Patent: Another Multi Layer Related Sensor Patent from Canon

Patent: Another Multi Layer Related Sensor Patent from Canon

Below is another patent for a multi-layer related sensor patent from Canon has come to light. This is the third one that has appeared in the last month or so.

Keith over at Northlight breaks it down in a way that’s easy to understand. “The issue addressed, is light of the ‘wrong’ colour being reflected from one layer into another, which reduces the ability of different layers to respond to photons of only a particular range of colours. This has the potential to greatly improve the colour accuracy and fidelity of such stacked sensor designs.

Patent Publication No. 2014-130890 (Google Translated)

  • Publication date 2014.7.10
  • Filing date 2012.12.28
  • Multilayer sensor drawback of
  • G is light, the image quality is degraded and reflected by the surface of the layer between the G and B layer, re-enters the B layer
  • Canon patents
  • The provision of the dielectric film and the insulating film as an anti-reflection film
  • First insulating layer, B layer, a dielectric film, insulating film, dielectric film, G layer, a dielectric film, insulating film, insulating film, dielectric film, the R layer
  • By increasing the thickness of the dielectric film, to suppress the multiple reflection
  • The dielectric film is between the G layer and B layer, the reflectance with respect to G is lower than B

Source: [EG] via [NL]

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Recent Rumors

Canon EF 100-400 f/4.5-5.6L IS II [CR1]

Canon EF 100-400 f/4.5-5.6L IS II [CR1]

We’ve had more mentions of the telephoto lens to be announced with the EOS 7D Mark II on September 5, 2014. We’re told it is indeed the replacement to the EF 100-400 f/4.5-5.6L IS. This is something we’ve heard a lot about over the years, but it has to come true some day, right? (memories of the 24-70 f/2.8 replacement)

EF 100-400 f/4.5-5.6L IS II Specs

  • Rotating zoom ring
  • New IS system
  • Lighter weight than predecessor
  • 82mm filter thread
  • New coating
  • $2399 USD

This comes from what appears to be a new source, we should know more soon.

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Deal: Canon EOS 7D Body $794

Deal: Canon EOS 7D Body $794

6ave (99.2% approval) is selling the Canon EOS 7D body for $794 via ebay (Reg $999).

There are currently deals on the Canon EOS 7D at all the authorized retailers in the USA.

It does look like inventory clearance for the upcoming replacement.

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Dragonfly, Powered by Canon Lenses

Dragonfly is an innovative, multi-lens array designed for ultra-low surface brightness astronomy at visible wavelengths. Commissioned in 2013, the array is proving capable of detecting extremely faint, complex structure around galaxies.

According to Cold Dark Matter (CDM) cosmology, structure in the Universe grows from the “bottom up”, with small galaxies merging to form larger ones. Evidence of such mergers can be seen in faint streams and filaments visible around the Milky Way Galaxy and the nearby M31 galaxy.

Image Copyright University of Toronto

Image Copyright University of Toronto

But the CDM model predicts that we should see more of this structure than is currently observed. However, images obtained using even the largest, most advanced telescopes today contain scattered light that may be hiding this faint structure.

Dragonfly is designed to reveal the faint structure by greatly reducing scattered light and internal reflections within its optics. It achieves this using ten, commercially available Canon 400mm lenses with unprecedented nano-fabricated coatings with sub-wavelength structure on optical glasses.

Read More at the University of Toronto

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Canon Joins Cooperative Agreement to Reduce Patent Trolls

Canon Joins Cooperative Agreement to Reduce Patent Trolls

Asana, Canon, Dropbox, Google, Newegg and SAP Announce Formation of New Cooperative Patent-Licensing Agreement
 
TOKYO, July 10, 2014—Asana, Canon Inc., Dropbox, Google, Newegg and SAP today announced the formation of the License on Transfer (LOT) Network, a cooperative patent-licensing agreement that will cut down on patent troll litigation and the growing practice of patent privateering.
 
Patent litigation reached an all-time peak last year, with more than 6,000 lawsuits filed. Most of those suits came from non-practicing entities, also known as patent trolls—companies that don’t have a business outside of licensing and litigating patents.
 
More than 70 percent of the patents used by trolls come from still-operating companies. Indeed, in a growing trend called privateering, companies are selling patents to trolls that then use those patents to attack other companies. In some cases, those companies arrange to get a cut of revenue generated from the trolls’ suits.
 
The LOT agreement is a new kind of royalty-free cross-license meant to address these growing systemic problems. Member companies receive a license when the patents are transferred out of the LOT group. That means that companies retain their right to enforce a patent so long as they retain ownership of it. However, as soon as it is sold, a license to the other members becomes effective, protecting them from attacks by the troll to which the patent was sold.

Continue Reading »

A Summary of Sigma Lens Rumors

A Summary of Sigma Lens Rumors

A summary with the probability of upcoming Sigma lenses has appeared on sigma-rumors.com. Most of the lenses mentioned have been written about here in the past. Sigma’s focus over the last 2 years has been on high quality and affordable offerings, there’s no reason to think that won’t continue.

The most likely lenses to appear next would be:

  • 24mm f/1.4 DG ART
  • 85mm f/1.4 DG ART

Both of these lenses have a chance to appear at Photokina in a couple of months. I’d say the 85mm f/1.4 is a given, but the 24mm f/1.4 could fall to later this year or early 2015. With Zeiss expected to announce their Otus 85mm f/1.4 in September, Sigma could play spoiler with an optically great lens with autofocus at a much cheaper price.

The other lenses according to the site with the highest probability of happening are:

  • 24-70mm f/2 DG ART
  • 300-600mm f/? OS Sport

We’ve heard about both of these in the past, and I’m inclined to believe the supertelephoto zoom is definitely something Sigma is developing. The 24-70mm f/2, I’m not 100% sure on. If Sigma wants to differentiate themselves from the Canon and Nikon offerings, then such a lens would do the trick.

Read more at the Sigma Rumors roundup

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Deal: Canon EOS 6D $1399

Deal: Canon EOS 6D $1399

6ave (99.2% approval) is selling the Canon EOS 6D body for $1399 (Reg $1699 after $200 mail-in rebate) via ebay.

Canon EOS 6D Body $1399

 

6ave (99.2% approval) is selling the “white box” Canon EF 24-105 f/4L IS for $639 (Retail reg $1199) via ebay.

Canon EF 24-105 f/4L IS $639

*This item is probably grey market and is not technically eligible for a Canon USA warranty. Although there have been reports of warranty repairs being done anyway.

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Video Review: Canon EF-S 10-18 f/4.5-5.6 IS STM

Kai from DigitalRev has completed his video review of the brand new Canon EF-S 10-18 f/4.5-5.6 IS STM lens. This $299 lens for APS-C shooters seems to be getting a lot of praise, most of which is based around its extremely affordable price.

I have used the lens a couple of times and find it to be nearly as good as the EF-S 10-22 f/3.5-4.5, especially as an ultra wide angle walk around lens in cities. Pair it with an EOS Rebel SL1, and you have a pretty good light weight hiking setup as well.

Canon EF-S 10-18 f/4.5-5.6 IS STM $299: Amazon | B&H Photo | Adorama

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EOS 7D Mark II Announcement September 5, 2014?

EOS 7D Mark II Announcement September 5, 2014?

In our previous mention of a released date for the EOS 7D replacement, we speculated it would be some time during the week of September 8, 2014. However a couple of people have said the embargo will actually end at midnight on Friday, September 5, 2014 EST. Photokina begins about 10 days later in Cologne, Germany.

This sounds reasonable, as it allows the week of booth setup in Germany without trying to hide marketing material like signs and banners.

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Deal: Canon EOS 7D Body $999, Kits From $1099

Deal: Canon EOS 7D Body $999, Kits From $1099

The big instant discounts of up to $600 on the Canon EOS 7D body and lens kits have begun. You can now get brand new EOS 7D bodies for $999, and lens kits starting at $1099.

 

Canon EOS 7D Body $999 (Reg $1499): Adorama | Amazon | B&H Photo

Canon EOS 7D w/28-135 $1099 (Reg $1699): Adorama | Amazon | B&H Photo

Canon EOS 7D w/18-135 $1299 (Reg $1799): Adorama | Amazon | B&H Photo

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