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Canon RF 800mm f/11 IS STM Review & Comparison With Tamron SP 150-600mm f/5-6.3

Canon released two unique lenses with the Canon RF 800mm f/11 IS STM and RF 600mm f/11 IS STM. Here is a review for the former.

Brent Hall reviews the Canon RF 800mm f/11 IS STM and compares it with the Tamron SP 150-600mm f/5-6.3 Di VC USD G2. Which one is the best budget wildlife lens?

At a glance:

Super-telephoto prime is designed for use with full-frame Canon RF-mount mirrorless digital cameras
Fixed f/11 aperture contributes to the sleek and portable form factor as well as a balanced mixture of depth of field and sharpness
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
Retractable/extendable design, with a locking lens barrel, offers an impressively compact form factor considering the super-telephoto design
An Optical Image Stabilizer helps to minimize the appearance of camera shake by up to four stops to better enable working in low-light conditions and with slower shutter speeds
STM stepping motor offers fast, quiet, smooth, and accurate autofocus performance that is ideal for video recording as well as still shooting
Configurable Control Ring can be used to adjust a variety of exposure settings, including aperture, ISO, and exposure compensation
Compatible with optional Extender RF 1.4x and Extender RF 2x teleconverters to further increase the effective focal length.

Also interesting: an interview with the engineers who made these unique lenses.

Canon RF 600mm f/11

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Canon RF 800mm f/11

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Canon RF 800mm f/11 & RF 600mm f/11 Review (the super-telephotos for us all)

October 13, 2020
Canon Reviews
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Canon surprised quite a few people when they released the RF 800mm f/11 and RF 600mm f/11 lenses. I have yet to see a negative review.

Gordon Laing thoroughly looks at the Canon RF 800mm f/11 and RF 600mm f/11 lenses, the “super-telephotos for us all”, in his 18 minutes video review.

Also interesting: an interview with the engineers who made these lenses.

Canon RF 600mm f/11

America: B&H Photo, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Canon IT, WEX Photographic, Canon FR, Canon UK, Canon DE

Canon RF 800mm f/11

America: B&H Photo, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Canon IT, WEX Photographic, Canon FR, Canon UK, Canon DE

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Canon Engineers Explain Why They Made The RF 800mm & 600mm Lenses (inspired by 1960’s 1000mm f/11)

October 2, 2020
Canon News
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In an interview, Canon engineers tell how it came Canon made the RF 800mm f/11 and RF 600mm f/11 lenses. And what inspired them.

In an interview with DC Watch, Canon engineers tell the reasons and challenges in designing the RF 800mm f/11 and RF 600mm f/11 lenses. It seems, a boyhood experience of one of the engineers was one of the reasons (machine translated):

Iezuka: I’m sorry about my boyhood story. At that time, I wanted to take a picture of a wild bird, Little Egret, but I couldn’t buy a super-telephoto lens because it was too expensive. I tried to make a telephoto lens with a close-up lens with a focal length of 400 mm, but it didn’t look good, and I wondered why it didn’t look so good.
I knew that there were many people who gave up what they wanted to shoot and the expressions they wanted to shoot because they couldn’t buy a super-telephoto lens and couldn’t carry it because it was big and heavy.

Canon already made a similar lens in 1960, the R 1000mm f/11:

Looking back, Canon’s first SLR camera system, the R mount (1959-), also had a “slender” super-telephoto lens like the 600mm / 800mm F11. The optical system is as simple as a telescope, the focusing is bellows, and the weight is as light as 2 kg.

Why f/11?

Iezuka: Since the EOS R system can measure distances up to the maximum aperture of F22, I thought that the F value of the lens alone would be F11, considering the installation of a 2x extender. With F8, the lens becomes thicker, and with F16, it exceeds F22 when the 2x extender is attached. Around this time, the idea of ”Why don’t you eliminate the aperture unit for F11?”
I understood that there is a need to reduce the shutter speed further from F11 when considering panning at super telephoto, but control of the depth of field is less important at super telephoto, and it is low. The aperture unit was not installed because it leads to cost reduction and weight reduction.

Be sure to read the whole interview at DC Watch. More Canon RF 800mm and RF 600mm coverage is listed here.

Canon RF 600mm f/11

America: B&H Photo, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Canon IT, WEX Photographic, Canon FR, Canon UK, Canon DE

Canon RF 800mm f/11

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Europe & UK: Amazon DE, Amazon UK, Amazon IT, Canon IT, WEX Photographic, Canon FR, Canon UK, Canon DE

Canon RF 800mm f/11 IS STM Review (highly recommended)

October 1, 2020
Canon Reviews
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Whaaaat? a f/11 lens with 800m? Kidding? Read this Canon RF 800mm f/11 IS STM review and you might get surprised.

At a glance:

RF-Mount Lens/Full-Frame Format
Fixed f/11 Aperture
Retractable, Locking Lens Barrel
Gapless Dual-Layer Diffractive Optics

The RF 800mm seems to be the world’s lightest 800mm telephoto lens. That’s possibile because of the fixed f/11 setting. Photography Blog posted their Canon RF 800mm f/11 IS STM review. From their conclusion:

[…] there’s no getting away from that fixed f/11 aperture which limits its use to either bright conditions or high ISO speeds (or sometimes both), the lack of any kind of weather-sealing at all may well put off more hard-core users, the 6m minimum focusing distance is a little restrictive, the tripod mount can’t be rotated from landscape to portrait position, there could be some question marks over the long-term durability of the retractable design, and the essential lens hood is unfortunately an expensive optional accessory.
All in all, though, the Canon RF 800mm F11 IS STM is a refreshingly brave attempt to make an otherwise expensive branch of photography more accessible, both in terms of cost and portability – there simply aren’t any other 800mm lenses that are as inexpensive, compact and crucially as good as this one. Bravo to Canon for thinking out of the box.
Read the review at Photography Blog

They rated the lens “highly recommended” and gave it 4.5/5 stars. More Canon RF 800mm and RF 600mm coverage is listed here.

Canon RF 600mm f/11

America: B&H Photo, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Canon IT, WEX Photographic, Canon FR, Canon UK, Canon DE