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By admin, on December 15th, 2014
Canon is 20-100mm F4 of patent is being filed, If this product came into existence then it will soon become a prefect lens for street shooters and photojournalist, details below (translated by google)
Canon patent
- Positive and negative positive and negative positive 5-group zoom
- Inner zoom
- Inner Focus (fourth group)
- According to the invention, it is possible to appropriately define the refractive power arrangement and the lateral magnification of the zoom sharing ratio and the lens groups of zooming group, while reducing the size and weight and a high zoom ratio , it is possible to decrease the magnification ratio of a short-distance shooting is to achieve the image pickup apparatus having a zoom lens and it is suppressed.
Take a look at more Canon Patents
By admin, on December 10th, 2014
A new patent surfaced over the web that shows patent of a new all-rounder lens for the Canon Mirrorless camera system., Canon is also expected to announce new EOS M3 camera very soon,
Patent details
- Patent Publication No. 2014-228734 (Google Translated)
- Published 2014.12.8
- Filing date 2013.5.23
Example 3
- Zoom ratio 5.58
- The focal length f = 69.59-251.52-388.00mm
- Fno. 4.68-6.30-7.00
- Half angle ω = 11.11-3.11-2.02 °
- Image height 13.66mm
- Overall length of the lens 155.01-227.97-240.02mm
- BF 15.81-37.15-46.87mm
- Inner focus
Take a look at more Canon Patents
By admin, on November 30th, 2014
 Today a new sensor patent surfaced over the web that shows a completely new technology, we may see the new sensor tech may arrive in upcoming fullframe camera, but we are not confirmed yet.
We already seen many multilayer sensor patent from Canon, but this is completely new technology.. also see What to expect from Canon ?
By admin, on November 18th, 2014
A Canon new patent surfaced over the web that shows details of to be announced EF-S 11-24mm f/3.5-4.5 Lens, that may be replacement of Canon EF-S 10-22mm f/3.5-4.5 lens, take a look at the details below…
Example (Google Translated)
Zoom ratio 2.07
Focal length 11.61-15.50-24.07mm
Fno. 3.63-3.96-4.69
Half angle ω = 49.64-41.38-29.58 °
Image height Y = 13.66mm
Overall length of the lens 133.0-129.1-133.3mm
BF 3.26mm
Negative positive and negative positive 4-group zoom
Inner focus (Lf part of the first group)
src-egami
By admin, on October 29th, 2014
A new 35mm F1.4 Lens patent surfaced over the web, that shows successor of current EF 35mm f/1.4L lens, take a look at the technical details below translated by google
Translante by Google:
There are instructions Patent Document Solutions Shi · own
Laid-Open 2014-202952 designation
Publication date 2014.10.27
A willing Day 2013.4.5
Mika Example 1
The focal length f = 34.20mm
Fno. 1.45
Semi picture angle ω = 32.32 °
Like high Y = 21.64mm
Re nn zu full length 129.16mm
BF 39.35mm
via: EG
By admin, on October 19th, 2014
Canon filed a new patent for a new Lens Extender EF2x that employs DOE ( possibly enhanced diffractive optical element ) that minimizes Spherical aberration, astigmatism, other distortion and chromatic aberration caused by magnification of the lens extender.
Lens Patent Details
Explanation and self-interpretation of the patent literature
Patent Publication No. 2014-145870
Published 2014.8.14
Filing date 2013.1.29
Example 1
- Focal length -109.09mm
- Magnification 2.00x
- Lens configuration 4 group nine
- Diffractive surface 1 surface (the first group)
Master lens
- Focal length f = 293.76mm
- Fno. 2.91
- Half angle of ω = 4.21 °
- Image height Y = 21.64mm
- Lens length 275.41mm
- BF 53.79mm
- Lens configuration 11 group 15 sheets
- Protective glass 1
- Rear filter 1
- UD 2
- Fluorite 1
Canon patent of
- The most the joint surface on the object side of the cemented lens I to the diffraction plane
- This arrangement can suppress the flare
via-egami
By admin, on August 13th, 2014
Latest patent surfaced over the web that shows advance Dual pixel technology that shows significant improvement on AF tracking during burst mode. The technology will be implemented on on upcoming pro APS-C DSLR and Full Frame DSLRs.
The other most important improvement is now there no need to flip the mirror up and down during burst mode due to active Dual AF pixel sensor technology inside it.
Explanation and self-interpretation of the patent literature
- Patent Publication No. 2014-142372
- Published Date 2014.8.7
- Filing date 2012.1.22
- Canon patents
- I use the phase difference AF the first time
- I use the image plane phase difference AF with the second and subsequent
- There is no need to wait for the stable state up mirror, the mirror down
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