Canon patent for 12-60mm f/2-4 lens for 1.5″ sensors (PowerShot G1 X Mark III?)

Powershot G1 X
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Canon patent for an optical formula for a 12-60mm f/2-4 lens for 1.5″ sensors. This resolves to 24-105mm on 35mm equivalent. The PowerShot G1 X Mark II has an 1.5″ sensor, and a similar lens. Does this patent refer to the Powershot G1 X Mark III?

  • Patent publication number 2016-212248
    • Release date 2016.12.15
    • Application date 2015.5.8
  • Example
    • Zoom ratio 4.72
    • Focal length 12.84 20.16 60.62
    • F number 2.06 3.50 4.02
    • Half angle of view (degree) 41.74 28.80 10.33
    • Image height 9.22 10.23 11.25
    • Lens total length 83.06 84.07 101.55
    • BF 8.02 12.32 13.44
powershot g1 x mark ii
Is this patent referring the next iteration of the PowerShot G1 X series?

Excerpt for the patent literature (machine translated):

[Claim(s)] [Claim 1] In order, it comprises an object side to the image side from a rear group which has the 1st lens group of positive refracting power, the 2nd lens group of negative refracting power, the 3rd lens group of positive refracting power, and one or more lens groups,
It is a zoom lens from which an interval of said 1st lens group and said 2nd lens group spreads on the occasion of zooming from a wide angle end to telephoto end, and an interval of a lens group in which an interval of said 2nd lens group and said 3rd lens group is adjacent to on the occasion of narrowing and zooming changes,
Said 1st lens group has a positive lens and a negative lens,
When an Abbe number of material of a positive lens contained in said 1st lens group is set to nu1p and relative partial dispersion is set to thetagF1p, it is said 1st lens group,
nu1p<60.0
1.571×10 -5xnu1p2-3.437×10 -3xnu1p+6.976×10 -1<thetagF1p
It has the positive lens G1p with which it is satisfied of a becoming conditional expression,
When an Abbe number of material of a negative lens contained in said 1st lens group is set to nu1n and relative partial dispersion is set to thetagF1n, it is said 1st lens group,
nu1n<27.0
thetagF1n<-2.750×10 -3xnu1n+6.820×10 -1
It has the negative lens G1n with which it is satisfied of a becoming conditional expression,
When setting a focal distance of the whole system [ in / for a focal distance of the aforementioned positive lens G1p / f1p and a wide angle end ] to fw,
2.6<f1p/fw<30.0
A zoom lens satisfying a becoming conditional expression.
[Claim 2] When setting an aforementioned negative lens [ G1n ] focal distance to f1n,
-50.0<f1n/fw<-6.0
The zoom lens according to claim 1 satisfying a becoming conditional expression.
[Claim 3] When setting a focal distance of d1n and said 1st lens group to f1 for aforementioned negative lens [ G1n ] center thickness,
0.005<d1n/f1<0.050
The zoom lens according to claim 1 or 2 satisfying a becoming conditional expression.
[Claim 4] When setting a focal distance of d1p and said 1st lens group to f1 for center thickness of the aforementioned positive lens G1p,
0.030<d1p/f1<0.200
A zoom lens of a description in any 1 item of Claims 1-3 satisfying a becoming conditional expression.
[Claim 5] When the aforementioned positive lens G1p is arranged at the aforementioned negative lens [ G1n ] image side and a focal distance of d1a and said 1st lens group is set to f1 for distance on an optic axis from a lens surface on the image side which is the aforementioned negative lens G1n to a lens surface on the object side of the aforementioned positive lens G1p,
0.002<d1a/f1<0.070
A zoom lens of a description in any 1 item of Claims 1-4 satisfying a becoming conditional expression.
[Claim 6] In a zoom lens of a description in any 1 item of Claims 1-5,
-0.002<(thetagF1n-thetagF1p)/(nu1 n-nu 1p) <0.002
A zoom lens satisfying a becoming conditional expression.
[Claim 7] When setting a refractive index of aforementioned negative lens [ G1n ] material to N1n,
1.77<N1n
A zoom lens of a description in any 1 item of Claims 1-6 satisfying a becoming conditional expression.
[Claim 8] When setting a focal distance of said 1st lens group to f1,
3.0<f1/fw<50.0
A zoom lens of a description in any 1 item of Claims 1-7 satisfying a becoming conditional expression.
[Claim 9] When setting a focal distance of said 2nd lens group to f2,
-5.0<f2/fw<-0.5
A zoom lens of a description in any 1 item of Claims 1-8 satisfying a becoming conditional expression.
[Claim 10] When setting a focal distance of said 3rd lens group to f3,
1.3<f3/fw<8.0
A zoom lens of a description in any 1 item of Claims 1-9 satisfying a becoming conditional expression.
[Claim 11] When setting movement magnitude of said 1st lens group for zooming from a wide angle end to telephoto end to M1,
-20.0<M1/fw<-0.7
A zoom lens of a description in any 1 item of Claims 1-10 satisfying a becoming conditional expression.
[Claim 12] When setting movement magnitude of said 3rd lens group for zooming from a wide angle end to telephoto end to M3,
-6.0<M3/fw<-0.1
A zoom lens of a description in any 1 item of Claims 1-11 satisfying a becoming conditional expression.
[Claim 13] A zoom lens of a description in any 1 item of Claims 1-12, wherein the aforementioned rear group comprises an object side in order to the image side from the 4th lens group of negative refracting power, and the 5th lens group of positive refracting power.
[Claim 14] A zoom lens of a description in any 1 item of Claims 1-12, wherein the aforementioned rear group comprises the 4th lens group of positive refracting power.
[Claim 15] A zoom lens of a description in any 1 item of Claims 1-12, wherein the aforementioned rear group comprises an object side in order to the image side from the 4th lens group of positive refracting power, the 5th lens group of negative refracting power, and the 6th lens group of positive refracting power.
[Claim 16] A zoom lens of a description in any 1 item of Claims 1-12, wherein the aforementioned rear group comprises an object side in order to the image side from the 4th lens group of positive refracting power, and the 5th lens group of negative refracting power.
[Claim 17] An imaging device comprising:
A zoom lens of a description in any 1 item of Claims 1-16.
An optoelectric transducer which carries out light reception of the image formed by the zoom lens.

[via Egami]

Canon EOS M5 review (Photography Blog)

Canon Eos M5 Mark Ii Mirrorless
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Canon EOS M5: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA

At a glance:

  • 24.2MP APS-C CMOS Sensor
  • DIGIC 7 Image Processor
  • 2.36m-Dot EVF, Touch and Drag AF Control
  • 3.2″ 1.62m-Dot Tilting Touchscreen LCD
  • Full HD 1080p Video Recording at 60 fps
  • Built-In Wi-Fi with NFC, Bluetooth Smart
  • Dual Pixel CMOS AF
  • Up to 9 fps Shooting and ISO 25600
  • Digital IS 5-Axis Image Stabilization

Photography Blog posted their full Canon EOS M5 review.

From the conclusion:

Images directly from the EOS M5 are great, and it’s certainly on a par with other compact system cameras in those terms. However, while Canon has made excellent progress with its AF system for this camera, it can still be bested by others out there – the impact of which will vary greatly depending on the type of images you like to take […]

There’s a lot to like about the style and setup of the Canon EOS M5. Lots of dials and buttons make it easy to make changes, while the touch sensitive screen is responsive and useful in a variety of different scenarios. The viewfinder is great, if a little oversaturated, and the fact that you can continue to use the touchscreen to set autofocus point while you’re using it makes a lot of sense.

I can’t really agree with their opinion about the EOS M5’s auto-focus system. I tested the EOS M5 only for a few hours but I found AF to be snappy and on spot, even when using EF lenses through the adapter.

[via Photography Blog]

Canon patent for 3.6-255mm f/2.8-7 PowerShot lens with built-in extender

Powershot
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Interesting Canon patent for a 3.6-255mm f/2.8-7 lens for PowerShot cameras. The interesting fact: the lens has a built-in extender. With the extender, this lens becomes a 1000mm f/10 (35mm equivalent).

  • Patent publication number 2016-212210
    • Publication date 2016.12.15
    • Application date 2015.5.7
  • Example 1
    • Zoom ratio 66.07
    • Focal length 3.71 10.16 245.00
    • F number 2.90 4.99 7.07
    • Half angle of view (degree) 40.59 20.88 0.91
    • Lens total length 94.31 86.88 150.26
    • BF 9.45 16.24 9.56
    • Lens construction 11 groups 14 pieces
    • Aspheric surface 3 surfaces 2 pieces
    • UD 2
    • Super UD 1
  • Super telephoto (D)
    • Focal length 359.99
    • F number 10.39
    • Half angle of view (degree) 0.62
    • Lens total length 150.26
    • BF 3.56
    • Lens composition 13 groups 17 sheets
    • Aspheric surface 3 surfaces 2 pieces
    • UD 3
    • Super UD 1

Excerpt from the patent literature (note: machine translated):

[Claim(s)] [Claim 1] They are a main lens system which has a focus lens system which moves on the occasion of focusing, and an optical system which has a converter lens system which expands a focal distance of the whole system,
The aforementioned converter lens system is removable to space formed when the aforementioned focus lens system moves on the occasion of focusing,
When the aforementioned converter lens system has the lens part Gn of negative refracting power, and the lens part Gp of positive refracting power from the object side in order to the image side bordering on the widest air spacing in optical axis direction and a focal distance of fN and the aforementioned lens part Gp is set to fP for a focal distance of the aforementioned lens part Gn,
-9.3<fP/fN<-1.0
An optical system satisfying a becoming conditional expression.
[Claim 2] When [ of the aforementioned converter lens system ] setting a curvature radius of a lens surface on the object side to Rf and setting to Rr a curvature radius which is a lens surface on the image side most most,
2.0<(Rf+Rr)/(Rf-Rr)<100.0
The optical system according to claim 1 satisfying a becoming conditional expression.
[Claim 3] the aforementioned lens part Gn — most — a curvature radius of a lens surface on the image side — a time of setting a curvature radius of a lens surface on the object side to Rpf most of Rnr and the aforementioned lens part Gp,
-600.0<(Rnr+Rpf)/(Rnr-Rpf)<0.0
The optical system according to claim 1 or 2 satisfying a becoming conditional expression.
[Claim 4] An optical system of a description in any 1 item of Claims 1-3 characterized by comprising the following.
A positive lens of meniscus shape in which the aforementioned lens part Gn turned a concave surface to the image side in order from the object side at the object side.
Both lens surfaces comprise a cemented lens which joined a negative lens of concave shape, and, as for the aforementioned lens part Gp, the image side is a positive lens of a convex configuration.

[Claim 5] The aforementioned optical system is Sk about distance of the aforementioned converter lens system when it consists of zoom lenses and equips with the aforementioned converter lens system on an optic axis which it is most on an optic axis from a lens surface on the image side to the image surface. When [ of the aforementioned main lens system when the aforementioned main lens system is not equipped with the aforementioned converter lens system in telephoto end ] setting distance on an optic axis from a lens surface on the object side to the image surface to TD most,
0.005<Sk/TD<0.060
An optical system of a description in any 1 item of Claims 1-4 satisfying a becoming conditional expression.
[Claim 6] When [ of the aforementioned focus lens system / in / the aforementioned optical system consists of zoom lenses, and / telephoto end ] setting thickness on an optic axis of SSk and the aforementioned converter lens system to CTD for distance on an optic axis from a lens surface on the image side to the image surface most,
0.50<SSk/CTD<1.40
An optical system of a description in any 1 item of Claims 1-5 satisfying a becoming conditional expression.
[Claim 7] When setting thickness on an optic axis of M and the aforementioned converter lens system to CTD for movement magnitude of the aforementioned focus lens system when the aforementioned optical system consists of zoom lenses and it equips with the aforementioned converter lens system on an optic axis in telephoto end,
0.50<M/CTD<1.40
An optical system of a description in any 1 item of Claims 1-6 satisfying a becoming conditional expression.
[Claim 8] The aforementioned optical system is TD most about distance on an optic axis from a lens surface on the object side to the image surface, when it consists of zoom lenses and is not equipped with the aforementioned converter lens system on an optic axis in telephoto end. It is TD/TDA=1.0, when it equips with the aforementioned converter lens system on an optic axis and distance on an optic axis from a lens surface on the object side to the image surface is most set to TDA.
An optical system of a description in any 1 item of Claims 1-7 satisfying a becoming conditional expression.
[Claim 9] It is a zoom lens provided with a focus lens system which the aforementioned main lens system has a plurality of lens groups, and an interval of a lens group which is adjacent to on the occasion of zooming changes, and moves on the occasion of focusing,
An optical system of a description in any 1 item of Claims 1-8, wherein space formed when the aforementioned focus lens system moves in telephoto end is equipped with the aforementioned converter lens system.
[Claim 10] To order, the aforementioned main lens system is the 1st lens group of positive refracting power from the object side to the image side. The 2nd lens group of negative refracting power, the 3rd lens group of positive refracting power, the 4th lens group of negative refracting power, It is a zoom lens from which an interval of a lens group which comprises the 5th lens group of positive refracting power, and is adjacent to on the occasion of zooming changes, An optical system of a description in any 1 item of Claims 1-8, wherein space which said 5th lens group is the aforementioned focus lens system, and is formed when said 5th lens group moves in telephoto end is equipped with the aforementioned converter lens system.
[Claim 11] To order, the aforementioned main lens system is the 1st lens group of positive refracting power from the object side to the image side. The 2nd lens group of negative refracting power, the 3rd lens group of positive refracting power, the 4th lens group of negative refracting power, It comprises the 5th lens group of positive refracting power, and the 6th lens group of positive refracting power, It is a zoom lens from which an interval of a lens group which is adjacent to on the occasion of zooming changes, An optical system of a description in any 1 item of Claims 1-8, wherein space which said 5th lens group is the aforementioned focus lens system, and is formed when said 5th lens group moves in telephoto end is equipped with the aforementioned converter lens system.
[Claim 12] An imaging device having a solid state image pickup device which carries out light reception of the image formed by Claim 1 thru/or an optical system and the optical system of a description in any 1 item of Claim 11.

[via Egami]

Canon announce new PIXMA G-Series MegaTank printers with built-in refillable ink tank system

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Canon U.S.A. Launches First PIXMA Inkjet Printers with Built-In Refillable Ink Tank System

New PIXMA G-Series MegaTank Printers are Ideal for Users Seeking Convenient, Maintenance-Free Printing

MELVILLE, N.Y., December 27, 2016 – Canon U.S.A., Inc., a leader in digital imaging solutions, today announced the launch of the new PIXMA G-series MegaTank Printers; PIXMA G1200 MegaTank Single Function Printer, PIXMA G2200 MegaTank All-In-One Printer, PIXMA MegaTank G3200 Wireless1 All-In-One Printer and PIXMA G4200 MegaTank Wireless All-In-One Printer. This new line of printers is ideal for high-print volume printing environments within home offices, dorm rooms or anywhere a user needs a low-maintenance printer with enhanced connectivity and convenient, high-quality printing.

Each of the PIXMA G-series MegaTank printers feature a front-facing, built-in refillable ink tank system that makes it easy for users to monitor ink levels and refill when needed. Paired with the ink bottle’s spill-resistant tops, the system is designed to provide seamless and clean usability at home and in the office. This new hybrid integrated system of replenishing ink is cost-effective and offers higher page yield than the prior generation of PIXMA printers. The black ink provides up to 6,000 pages2 per bottle and the total color ink combination provides up to 7,000 pages2. The PIXMA G-series printers’ easy-to-use refillable ink bottles offer substantial ink capacity with 135 ml in the black bottle and 70 ml in each color ink bottle. Another value-added feature for the new PIXMA G-series printers is the initial quick installation set-up timeframe (for ink installation only) which is approximately six minutes3.

“Our PIXMA G-series printer models offer smart design inside and out,” said Yuichi Ishizuka, president and COO, Canon U.S.A., Inc. “Expanding the line of PIXMA printers with the added benefit of a built-in refillable ink tank system highlights Canon’s commitment to continuing to enhance the printing experience in businesses and in the home with genuine Canon print reliability.”

Click here to open the rest of the article

B&H Photo DealZone’s best deals are live again (for 48 hours)

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B&H Photo’s best deals in the daily changing DealZone section have been put online again, all together and just for 48 hours.

  • B&H DealZone’s greatest hits for All Categories
  • B&H DealZone’s greatest hits for Photography
  • B&H DealZone’s greatest hits for Video
  • B&H DealZone’s greatest hits for Computers
  • B&H DealZone’s greatest hits for Mobile
  • B&H DealZone’s greatest hits for Audio

These Canon products will be announced next [CW4]

Rebel T6i
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A list of certification information for Canon products leaked at Nokishita Camera. Pretty safe to assume that these are the products Canon is set to announce soon, likely before CP+ in January.

Please note that the DSLRs listed at the top are the replacements for the Rebel T6s and Rebel T6i. The mirrorless camera is likely the one rumored a few days ago. The other items in the list are PowerShot cameras, of which the PowerShot G9 X Mark II was already expected.

Single-lens reflex camera

  • DS126631
    • Wireless modules: ES202 (Wi-Fi) · WM500 (Bluetooth)
  • DS 126651
    • Wireless modules: ES200 (Wi-Fi · FCC documents ) · WM500
  • DS126661
    • Wireless modules: ES200 ( FCC documents ) · WM500
  • DS126671
    • Wireless modules: ES200 ( FCC documents ) · WM500

Mirrorless camera

  • PC2279
    • Wireless module: WM227 (Wi-Fi) · WM500
    • Color: 2 colors

Compact camera

  • PC 2323 / PC 2325
    • PowerShot G9 X Mark II
    • Wireless module: WM227 · WM500
    • Color: 2 colors
    • made in Japan
  • PC 2329
    • Wireless modules: ES200 ( FCC documents ) · WM500
    • made in Japan
  • PC 2332
    • Wireless modules: ES200
    • Color: 3 colors
    • made in China
  • PC 2333
    • IXY 200 / IXUS 185 / PowerShot ELPH 185
    • Color: 3 colors
    • made in China
  • PC 2334 / PC 2335
    • Wireless modules: ES200
    • Color: 2 colors
[via Nokishita Camera]