Canon Patent: 15mm F4.5 And 10mm F3.5 For APS-C Mirrorless

Canon Patent

And here is one more Canon patent. Canon patent application 2024006604 (Japan, published 01/17/2024) discusses optical formulas for two wide prime lenses for mirrorless cameras with an APS-C imaging sensor.

  • 15mm F4.5
  • 10mm F3.5

From the patent literature:

  • An object of the present invention is to provide an optical system that can reduce the occurrence of ghosts while having high optical performance.
  • BACKGROUND ART: Wide-angle lenses are widely used for landscape photography, astronomical photography, and the like. Wide-angle lenses are required to have a wide angle of view and high optical performance.
  • Patent Document 1 discloses an optical system that has a wide angle of view and improved optical performance by employing a plurality of negative lenses on the object side to gently bend off-axis rays. ing.

Example 1

  • Focal length: 15.45
  • F value: 4.60
  • Half angle of view: 49.36
  • Image height: 18.00
  • Total length: 115.26
  • Back focus: 13.50

Example 2

  • Focal length: 9.97
  • F value: 3.50
  • Half angle of view: 49.63
  • Image height: 11.72
  • Total length: 72.73
  • Back focus: 10.06

Example 3

  • Focal length: 16.00
  • F value: 4.60
  • Half angle of view: 48.58
  • Image height: 18.14
  • Total length: 99.94
  • Back focus: 13.04

All featured Canon patents are listed here.

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Today Only: IRIX 15mm f/2.4 Blackstone Lens (Canon EF) – $419 (reg. $599)

IRIX 15mm F/2.4

Only for today (12/5/2022) B&H Photo has a $180 discount on the IRIX 15mm f/2.4 Blackstone Lens for Canon EF mount.

At a glance:

  • Canon EF-Mount/Full-Frame Format
  • Aperture Range: f/2.4 to f/22
  • Two Aspherical Elements
  • Two ED and Three HR Elements
  • Neutrino Coating
  • Manual Focus Design with Focus Lock
  • UV Fluorescent Engraved Markings
  • Depth of Field and Focus Distance Scales
  • Weather-Sealed Magnesium Alloy Housing
  • Rounded Nine-Blade Diaphragm

Get the IRIX 15mm f/2.4 Blackstone Lens for Canon EF mount on sale at $419. Compare at $599.

More selected deals:

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Laowa 15mm f/2 Zero-D For Canon EOS R Announced

Laowa 15mm F/2 Zero-D

Venus Optics announced the Laowa 15mm f/2 Zero-D lens for Canon EOS R systems (and others).

The Laowa 15mm f/2 Zero-D can be preordered at Adorama for $849.

Product description:

The ultra wide, fast & compact prime for your full frame mirrorless cameras (Sony FE / Canon RF / Nikon Z).

This lens is currently the fastest in its class, offering superior optical quality for full-frame mirrorless cameras. It features close-to-zero distortion with a 110° angle of view. The ultra-fast f/2 aperture enables photographers to capture impressive astro shots very easily. The 72mm filter thread allows quick attachment of filters for creating unique and inspiring landscapes. This lens can easily become an everyday lens for most shooters, given its compact size (82 mm/3.23 in. long) and weight (only 500 g/1.1 lb.).

Full-size sample images can be found in our Flickr gallery here.

The Laowa 15mm f/2 Zero-D is currently the widest f/2 rectilinear lens in the market with a native E mount (it does not require additional adapters). It is an ultra-wide & ultra-fast prime lens which covers both 35mm full-frame & APS-C sensors. The extreme 110° angle of view and ultra-fast f/2 aperture allow photographers to create impressive astro-photography shots with ease. It also gives photographers a fast wide angle option for landscape and low-light photography.

The Laowa 15mm f/2 Zero-D is the second member of the Close-to-Zero distortion series from Venus Optics, following the launch of the Laowa 12mm f/2.8 Zero-D last year. Zero-D lenses are specially designed to remove the optical distortion commonly associated with wide angle lenses. Any straight lines will be retained.

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Irix Blackstone 15mm f/2.4 sample pictures gallery

Irix Blackstone 15mm F/2.4

Irix Blackstone 15mm f/2.4 at a glance:

  • Canon EF-Mount/Full-Frame Format
  • Aperture Range: f/2.4 to f/22
  • Two Aspherical Elements
  • Two ED and Three HR Elements
  • Neutrino Coating
  • Manual Focus Design with Focus Lock
  • UV Fluorescent Engraved Markings
  • Depth of Field and Focus Distance Scales
  • Weather-Sealed Magnesium Alloy Housing
  • Rounded Nine-Blade Diaphragm

While working on his final review, Dustin Abbott posted a set of sample photos shot with the Irix Blackstone 15mm f/2.4 lens, and a video (below) where he tells his first look impression of the Irix lens. The Irix Blackstone 15mm f/2.4 is a high quality manual focus lens that sells at $675.

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Irix Blackstone 15mm f/2.4: B&H Photo | Adorama | Amazon

Irix wide angle lenses now available at Adorama

Irix 15mm F/2.4

Adorama has the new Irix wide angle lenses in stock and ready to ship.

  • IRIX 15mm f/2.4 Firefly Manual Focus Lens $399.95 with free shipping
  • IRIX 15mm f/2.4 Blackstone Manual Focus Lens $599.95 with free shipping
  • IRIX 11mm f/4.0 Firefly Manual Focus Lens $575 with free shipping
  • IRIX 11mm f/4.0 Blackstone Manual Focus Lens $774.95 with free shipping

The “Blackstone” edition of the two Irix lenses have a premium finish and an aluminium-magnesium alloy, though the build quality of the “Firefly” is anything but cheap.

Irix 11mm
Irix 11mm f/2.4 Blackstone
Videos about the IRIX 15mm f/2.4 and the weather sealing of the Blackstone version after the break.
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