Canon has announced two telephoto lenses for the RF mount, the Canon RF 400mm f/2.8L IS USM and Canon RF 600mm f/4L IS USM.

Both lenses are anything but inexpensive, the RF 400mm goes for $11,999 and the RF 600mm for $12,999. Both lenses are scheduled to ship in July 2021 and preorders are open.

Lens RF 400mm F2.8

The Canon RF400mm F2.8L IS USM

Canon RF 400mm f/2.8L IS USM Lens 5053C002 B&H Photo Video (bhphotovideo.com)
 

Focal Length

400mm

Maximum and Minimum Aperture

F2.8-32

Lens Mount Type

RF Mount Canon RF mount; Exclusively for Canon EOS R-series cameras

Minimum Focusing Distance

8.20 ft. / 2.5m

Maximum Magnification

0.17x (Fills frame with subject 7.9 x 5.3 inches / 202 x 135mm in size)

Angle of View

Diagonal: 06°10′

Lens Construction

17 elements in 13 groups

Special Elements

Two Fluorite, One Super UD

Lens Coating

Super Spectra, Fluorine (front & rear elements), ASC

Filter Size Diameter

Ø52 mm (Drop-in filter — Drop-in Screw-type Filter Holder 52 [WIII] included, with 52mm clear Protect Filter)

Aperture Blades

9

Dust/Water Resistance

Supported (Rubber ring on lens mount, focus/playback rings, switch panel and switches)

IS Mode Selection

Provided: mode 1, 2, 3

Optical Image Stabilization

CIPA standard: 5.5 stops (using an EOS R / EOS R5)

Maximum Outer Diameter x Length

Approx. 6.4 in x 14.4 in. / 163mm x 367mm

Weight

Approx. 6.37 lbs. (102 oz.) / 2890g

Lens RF 600mm F4.0

Canon RF600mm F4L IS USM

Canon RF 600mm f/4L IS USM Lens 5054C002 B&H Photo Video (bhphotovideo.com)
 

Focal Length

600mm

Maximum and Minimum Aperture

F4-32

Lens Mount Type

RF Mount Canon RF mount; Exclusively for Canon EOS R-series cameras

Minimum Focusing Distance

13.78 ft. /4.2m

Maximum Magnification

0.15x

Angle of View

Diagonal: 04°10′

Lens Construction

17 elements in 13 groups

Special Elements

Two Fluorite, One Super UD

Lens Coating

Super Spectra, Fluorine (front & rear elements), ASC

Filter Size Diameter

Ø52 mm (Drop-in filter — Drop-in Screw-type Filter Holder 52 [WIII] included, with 52mm clear Protect Filter)

Aperture Blades

9

Dust/Water Resistance

Supported (Rubber ring on lens mount, focus/playback rings, switch panel and switches)

IS Mode Selection

Provided: mode 1, 2, 3

Optical Image Stabilization

CIPA standard: 5.5 stops (using an EOS R / EOS R5)

Maximum Outer Diameter x Length

Approx. 6.6 in x 18.6 in. / 168mm x 472mm

Weight

Approx. 6.8 lbs. / 3090g

Press Release:

The Canon RF400mm F2.8L IS USM and Canon RF600mm F4L IS USM are both designed to be optically identical to their EF counterparts. The RF400mm and RF600mm weigh in at 6.37 and 6.81 pounds with a minimum focusing distance of 8.2 and 13.8 feet, respectively. Both lenses share many of the same critical features that help professional high-end super-telephoto lenses stand out from the crowd. Those features include:

• Ideal for a wide variety of shooting situations, including sports, aviation, trains, automotive, and wildlife, such as birding.
• Optical Image Stabilization with up to 5.5 stops6 of shake correction. Including three IS Operation Modes — still subjects, panning, and irregular movement.
• Proprietary Canon lens coatings, Super Spectra Coating (SSC), and Air Sphere Coating (ASC) help minimize ghosting and flaring. Lens placement and coatings are optimized to provide users with clear, high-contrast images even when there is a bright light source.
• Lenses include fluorite and super UD lens elements arranged in such a way to help correct chromatic aberration and make the models more compact. Like the latest Canon EF400mm f/2.8L IS III USM and EF600mm f/4L IS III USM lenses, released in the fall of 2018, weight on these RF-series super-telephotos has been significantly reduced vs. previous-generation Canon super tele designs.
• Compatible with Canon RF 1.4x and 2x extenders, and feature a customizable electronic focus ring, with manual focus capability during SERVO AF.
• A nine-blade circular aperture provides users beautiful bokeh and ideally blurred backgrounds when the aperture is stopped down.
• For added convenience when on a shoot, two focus presets are available. Users can instantly return to one of two memorized focus distances.
• Rugged Canon L-series dust and water-resistant design with vibration and shock resistance. The front element has been dressed with a fluorine coating for easy cleaning.
• nfrared reflective pigments with high reflectance and titanium oxide lens barrel coating with silica provide excellent UV weather resistance and heat reduction.

• Canon RF Lenses Pricing and Availability
  The Canon RF 400mm f/2.8L IS USM and Canon RF 600mm f/4L IS USM are scheduled to be available in July 2021 for an estimated retail price of  $11,999.00 and $12,999.00, respectively.

This post was originally published by Canon Rumors - April 15th, 2021