Today Only: Sigma 18-35mm f/1.8 DC HSM Art Lens (Canon EF) – $549 (reg. $799)

Sigma 18-35mm f/1.8 deal Art DC ART

Only for today (12/16/2022) B&H Photo has a solid $250 discount on the excellent Sigma 18-35mm f/1.8 DC HSM Art Lens for Canon EF mounts.

At a glance:

  • EF-Mount Lens/APS-C Format
  • 28.8-56mm (35mm Equivalent)
  • Aperture Range: f/1.8 to f/16
  • Five SLD Elements
  • Four Aspherical Elements
  • Super Multi-Layer Coating
  • Hyper Sonic Motor AF System
  • Rounded 9-Blade Diaphragm

Get the Sigma 18-35mm f/1.8 DC HSM Art Lens for Canon EF mounts on sale at $549. Compare at $799. I own this lens and I love it.

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Canon Patent: 200-400mm F4 x 1.4 & 200-500mm F4 x 1.4 Lenses For RF Mount

Canon patent

A new Canon patent application for two RF-mount telephoto lenses with extender: 200-400mm F4 x 1.4 and 200-500mm F4 x 1.4.

Canon patent application P2022185663 (Japan, published 12/15/2022) discusses optical formulas for two RF-mount telephoto lenses with 1.4 extender, the RF 200-400mm F4 x 1.4 and RF 200-500mm F4 x 1.4.

From the patent literature:

Kind Code: A1 To provide a compact, high-performance zoom lens into which an extender group can be inserted.

BACKGROUND ART

Patent Document 1 and Patent Document 2 disclose an optical system (telephoto lens) in which a magnification conversion optical group (extender group) for extending the focal length on the telephoto end side can be inserted and removed.

In the optical systems disclosed in Patent Documents 1 and 2, an extender is provided on the image side of the stop for the purpose of downsizing. In this case, since it is necessary to secure a wide interval between the lens groups on the image side of the diaphragm, it is necessary to arrange the focus lens group on the object side of the diaphragm. If the focus lens group is arranged on the object side of the diaphragm, the diameter of the focus lens group is determined by the diameter of the Fno light beam at the telephoto end.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide a small-sized, high-performance zoom lens and an imaging device into which an extender group can be inserted.

Example 1

  • Focal length: 205.1-385.5
  • F-value: 4.1
  • Half angle of view: 5.99-3.21
  • Image height: 21.635
  • Total length: 367.62
  • Back focus: 39.994

Example 2

  • Focal length: 290.4-543.2
  • F-value: 5.8
  • Half angle of view: 4.26-2.28
  • Image height: 21.635
  • Total length: 367.62
  • Back focus: 39.994

Example 3

  • Focal length: 207.0-487.9
  • F-value: 4.1
  • Half angle of view: 5.97-2.54
  • Image height: 21.635
  • Overall length: 410.05
  • Back focus: 39.998

Example 4

  • Focal Length: 288.1-678.9
  • F-value: 5.7
  • Half angle of view: 4.30-1.83
  • Image height: 21.635
  • Overall length: 410.05
  • Back focus: 39.998

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

[via asobinet]

New Canon Sensor: 19MP For Fast Moving Subjects, No Rolling Shutter

rolling shutter

Canon announced the development of a new imaging sensor. The new sensor has 19MP and is suited for fast moving objects since it has no rolling shutter effect.

Canon will release the LI5030SAC (color) , the LI5030SAM (monochrome), the LI5030SAI (color/near-infrared) and the LI5030SAN (no microlens nor color filter) image sensors as new products in late January 2023.

Canon press release (machine translated):

Released approximately 19-megapixel CMOS sensor that captures fast-moving subjects without distortionSuitable for industrial and surveillance applications requiring high sensitivity, high image quality, and high speed

In recent years, due to the promotion of digital transformation (DX) in various industries and the growing social interest in safety and security, the demand for industrial cameras and network cameras has increased. We sought. The new product is equipped with a global shutter function and achieves high-speed imaging performance of approximately 58 fps with a high pixel count of approximately 19 million pixels in a 35mm full-frame. It meets a wide range of needs, such as day and night monitoring in harbors and railways, observation of microstructures with a microscope, and industrial applications such as inspection of parts in factories.

Main features

In addition to the global shutter function, it achieves approximately 19 million pixels and high-speed imaging performance of approximately 58 fps.

The new product is equipped with a global shutter function that enables accurate imaging of the subject without distortion, even when the subject or the camera itself is moving at high speed. In addition, the number of effective pixels is approximately 19 million (5,688 x 3,334), which is approximately 2.3 times that of 4K, enabling wide-field and high-resolution imaging. In addition, in order to address the issue of the frame rate dropping as the number of pixels increases, it takes time to read out. High-speed reading is possible.

Realizes high sensitivity and high image quality with a pixel size of 6.4 μm

The pixel size is as large as 6.4 μm on a side *1 , which makes it possible to use light efficiently and achieve high sensitivity. increase. Furthermore, by suppressing noise using sensor technology that Canon has cultivated over many years as a leading imaging company, it achieves a wide dynamic range, enabling high-quality imaging even in environments with large differences in brightness, such as entrances to buildings.

Lineup for various industrial applications

In addition to the color “LI5030SAC” and monochrome “LI5030SAM”, the “LI5030SAI” for traffic surveillance cameras and industrial cameras that can simultaneously capture visible light and near-infrared regions can meet a wide range of industrial needs. , will release the LI5030SAN, which does not have a microlens or color filter and can be used in electron microscopes and X-ray detection cameras.

Canon’s sensor, which has the same performance as the LI5030SAN, is installed in JEOL Ltd.’s electron microscope CMOS camera SightSKY (EM-04500SKY).

Today Only: Lensbaby Composer Pro with Sweet 80 Optic – $199.95 (EF & RF, reg. $379.95)

Lensbaby

Only for today (12/15/2022) B&H Photo has $180 discount on the Lensbaby Composer Pro with Sweet 80 Optic, for Canon EF and Canon RF mounts.

At a glance:

  • RF/EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.8 to f/22
  • Lensbaby Optic Swap System
  • Tiltable Design
  • Produces Sweet Spot of Focus
  • 12-Blade Diaphragm

Get the Lensbaby Composer Pro with Sweet 80 Optic on sale at $199.95. Compare at $$379.95):

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Lens Firmware Update: Focus Breathing Correction For A Bunch Of RF Lenses

RF lenses

Canon released firmware updates for a bunch of RF lenses.

Focus breathing correction is brought to the following lenses (click to get the firmware update):

Stay tuned…

Three New Wide Angle L-tier RF-mount Prime Lenses Coming First Half 2023?

canon rumors canon news eos r7 mark ii canon eos rv

A new Canon rumor concerning RF-mount lenses. Three of them, all primes.

Latest murmuring has it that Canon might release three wide angle “L” lenses for the RF-mount. Says the source of the rumor (emphasis mine):

[…] Canon actually plans to launch 3 wide angle L prime lenses from the RF mount in the first half of 2023. One of the lenses will be the RF 35mm f/1.2L (or f/1.4) and an RF 24mm f/1.4L USM. The third lens is unknown at this time, though [it might be] an L 28mm prime lens

The RF 35mm f/1.2L is rumored since a long time. No surprise since it is a lens Canon will release for sure, sooner or later. All three lenses will for sure be announced sooner or later. Maybe it will happen in the first half of 2023.

Stay tuned.

Source: Canon Rumors