Canon EF 600mm f/4 DO IS may come late 2017, several patents exist [CW3]

ef 600mm f/4

Do you remember the prototype 600mm f/4 lens shown at Canon Expo 2015? Well, guess it was just a matter of time before a pertinent rumor surfaced.

A new Canon EF 600mm f/4 DO IS lens is said to be announced in late 2017. Indeed, there are several patents pointing to such a lens, both for a 600mm f/4 and 600mm f/5.6 and with some patents dating back to 2012 (1 | 2 | 3 | 4 | 5).

Given the amount of patents pointing to a 600mm optical formula, I guess it is a safe assumption that Canon is actively working on such a lens and that we will see it, sooner or later. While I am pretty sure Canon is working on a EF 600mm f/4 DO IS lens, I am sceptical about the announcement date since rumored dates for Canon’s big white “L” lenses rarely happened to be right.

The prototype EF 600mm f/4 DO lens (pic above and below) shown at Canon Expo 2015 features Blue Spectrum Refractive Optics, a technology Canon announced in August 2015. BR corrects chromatic aberrations. The technology was first seen on the Canon EF 35mm f/1.4L II.

The rumor adds some more juice, suggesting that

Canon is well on its way developing updates for the other “big white” prime lenses. While optics will likely be similar, Canon is working on weight savings techniques and updated coatings and IS systems. We don’t expect to see these lenses announced in 2017, although we’re told it’s possible we may see them being tested at the 2018 Olympics in South Korea.

Pinch of salt needed here.

ef 600mm f/4

A Bit of Everything (M5, EF 600mm, 5D4, 4K, Milvus 100mm, etc)

Above: Canon EF 600mm F/4 IS review – the daniel life


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Canon patent for EF-M 600mm f / 5.6 DO IS lens

EF-M 600mm f / 5.6 DO IS

Canon filed a patent for a EF-M 600mm f / 5.6 DO IS, a lens with diffractive optics for the EOS M system.

  • Patent Publication No. 2015-215437
    • Published 2015.12.3
    • Filing date 2014.5.9
  • Example
    • Focal length 585.00
    • F-number 5.74
    • Half angle (in degrees) 1.34
    • Image height 13.66
    • Overall length of the lens 299.25
[via Egami]

Canon EF 600mm f/4 BR DO prototype shown at Canon Expo 2015

Canon EF 600mm F/4 BR DO Prototype Shown At Canon Expo 2015

Canon prototype gear on show at Canon Expo 2015 in NYC. After having posted a picture of the 120MP DSLR prototype, Popular Photography Magazine posted another picture. The EF 600mm BR DO is on display, a “semi-working version”. A patent for such a lens showed up back in July.

The BR stays for Blue Spectrum Refractive Optics, a technology Canon announced in August. BR corrects chromatic aberrations. The technology will be seen first on the Canon EF 35mm f/1.4L II.

The image below shows how the lens will look when finalised.

canon 60mm BR DO

Canon Patent For 600mm f/4 Lens

Canon Patent

Egami (translated) spotted a patent filed by Canon for a new 600mm f/4 lens. Egami suggests the lens will be ready for Tokyo Olympic Games in 2020 and the Rio de Janeiro Olympic Games in 2016.

  • Patent Publication No. 2014-26210
    • Publication date 2014.2.6
    • Filing date 2012.7.30
  • Example 1
    • Focal length f = 588mm
    • Fno. 4.12
    • Angle of view 2ω = 4.22 °
    • BF 56.0mm
    • Total lens length 374.7mm
    • Inner focus
  • Example 5
    • Focal length f = 588mm
    • Fno. 4.12
    • Angle of view 2ω = 4.22 °
    • BF 55.0mm
    • Total lens length 343.5mm
    • Inner focus
    • Diffraction optical element
  • Effect of the glass material
    • Fluorite (Fluorite)
      • In the long lens fluorite + total length, correction of chromatic aberration is easy
      • In short lens fluorite + total length, correction of chromatic aberration is difficult
    • Diffractive optical element (DOE)
      • Diffractive optical element can be corrected if the chromatic aberration
      • Flare caused by light diffraction

Canon EF 600mm f/4L IS II USM Lens In Stock

Canon EF 600mm f/4L IS II USM Lens In Stock

B&H has the Canon’s EF 600mm f/4L IS II USM Telephoto lens in stock and ready to ship for $12,999 (click here). Limited quantity.

Product description:

Canon’s EF 600mm f/4L IS II USM Telephoto Lens has all the upgrades needed to make it the go-to super long telephoto lens for professional photographers and anyone who has the highest standards for the gear they use.

First and foremost, image sharpness is enhanced with fluorite optics that deliver reduced chromatic aberration. The lighter weight (3 lbs lighter due to magnesium and titanium construction elements) is always welcome in very large telephoto lenses. Using 3 IS (Image Stabilization) modes allows you to shoot at shutter speeds 4 stops slower, and the advanced third IS mode activates only when the shutter button is fully pressed, so you can pan with fast-moving subjects without the IS function interfering with composition and framing.

Dust and water sealing keeps the lens functioning even in less than ideal conditions, and a Power Focus mode allows smooth focus change while shooting video.

Fluorite optics for sharper images and less chromatic aberration.

Lighter weight due to magnesium and titanium construction elements.

Three IS (Image Stabilization) modes offer a 4-stop shutter speed advantage.

Advanced image stabilization Mode 3 activates only when shutter button is fully pressed, allowing for panning to follow fast-moving subjects.

Inner focusing system with focusing cam

Power Focus mode allows smooth focus change when shooting video.

Dust and water sealing for shooting in the most challenging environments.

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