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Showing posts with label Canon EF 400mm f/4L DO IS II review and sample images. Show all posts
Showing posts with label Canon EF 400mm f/4L DO IS II review and sample images. Show all posts

Tuesday, July 7, 2020

Canon RF 600mm f/11 and RF 800mm f/11 Diffractive Optics lenses coming very soon


Canon RF 600mm f/11 DO lens

Canon RF 800mm f/11 DO lens


Canon will be announcing two RF long lenses very soon. The RF 600mm and RF 800mm will feature a DO element and boast between 4 and 5 stops of image stabilization. The 800mm lens is made up of 11 elements in 8 groups and weighs 2.78 lbs (1260 g) while the 600mm is made up of 10 elements in 7 groups and weighs about 2.0 lbs (930 g).

The RF 600mm length is 7.8 inches (199.5 mm) when retracted and 10.6 inch (269.5 mm) extended for shooting. The RF 800mm will be 11 inches (281 mm) retracted and 13.8 inches (351.8 mm) extended for shooting. Both lenses are very slow with a minimum aperture of f/11 and have a list price of around $700 to $900 respectively.

I am a fan of Canon's Diffractive Optics lens technology, like the EF 400mm f/4 DO IS II, for wildlife photography but find it puzzling what these new cheap RF long lenses are good for?

Monday, July 20, 2015

Canon EF 600mm f/4 DO IS Lens Patent


Canon EF 400mm f/4 DO IS II lens




Canon's announced their first Diffractive Optices lens, the EF 400mm f/4 DO IS in 2001. It was a revolutionary lens with a dramatic weight reduction for that speed and focal length lens. I bought the glass a few years later and it quickly found a place in my equipment bag. The only slight drawback of the lens was it's not one of Canon's sharpest.

The EF 400mm f/4 DO IS II was announced late last year and this time I immediately placed my pre-order and have subsequently taken the lens on wildlife photography shoots around the globe. This second generation lens is a big improvement and definitely produces sharp images. Nikon has finally seen the light and is trying to catch up with their own version of DO lens, called Phase Fresnel.

Below is another new Canon patent discovered by Egami, the Japanese blog, for the EF 600mm f/4 DO lens. I will be most interested in acquiring this piece of glass if Canon decides to put it into production. You can see my works taken with the EF 400mm f/4 DO IS II on MichaelDanielHo.com


Patent Publication No. 2015-11171 (Google Translated)

  •     Published 2015.1.19
  •     Filing date 2013.6.28

Example 2

  •     Focal length 588.30mm
  •     Fno. 4.12
  •     Angle of view 2.11 °
  •     Image height 21.64mm
  •     Lens length 397.80mm
  •     BF 2.02mm
  •     Positive ShiboTadashi
  •     Inner focus
  •     Vibration control

Tuesday, December 16, 2014

Canon EF 400mm f/4 DO IS II Lens Review

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



Canon EF 400mm f/4 DO IS II lens in 400D lens case

Canon EF 400mm f/4 DO IS II USM lens























Canon announced the EF 400mm f/4 DO IS II lens on September 11. These is one of my favorite Canon lenses and I placed my order right after the announcement and have just received the new model. This glass is about 13 years in the making. The original model was introduced in 2001 and it had one of the earlier version of Image Stabilization with a 2 stop advantage.

Although the technology is aged and it is not one of the sharpest lens in Canon's EF lineup, the Series I lens is still a very good performer and its relatively fast speed, excellent focal length and light weight made it my favorite, handheld lens on wildlife photo shoots. The Series II lens incorporates all of Canon's technological advances in the last decade and more with new optics, coatings and material.

Specifications for EF 400mm f/4 DO IS II lens :

  • Lens Construction - 18 elements in 12 groups
  • Focal Length & Maximum Aperture 400mm 1:4
  • Diagonal Angle of View 6°10’
  • Focus Adjustment Inner focusing system with USM
  • Minimum Focusing Distance 10.83 ft. / 3.3 m
  • Filter Size 52mm drop-in
  • Latest generation 4 stop Image Stabilization system
  • Comes with 3 IS modes
  • Attached tripod collar
  • Latest material, offering a slight weight addition to current model
  • Max. Diameter x Length, Weight
  • Approx. 5.04 x 9.16 in. / 128 x 232.7 mm
  • Approx. 74.1 oz. / 2100 g
  • List price - $6,899

The EF 400mm f/4 DO IS II lens, together with the recently released EOS-7D Mk II camera, is one of my favorite combination equipment for handheld, wildlife photography.

The Series II lens is equipped with the latest IS technology, with a 4 stop compensation and 3 IS Modes, a feature shared only by the other Series II Super Telephoto lenses.

  • Mode 1 is designed for stationary subjects 
  • Mode 2 is designed for panning, allowing a linearly-moving subject to be tracked 
  • Mode 3 detects panning but IS activates only at the moment when the shutter releases

This new Series II telephoto lens features gapless dual-layer diffractive optical elements for improved diffraction efficiency with reduced flare. They are arranged with a large-diameter ground aspheric lens and a UD lens for unparalleled sharpness and clarity. New coatings help to reduce ghosting and ensure excellent color balance, while reducing fingerprints on the front and rear of the lens. A new 9-blade circular aperture provides beautiful bokeh.

The tripod collar is now permanently attached to the lens. It has a very small foot and even with a lens plate attached, it is rather difficult to carry the lens by grabbing on to the foot, especially if one has large hands. The most annoying thing about Canon's Super Telephoto lenses is their factory lens cap and the EF 400mm DO II is no exception. The cap is 'cumbersome' and does not do a great job in protecting the glass. I always substitute it with the Don Zeck lens cap. The DZ caps are on all my Canon Super Telephoto lenses.

With the improved Image Stabilization system and material of the new lens, the weight has increased by about 5.3 oz / 160 g. The dimension is almost identical to the old lens and it is extremely well built and has a familiar feel in my hands. The 400D lens case is slightly redesigned and feels lighter. The handle on top of the old 400B case is gone, replaced by a side handle on the right.

I have taken the lens out for a quick birding trip. Mounted the Canon EF 2.0x Series III extender and used it on the EOS-1D Mk IV camera. All shots were taken with f/8 aperture. Some shots are from very far away (Osprey and Snowy Egret). The others are from moderate distance. The lens' IQ is impressive and much sharper than the Series I especially with the 2.0x extender mounted.

It is nothing less than amazing when paired with the EOS-1D Mk IV and EF 1.4x and EF 2.0x extenders, I have a handheld package with about 520mm to 1,040mm focal length to work with and not get tired even after a full day of wildlife photography. I have also tried the lens with the EOS-7D Mk II but recommend using only the EF 1.4x on it. The EOS-7D Mk II autofocusing ability is less than desirable with f/8. It is slow and I have lost crucial wildlife shots trying to AF with that aperture. Read my 7D2 review for details.

I have just returned from a photo shoot down in the Southern Oceans. The weather was windy, cool and sometimes misty. The EF 400mm f/4 DO IS II performed flawlessly. It is a joy to use especially on handheld photography. I get to move around quickly following the wildlife without the bulk and weight of the EF 200-400mm f/4L IS . Of course, the drawback is I have to use my feet a lot to get closer or further from the action whereas the EF 200-400mm is a zoom lens with a built-in extender. The DO's sharpness improved dramatically with a little stepping down. I will give it additional field testing in Asia.

Just back from India. The weather was was too hot by Indian standard but the conditions were extremely dusty and bumpy on the jeeps. Put the EF  400mm DO II through some though field tests and it came through with flying colors.

Back from my latest shoot in Costa Rica. It rained often and the weather super humid. This DO lens is a joy to use with or without a tripod.. AF was fast and accurate, even under heavy rain and cloud forest lighting conditions. Used it with the EOS-7D Mk II , EOS-1D Mk IV and EOS-1D X cameras. This is my favorite Super Telephoto lens in my inventory. It is a real pleasure to be able to handhold a 400mm Super Telephoto lens all day and get incomparable mobility to follow the wildlife action. You can see more of my works on MichaelDanielHo.com