14 mm Contact Lens Green Ringlight Contact Lenses Material:HEMA, MMA, NVP, AIBN and colorant Power Range:From 0.00D to -6.00D, each step 0.25D;above -6.00D, each step 0.50D Water Content:40 % Base Curve (mm):8.40mm ~ 8.60mm Diameter (mm):14.00mm ~ 14.50mm Center Thickness:0.06mm ~ 0.12mm Disposal Period:within one year. Expiry Date:5 years Package:PP blister package
Place of Origin:China Brand Name:Realcon Model Number:FA-71 Lenses Color:gray blue green brown purple Using Cycle Periods:Yearly Lenses Hardness:Soft Diameter:14.2 mm Center Thickness:0.06 -- 0.12 mm Color:13 colors Lens Hardness:Soft Using Cycle Period:Yearly Disposable Contact Lens Lens Design:Cast Molding Material:HEMA/NVP Base Curve:8.60mm Water Content:40% Power Range:S-0.00~5.00(0.25 step);S-5.00~10.00(0.50 step) Single package size: 4X2X7 cm Single gross weight:0.030 kg Package Type: Blister or Vial Packing
All kinds of bespoke optical waveplates
All kinds of bespoke optical crystals: BBO crystals LBO crystals
All kinds of bespoke optical filters: IR bandpass filters UV bandpass filters heat absorbing filters
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All kinds of bespoke infrared optics: Silicon ZnS ( zinc sulfide) Germanium Zinc Selenide
All kinds of regular and bespoke optical lenses: achromatic doublets, achromatic triplets, plano-convex lenses, plano-concave lenses, double-convex lenses, double-concave lenses, meniscus lenses, large aperture lenses, etc.
All kinds of bespoke optical reflectors: Dielectric HR mirror Metallic mirror
[Title] acridine hydrazide nsp-sa-adh [English name] nsp-sa-adh [molecular weight] 740.85 [Formula] c34h40n6o9s2 [appearance] yellow solid or powder [storage conditions] refrigerate at 2-8 , seal, dry and keep away from light [purpose] it can be used to mark proteins, antigens, antibodies, nucleic acids (DNA, RNA), etc. The terminal of acridine hydrazide is suitable to react with the polysaccharide, nucleic acid or protein containing aldehyde group and label it with acridine. [product advantage] Purity: 98% (HPLC), good water solubility, stable process, small batch difference.
