Sigma patent for 400mm f/2.8 OS Sport Lens

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Egami (translated) spotted an interesting patent filed by Sigma. It refers to a 400mm f/2.8, image-stabilized lens. This lens will be part of Sigma’s “Sport” line-up.

  • Patent Publication No. 2015-64436
    • Published 2015.4.9
    • Filing date 2013.9.4
  • Example 1
    • Focal length 390.00mm
    • Fno. 2.91
    • Total angle of view 2ω 6.29 °
    • Image height Y 21.63mm
    • Overall length of the lens 353.00mm
    • Positive, positive positive and negative negative 5-group configuration
    • Inner Focus (fourth group)
    • Anti-vibration (part of the fifth group)

Canon 400mm f/4 DO IS II Review (Imaging Resource)

Canon EF 400mm f/4L IS DO II

SLRGear posted their review of Canon’s new 400mm f/4 DO IS II lens, announced last September for Photokina.

Some excerpts from the review:

  • On a full-frame body, the Canon 400mm DO II is sharp, though not as tack sharp as the 400mm ƒ/2.8 II
  • As one would hope from a nearly-$7000 lens, chromatic aberration is very minimal. On both full- and sub-frame cameras, CA was very low
  • […] vignetting on this telephoto lens is very, very low.
  • […] geometric distortion on the Canon 400mm DO II is practically nonexistent
  • […] this large lens is, as they say, “built like a tank”. The build quality is simply impressive […]

From the conclusion:

The Canon EF 400mm ƒ/4 DO IS II USM is a fantastic, professional-level supertelephoto lens. As a significant upgrade optically compared to the original version, the 400mm DO II is an even more attractive option over the heavy, expensive 400mm ƒ/2.8L IS II. For professional and serious wildlife, sports and action photographers who don’t want or need a fast, low-light-friendly ƒ/2.8 supertelephoto prime, the 400mm DO II version offers healthy savings in both cost and weight. Image quality is very good, and the built-in I.S is extremely impressive

The review comes with charts and sample pics.

The Canon 400mm f/4 DO IS II lens is not a budget lens. It sells for around $7000 (B&H Photo | Adorama).

Specs:

  • EF Mount Lens/Full-Frame Format
  • Gapless Dual-Layer Diffractive Optics
  • Large Diameter Aspherical Element
  • Ultra Low Dispersion Element
  • Protective Fluorine Coatings
  • Ultrasonic AF Motor and Internal Focus
  • Optical Image Stabilizer with 3 Modes
  • Power Focus Mode; Full-Time MF Override
  • Dust- and Water-Resistant Construction
  • Rounded 9-Blade Diaphragm
[via SLRGear ]

Canon 400mm f/4 DO IS II Amazon, B&H, Adorama, Canon USA, Digitalrev, eBay

IMG_424278

Canon Ambassador Richard Walch about EOS 7D Mark II And EF 400mm f/4 DO IS II

FotoTV on Youtube published an interview with Canon Ambassador Richard Walch about the new EOS 7D Mark II and the likewise new EF 400mm f/4 DO IS II lens.

The EOS 7D Mark II is available for pre-order. In Germany Wex Photographie is accepting pre-orders for the EOS 7D Mark II (€1,699). The new EOS 7D Mark II can be pre-ordered also in the USA. Shipment is expected for November 2014 and orders will be shipped on a first come first serve basis:

7d2_king

World-wide pre-order links after the break.

Read more...

More Image and Specs Leak: Canon EF 24-105mm IS STM and EF 400mm f/4 DO IS II Lenses

 

After the EOS 7D Mark II, another leak is coming from digicame-info. Images and specs of the EF 24-105 f/3.5-5.6 IS STM and EF 400mm f/4 DO IS II lenses surfaced.

I expect Canon to announce the new products either tomorrow or monday. Stay tuned…

EF 24-105mm IS STM
Canon EF 24-105 f/3.5-5.6 IS STM:

– One UD lens and two glass mold aspherical lens
– AF drivent by stepping motor
– Full-time manual focus
– 4 stops IS
– Maximum magnification is 0.3x
– New kit lens for the EOS 6D

EF 24-105mm IS STM
Canon EF 400mm f/4 DO IS II:

– Total length 232.7 mm
– Weight is 2100 g
– Third generation  DO lens
– One large-diameter UD lens
– One large-diameter aspherical lens grinding
– 4 stop IS
– Special coating SWC
– Dust and water resistant

[via digicame-info]

Canon Set To Announce New Lenses Very Soon (EF-S 24mm f/2.8 STM, EF 24-105mm F3.5-5.6 IS STM, EF 400mm F4 DO IS II USM)

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Canon EF 400mm f/4 DO IS

Digicame (translated) posted what I am not shy to define as the first reliable rumor on what Canon is going to announce at Photokina 2014. Yes, these lenses are going to be announced at Photokina 2014!

  • EF-S 24mm f/2.8 STM
  • EF 24-105mm f/3.5-5.6 IS STM
  • EF 400mm f/4 DO IS II USM

The EF-S 24mm f/2.8 STM was previously rumored to be an EF lens, instead it is an EF-S lens. Not yet sure if it will be a pancake lens.

The EF 24-105mm f/3.5-5.6 IS STM is aimed at full-frame shooters, who will soon enjoy the benefits of the STM technology for their video shooting. This lens will probably be the next kit lens for the 6D. It will for sure be cheaper than an “L” grade lens. No one saw this lens come.

Finally, the EF 400mm f/4 DO IS II USM lens is the successor to the Canon EF 400mm f/4 DO IS. Several patents filed by Canon in the past pointed in this direction, the latest patent being this one.

Stay tuned, I am sure pictures will follow soon.

[via digicame.info]