Canon Patent: 35mm And 45mm f/2.8 For Full Frame, And 35mm f/2.8 For APS-C

Canon Patent

A new Canon patent for more RF mount lenses: 35mm and 45mm f/2.8 for full frame imaging sensors, and a 35mm f/2.8 for APS-C sensors.

Canon patent application P2022163979 (Japan, published 10/27/2022) discusses optical formulas for the following lenses for the RF mount:

  • 35mm f/2.8 (for full frame)
  • 45mm f/2.8 (for full frame)
  • 35mm f/2.8 (for APS-C)

From the patent literature:

A compact and lightweight optical system having high optical performance is provided by appropriately setting the refractive index and power arrangement of each lens.

Description of the Related Art

In recent years, imaging devices have been miniaturized, and the number of pixels of imaging elements used in the imaging devices has increased.

Description of the Related Art

As image pickup devices become smaller and have more pixels, optical systems used in image pickup apparatuses are required to have high optical performance, and to be compact and lightweight.

Example 1

  • Focal Length: 33.13
  • F-value: 2.91
  • Half angle of view: 33.15
  • Image height: 21.64
  • Overall length: 41.51
  • Back focus: 11.50

Example 2

  • Focal length: 34.76
  • F-value: 2.80
  • Half angle of view: 21.45
  • Image height: 13.66
  • Overall length: 40.98
  • Back focus: 13.10

Example 3 

  • Focal length: 46.55
  • F-value: 2.80
  • Half angle of view: 24.93
  • Image height: 21.64
  • Overall length: 53.50
  • Back focus: 14.80

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

[via asobinet]

Tamron SP 45mm f/1.8 Deal – $399 (reg. $599, limited time)

Tamron SP 45mm F/1.8 Deal

Adorama has an excellent Tamron SP 45mm f/1.8 deal.

Get the Tamron SP 45mm f/1.8 Di VC USD lens for Canon EF mount at $399. Compare at $599. Free shipping and limited time offer.

Tamron SP 45mm f/1.8 deal key features and description:

  • EBAND Coating deployed to thoroughly suppress ghosting and flare
  • Fluorine coating on the front element repels water and fingerprints
  • Circular aperture for enhanced bokeh
  • Lens Mount: Canon EOS
  • Zoom Focal Length: All Primes Lens
  • Fixed Focal Length: 45mm Lens
  • Lens Format: Full Frame
  • Maximum Aperture: f/1.8
  • Lens Type: Wide Angle SLR Lens
  • Image Stabilization Type: Yes (VC)
  • Series: Tamron Di Series
  • Special Features: Aspherical
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Lensbaby Sol 45 lens announced (tilt-shift on a budget)

Lensbaby Sol 45

Lensbaby Sol 45 at a glance:

  • Canon EF-Mount Lens
  • Metal Body with Tilt from 0-8.5°
  • Fixed f/3.5 Aperture
  • Manual Focus
  • Minimum Focus Distance: 14″
  • Filter Diameter: 46mm
  • 2-Blade, Adjustable Diaphragm

Lensbaby released a new lens made for creative minds on a budget (it’s $199.95), the Lensbaby Sol 45. With an 8.5° of tilt, the Lensbaby Sol 45 lets you easily isolate a subject within the frame and surround it in blur and smooth bokeh. The Lensbaby Sol 45 can be ordered at B&H Photo or directly on Lensbaby’s site.

Photography Blog has a review, DPReview a sample gallery.

Press release (via Photography Blog):

Lensbaby Inspires New Audiences With the Fun and Accessible Sol 45

A tool to inspire. A tool to be bold. A tool to build memories.

Portland, OR (August 7th) – Lensbaby—makers of award-winning creative effects lenses, optics and accessories—announces the launch of their most playful and accessible lens yet, the Sol 45.

“Sol 45 opens up a new creative experience for those who want to dip their toes in the Lensbaby pool,” said Craig Strong Lensbaby Co-Founder and CCO. “Sol inspires visual artists to find new and fun ways to see their world by creating unique images in camera – no filters needed.”

The Sol 45 responds to those curious and insightful individuals who desire intention, imagination, and passion within each experience they live. This fixed aperture lens features an ease-of-use that injects the classic Lensbaby energy into images while creating a fun photography experience that benefits from the creation of unique photos that are representative of the users’ passions.

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New Canon TS-E 45mm, 90mm and 135mm tilt-shift lenses coming August 2017? [CW3]

Canon TS-E 90mm F/2.8

Rumor has it Canon may announce three new tilt-shift lenses at the end of August 2017. One of the new lenses might also have macro capabilities.

The rumored lenses are:

  • Canon TS-E 45mm f/2.8L
  • Canon TS-E 90mm f/2.8L
  • Canon TS-E 135mm f/2.8L Macro

Another lens is rumored since a while and said to be also announed at the end of August 2017, the Canon EF 85mm f/1.4L IS.

So far no specs nor pictures of the new lenses have leaked. If the rumored August announcement is to be taken seriously then specification and product pictures will soon leak on Japanese sites.

Stay tuned.

Tamron SP 45mm f1.8 VC review (very sharp images, Camera Labs)

Tamron 45mm

Camera Labs reviewed the new, image-stabilised Tamron SP 45mm f1.8 Di VC USD. This is a pretty interesting prime lens that comes with an affordable price tag ($599) and promises to deliver bang for the bucks. From the conclusion (emphasis mine)

The new Tamron 45/1.8 VC is a very versatile and interesting lens: It offers a fast f/1.8 aperture combined with image-stabilization that is good for two stops in my tests. Both allow the lens to hold out longer in dimly lit situations. It produces very sharp images with very little coma right into the corner of a full-frame sensor. And it’s relatively small and light. But it does not produce the same Bokeh as a 50/1.4 or 55/1.4 lens and it has color aberrations which show up although not as prominent as with Tamron’s 35/1.8 VC. But with a sharpness / resolution that it is better than any other lens in this comparison apart from the Zeiss Otus the Tamron 45/1.8 VC clearly earns a Highly Recommended. Regarding this performance the price of the new Tamron seems OK. And I’m really looking forward for Tamron to design a 85mm f1.8 VC lens! Read the review…

Tamron SP 45mm f/1.8 Di VC USD Amazon Adorama B&H Photo – for sample pics click here. Key features:

  • Canon EF Mount/Full-Frame Format
  • Aperture Range: f/1.8 to f/16
  • One LD Element, Two Aspherical Elements
  • eBAND and BBAR Coatings
  • Fluorine Coating on Front Element
  • USD AF Motor, Full-Time Manual Focus
  • VC Image Stabilization
  • Rounded 9-Blade Diaphragm
  • Moisture-Resistant Construction
  • Includes SILKYPIX Developer Studio

Canon Dual Pixel AF with Tamron SP 35mm and SP 45mm f/1.8 primes (both shipping)

Short video by Dustin Abbott showing Canon’s Dual Pixel CMOS AF used on the new Tamron SP 35mm f/1.8 VC and Tamron SP 45mm f/1.8 VC. It’s not as silent as Canon’s STM lenses, but for the rest it seems to work good and smooth. Dustin Abbott also posted an exhaustive video review of both lenses. Dual Pixel CMOS Auto-Focus is featured on the EOS 7D Mark II and Canon EOS 70D, and on Canon’s Cinema cameras. Tamron’s new primes captured a lot of attention since they were announced. For a good reason. The SP 35mm f/1.8 Di VC USD and the SP 45mm f/1.8 Di VC USD are affordable, and have weather sealing and image stabilisation. That’s a lot of bang for $599. Both lenses are now shipping.