Canon Patent for 70-300mm f/4-5.6 Lens

Canon Patent

Egami (translated) spotted another patent filed by Canon.

The patent refers to a 70-300mm f/4-5.6 lens. As Egami notes, it’s a bit early for a replacement of the EF 70-300mm F4-5.6L IS.

Patent description (machine translated):

  • Patent Publication No. 2014-186098
    • Published 2014.10.2
    • Filing date 2013.3.22
  • Example 4
    • Zoom ratio 4.02
    • Focal length f = 72.20-135.09-289.98mm
    • Fno. 4.19-4.63-5.86
    • Half angle ω = 16.68-9.10-4.27 °
    • Image height Y = 21.64mm
    • Overall length of the lens 183.25-214.28-237.12mm
    • BF 43.12-49.21-66.05mm

Canon Patent

Canon EF 100-400mm f/4.5-5.6L IS II Sample Pics

ISO 320, f/5, 1/2000, full size

First sample pics shot with the new EF 100-400mm f/4.5-5.6L IS II lens showed up on Canon China’s website. All samples were shot using an EOS-1D X. Canon’s new EF 100-400mm f/4.5-5.6L IS II lens sells for $2,199 (pre-order: Adorama and B&H Photo).

If you want to learn more about the EF 100-400mm f/4.5-5.6L IS II lens, there are two CPN articles for you.

ISO 100, f/5, 1/320s, full size

EF 100-400mm f/4.5-5.6L IS II

ISO 400, f/11, 1/400, full size

ISO 200, f/16, 1/125, full size

ISO 800, f/11, 1/1250, full size

ISO 800, f/8, 1/5, full size

Announcement Soon: Canon EF 11-24mm f/4L Lens (Update)

EF 11-24mm f/4L
The image of the 11-24mm that leaked some time ago.

I have been told by a good source (thanks) that Canon will soon announce the EF 11-24mm f/4L lens. The announcement may be a matter of a week or two. Price is said to be around $3,000.

An image of the new ultra-wide angle zoom lens showed up time ago. All agree that the image (above) is not a fake. Moreover, there is also a patent for such a lens.

Update (thanks Paul): Canon Germany’s site has leaked the 11-24mm lens, though the link does lead to a “page not found”. In the image below you see a screenshot of the page. The 11-24mm is mentioned where the image is missing. The text says:

The EF11-24mm 1:4L USM is the widest ultra-wide angle lens for Canon full-frame cameras. It features a completely new design, new lens coating and outstanding performance.

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Stay tuned…

Canon Pro Network Articles About new Canon EF 100-400mm f/4.5-5.6L IS II

20141110_thumbL_ef100400_side

Canon Professional Network posted 2 articles about Canon’s new EF 100-400mm f/4.5-5.6L IS II lens ($2,199, pre-order: Adorama and B&H Photo.).

The first article is titled Getting closer to nature with the new EF100-400mm superzoom. Wildlife photographer and Canon Explorer Danny Green shares his thoughts and experience with the new EF 100-400mm f/4.5-5.6L IS II.

The 100-400mm lens is probably the most important piece of glass anyone interested in wildlife photography needs to have if they are to take their photography seriously, and Canon has taken the original and much loved 100-400mm and brought it bang up to date with some fantastic new features

The other article is a technical introduction to the EF 100-400mm f/4.5-5.6L IS II lens.

The new Air Sphere Coating has been developed by Canon to minimise reflections and flare. It consists of tiny nano particles of air trapped in a film above the conventional multi-layer coatings. These Air Sphere particles form a super low reflective coating on the surface of the lens element to reduce reflection and act as a ‘crash mat’ to reduce the speed that light travels through the layer so there is not such a large change in speed when the light enters through the glass of the lens element. The major cause of reflections is the sudden change in the speed of light as it passes from air to glass, and this new technology prevents the cause of visible ghosting and flare.