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

BH #CA4004ISEFM2 • MFR #8404B002
Canon EF 400mm f/4 DO IS II USM Lens
Key Features
  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/32
  • Gapless Dual-Layer Diffractive Optics
  • One Aspherical Element, One UD Element
Featuring a unique optical design and paired with advanced image stabilization technologies, the Canon EF 400mm f/4 DO IS II USM is a super telephoto lens characterized by its relative lightweight and compact form factor. Gapless dual-layer diffractive optics are employed within this lens' construction to produce a smaller, lighter 400mm option with enhanced correction for chromatic and spherical aberrations. Aspherical and UD elements are also used to further reduce distortions and a Sub Wavelength Coating contribute to increased clarity and contrast. Complementing the sophisticated optical layout, a four stop-effective Image Stabilizer helps to minimize the appearance of camera shake and can be dedicated to different styles of shooting. Ideally positioned as a versatile option for sports and wildlife photographers, this lens' high-performance attributes and natural handling render this a viable telephoto option for a variety of applications.
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Canon EF 400mm f/4 DO IS II USM Overview

Featuring a unique optical design and paired with advanced image stabilization technologies, the Canon EF 400mm f/4 DO IS II USM is a super telephoto lens characterized by its relative lightweight and compact form factor. Gapless dual-layer diffractive optics are employed within this lens' construction to produce a smaller, lighter 400mm option with enhanced correction for chromatic and spherical aberrations. Aspherical and UD elements are also used to further reduce distortions and a Sub Wavelength Coating contribute to increased clarity and contrast. Complementing the sophisticated optical layout, a four stop-effective Image Stabilizer helps to minimize the appearance of camera shake and can be dedicated to different styles of shooting. Ideally positioned as a versatile option for sports and wildlife photographers, this lens' high-performance attributes and natural handling render this a viable telephoto option for a variety of applications.

Housed within a weather-resistant barrel, this lens also features fluorine coatings on the front and rear elements for protection against fingerprints and other elements from affecting image quality. Focusing is complemented by the inclusion of AF stop buttons at the front of the lens, as well as full-time manual focus override and Power Focus mode for smooth shifting of focus.

Super telephoto 400mm f/4 lens is compatible with full-frame EF-mount DSLR cameras, as well as APS-C-sized sensors where it will provide a 640mm equivalent focal length.
Gapless dual-layer diffractive optics contribute to a marked reduction in chromatic and spherical aberrations as well as benefit the design of a relatively compact and lightweight lens.
One large diameter ground aspherical element and one ultra-low dispersion UD element minimize aberrations and distortions while also contributing to greater sharpness and clarity.
A Sub Wavelength Coating has been applied to individual elements to control lens flare and ghosting for greater contrast and color fidelity when working in strong lighting conditions.
An Optical Image Stabilizer helps to minimize the appearance of camera shake by up to four shutter speed stops to better enable working in low-light conditions and with slower shutter speeds. Three distinct IS modes are available: standard single-shot mode, a panning-optimized mode, and a mode that only activates the Image Stabilizer during the exposure.
A ring-type Ultrasonic Motor (USM), along with optimized focusing algorithms and a high-speed CPU, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
Focus Preset function is available to quickly recall a programmed focusing position.
Focus Limiter switch lets you constrain the focusing to three different ranges to suit different applications: 10.8-26.2', 10.8'-infinity, or 26.2'-infinity.
A Power Focus setting is available, and allows you to electronically and smoothly adjust your focus position to suit video recording. This setting utilizes a dedicated ring in front of the main focusing ring and allows you to use one of two different focusing speeds.
A weather-resistant design protects the lens from dust and moisture to enable its use in inclement conditions. Additionally, fluorine coatings have also been applied to the front and rear lens elements for further protection against fingerprints and smudging.
Rounded nine-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
Fixed rotating tripod collar benefits working with the lens atop a tripod or monopod.
Compatible with optional EF 1.4X and EF 2X teleconverters.
UPC: 013803217049

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

Focal Length400mm
Maximum Aperturef/4
Minimum Aperturef/32
Lens MountCanon EF
Format CompatibilityFull-Frame
Angle of View6° 10'
Minimum Focus Distance10.83' / 3.3 m
Maximum Magnification0.13x
Optical Design18 Elements in 12 Groups
Diaphragm Blades9, Rounded
Focus TypeAutofocus
Image StabilizationYes
Tripod CollarFixed and Rotating
Filter Size52 mm (Drop-In)
Dimensions (ø x L)5.04 x 9.16" / 128 x 232.7 mm
Weight4.63 lb / 2.1 kg
Packaging Info
Package Weight14.4 lb
Box Dimensions (LxWxH)19 x 16 x 14"
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When using the 400 DOII lens with the EF to RF ...

When using the 400 DOII lens with the EF to RF filter adapter (which of course will have its own drop in filter of choice), does one remove the neutral drop in filter fitted with the lens for leave it in? Thanks
Asked by: Isaac
The filter can stay in place.
Answered by: Kirk
Date published: 2020-12-17

Image quality 400mm DO vs new 100-400. I ...

Image quality 400mm DO vs new 100-400. I understand other tradeoffs but interested in IQ?
Asked by: Bruce
The Canon EF 400mm f/4 DO IS II USM is optically better than the Canon EF 100-400mm f/4.5-5.6L IS II USM Lens and also has a one-stop advantage in exposure.
Answered by: Boyd
Date published: 2021-07-22

question

How would you say the 400 f/4 DO II compares to the 300mm f/2.8 in terms of sharpness & bokeh? Trying to decide between the two and am inclined to more reach available in the 400mm.
Asked by: Rick D.
Sharpness is about the same and have use it with my 7D2 with great results. Both lens are keepers in my book.
Answered by: Bill F.
Date published: 2018-08-25

question

Hi B&H,I recently purchased a 400DO II Lens from you. Now looking for a compact soft case to hold the lens and hood. Something like the Lowepro soft case, but unfortunately the Lowepro does not meet the required dimensions. Do you have another recommendation ? Your help is appreciated. Thanks Kent
Asked by: Kent D.
Try the Kinesis brand bags - I used the real long one for my 500 - I think you would find them acceptable
Answered by: Marcy S.
Date published: 2018-08-25

Update please. 300mm f2.8 with 1.4x image quality ...

Update please. 300mm f2.8 with 1.4x image quality vs 400mm f4?
Asked by: Bruce
The image quality is virtually the same but by using the 300mm f2.8 with the 1.4x teleconverter, you gain more versatility. You can use the 300mm f2.8 in low light when 420mm is not needed and then you can use the 300mm plus the teleconverter when a longer range is needed.
Answered by: Dan
Date published: 2021-07-12

I have a 7D Mark 2 camera. Will the 400 f/4 DO II ...

I have a 7D Mark 2 camera. Will the 400 f/4 DO II auto focus all points with both the 1.4iii extender and the 2.0iii extender ?
Asked by: Fred
Sorry, but in the world of super telephotos and 2x extenders, you are lucky to have any AF focus points. On the 7D Mark II with the 400mm f/4 and the 2x III, the fastest stop is f/8. With that stop, you get the center AF point with its cross point focusing. The points immediately above, below, left and right are regular AF and are available if you select AF point expansion (manual selection).
Answered by: Dennis A
Date published: 2019-12-08

I'm concerned with this "unique" DO lens. Now ...

I'm concerned with this "unique" DO lens. Now that this has been out for a few years: a) Any issues with the DO? b) Image quality 400mm F4 vs 300mm F2.8?
Asked by: Bruce
No issues on this DO. It is sharper than the original DO. In this Mark II version you can see more fine detail vs the first version of the DO. Regarding question 2 they are equally as sharp in the center. In the corner the F/4 lens is slightly sharper but when you narrow down the aperture of the Canon EF 300mm f/2.8L IS II USM Lens to F/4 it gets equally as sharp.
Answered by: Daniel
Date published: 2021-07-12

question

WILL THIS FIT THE CANNON 5D III?
Asked by: Anonymous
The Canon 400mm f/4 DO IS II USM lens will be fully compatible with the 5D III, yes.
Answered by: Christina S.
Date published: 2018-08-25
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