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Posts Tagged ‘Ceramic’

Sigma demos WR Ceramic lens filter strength with impact test

26 Jan

In a newly released video, Sigma tests the strength of its protective ceramic lens filters in an impact test. Putting claims of toughness to the test, the video shows a 49g / 1.7oz metal ball dropped from a height of about 1.3m / 4ft onto the WR Ceramic Protector as well as three competing lens filters. While the ceramic protector survives unscathed, the competition isn’t so lucky.

In addition to its WR Ceramic Protector, the video features a ‘conventional protector,’ ‘Brand A Chemically Strengthened Glass Protector,’ and a ‘Brand B Chemically Strengthened Glass UV Filter.’ According to Sigma, the WR Ceramic Protector is 1000% stronger than a conventional protector and 300% stronger than a chemically strengthened glass filter. The ceramic filters are also scratch-resistant with a water-repellant coating.

Sigma has a half dozen new WR Ceramic Protectors available now:

  • 67mm for $ 93 USD
  • 72mm for $ 108 USD
  • 77mm for $ 118 USD
  • 86mm for $ 202 USD
  • 95mm for $ 247 USD
  • 105mm for $ 315 USD

Via: Sigma Blog

Articles: Digital Photography Review (dpreview.com)

 
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Sigma Announces Protective Lens Made of Clear Glass Ceramic

16 Dec

Sigma has created an all-new protective filter, the Sigma Water Repellent (WR) Ceramic Protector, using Clear Glass Ceramic with water and oil repellent coating. This is the first filter to use such a material in its construction. It promises both lighter weight and higher strength than normal protective filters with minimal effects on transmittance and sharpness.

It will be available in common filter thread sizes between 67mm and 105mm. See the press release below for more info, or take a look at it on their website at: http://www.sigmaphoto.com/wr-ceramic/


Press Release:

SIGMA CORPORATION ANNOUNCES WORLD’S FIRST PROTECTIVE LENS MADE OF CLEAR GLASS CERAMIC

RONKONKOMA, NY — December 16, 2015 – Sigma Corporation of America, a leading DSLR lens and camera manufacturer, today announced the new Sigma Water Repellent (WR) Ceramic Protector, a lens filter that features new Clear Glass Ceramic material and provides enhanced protective qualities. Pricing and availability is not yet available.

This shock- and scratch-resistant Clear Glass Ceramic was developed specifically for Sigma in partnership with a glass manufacturer. Made with a special heat treatment that evenly precipitates microcrystalline spinel throughout the materials, the Clear Glass Ceramic is 10 times stronger than a conventional protective filter and three times the strength of a chemically strengthened filter. The lens protector also contains WR coating, which repels water, dust and oil, and allows fingerprints to be easily removed. This enhanced protection helps to preserve the lens and ensure long-term, top-notch image quality.

“The Sigma WR Ceramic Protector is the latest example of Sigma’s dedication to innovative and first-to-market photography equipment,” said Mark Amir-Hamzeh, president of Sigma Corporation of America. “The new Clear Glass Ceramic protector is the first of its kind and the strongest material used in the industry. It will enable photographers to safeguard their lenses, while maintaining the impressive sharpness offered by high-quality glass, like our Global Vision line of lenses.”  
Key features of the Ceramic Protector include:

  • Scratch-resistant – Sigma’s Clear Glass Ceramic offers a Vickers hardness number of 700HV. The strength of the Clear Glass Ceramic is much stronger than chemically strengthen glass and is; 10 times stronger than conventional filters
  • Thinner and lighter – This new protector is up to 50 percent thinner and is up to 30% lighter than previous Sigma filters
  • High transmittance – Sigma’s Clear Glass Ceramic offers very high transmittance, making it ideal for use as optical glass
  • Water- and oil-repellent coating – The water repellent coating reflects only 0.24 percent of visible light, thereby minimizing flare and ghosting. Its ability to repel both water and oil is also excellent, with water drops bouncing right off, and fingerprints easily to remove

This filter is offered in the most popular filter thread sizes, and is compatible with all Sigma lenses and other lenses that accept front filter threads that are 67mm-105mm diameters. Compatible lenses in Sigma’s Art line include: 35mm F1.4 DG HSM, 30mm F1.4 DC HSM, 18-35mm F1.8 DC HSM, 24-35mm F2 DG HSM, 24-105mm F4 DG OS HSM, 50mm F1.4 DG HSM, 24mm F1.4 DG HSM, 19mm F2.8 DN, 30mm F2.8 DN and 60mm F2.8 DN. Compatible lenses in the Sports line include the 120-300mm F2.8 DG OS HSM and 150-600mm F5-6.3 DG OS HSM. Compatible lenses in the Contemporary line include the 17-70mm F2.8-4.0 DC OS HSM, 18-200mm F3.5-6.3 DC OS HSM, 18-300mm F3.5-6.3 DC OS HSM and the 150-600mm F5-6.3 DG OS HSM. As with all of Sigma’s lenses, the filter is checked with Sigma’s own Modulation Transfer Function (MTF) measuring system, “A1,” in the company’s factory in Japan. 

For information about Sigma, go to www.sigmaphoto.com or follow the company on Twitter, Instagram and Facebook.

Articles: Digital Photography Review (dpreview.com)

 
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The Beauty Beneath: Ceramic Tile Illusion on Electric Box

24 Mar

[ By Steph in Drawing & Digital. ]

street ceramic 4

The ugly banality of a worn beige electrical box in a Lisbon plaza seems to give way to colorful ceramic tiles hidden beneath, the paint cracking and peeling to reveal a glimpse traditional Portuguese patterns. Street artist Diogo Machado (known as Add Fuel) completed this optical illusion as part of the Trampolins Gerador project, which aims to revitalize the city through urban art, performance, music and other interventions.

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The work is a continuation of Machado’s Ceramic series combining contemporary street art with Portuguese ‘azulejo,’ tile patterns that have been a part of the country’s history for centuries. The artist often collaborates with other street artists to fuse these decorative historic details with other styles, bringing them to the city streets in a new way.

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Electrical boxes, substations, bathrooms and other less-than-aesthetically-pleasing elements found on city streets are generally eyesores, making them an ideal canvas for imaginative transformations.

micro cities

city camouflage

Street artist EVOL turns them into tiny buildings, while Dutch designer Roeland Otten disguises them by blending them into their environments.

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[ By Steph in Drawing & Digital. ]

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Street Art – Hand Painted Ceramic Tiles By Katie Holten

13 Dec

A few nice visual art images I found:

Street Art – Hand Painted Ceramic Tiles By Katie Holten
visual art
Image by infomatique
A NEW VISUAL arts exhibition has opened in Dublin which features over 90 artists from five continents.

Dublin Contemporary 2011 includes a range of talks, tours and special events in conjunction with a wide range of exhibits.

Four main galleries are participating in the event – the Douglas Hyde Gallery, the Hugh Lane, the National Gallery of Ireland and the Royal Hibernian Academy – and a major exhibition called The Office of Non-Compliance is housed in Earlsfort Terrace (I have obtained a press pass and hope to visit next week).

The Iveagh Gardens are being transformed into a sculpture garden throughout the six-week event.

Meanwhile, out on the city’s streets, artist Katie Holten has been leaving a series of hand-painted ceramic tiles bearing lines from On The Nature of Things by Lucretius.

Street Art – Hand Painted Ceramic Tiles By Katie Holten
visual art
Image by infomatique
A NEW VISUAL arts exhibition has opened in Dublin which features over 90 artists from five continents.

Dublin Contemporary 2011 includes a range of talks, tours and special events in conjunction with a wide range of exhibits.

Four main galleries are participating in the event – the Douglas Hyde Gallery, the Hugh Lane, the National Gallery of Ireland and the Royal Hibernian Academy – and a major exhibition called The Office of Non-Compliance is housed in Earlsfort Terrace (I have obtained a press pass and hope to visit next week).

The Iveagh Gardens are being transformed into a sculpture garden throughout the six-week event.

Meanwhile, out on the city’s streets, artist Katie Holten has been leaving a series of hand-painted ceramic tiles bearing lines from On The Nature of Things by Lucretius.

 
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Posted in Photographs