Canon RF 600mm f11 and Canon RF 800mm f11 compact super telephoto lenses

In the summer of 2020, Canon released two interesting, specific and innovative lens is:

  • Canon RF 600mm f/11 IS STM
  • Canon RF 800mm f/11 IS STM

They are interesting due to their unusual compactness and lightness for such a category of optics. The 600mm lens weighs only 930 grams, while the 800mm lens weighs only 1260 grams.

Here's an infographic for comparison Canon EF 600mm f4L vs RF 600mm f11:


Here's an infographic for comparison Canon EF 800mm f5.6L vs RF 600mm f11:

The difference is palpable. Weight savings in almost 3 times! But we must understand that these lenses, although they have the same focal lengths, are still very different from each other.

Firstly they differ in light intensity. f4 и f11 are very different things. Because of this, the new Canon RF 600mm f11 and Canon RF 800mm f11 are hardly worth considering for the professional/highly enthusiastic sports photography. We'll talk about appointment later.

Second difference - new lenses have two positions. One - assembled for transportation, the second - with an extended tube - for shooting.


In working condition, these lenses become 30 percent longer.

Third difference new Canon RF 600mm f11 and RF 800mm f11 from classic lenses is to use gapless double-layer diffractive optics (OD).

There aren't many DO lenses in Canon's lens lineup. I immediately remember Canon EF 70-300mm f/4.5-5.6 DO IS USMreleased in 2004. Its small weight of 720 grams was just achieved due to this very diffractive optics. And in terms of compactness, it is comparable to the familiar EF 24-105 f4L. True, the sharpness there was not up to par.

Canon EF 70-300mm f/4.5-5.6 DO IS USM

Without going deep into the details, diffractive optics is a product of new technologies and became possible relatively recently. Canon announced the development of multi-layer diffractive lenses in 2000, the first prototype of them was demonstrated at the Photokina photo exhibition in Cologne in the same year 2000.

This is how a conventional lens differs from a diffractive lens:

diffractive optics

Source with a more detailed description. Description of this technology Canon website (in English).

The result?

As a result, we have two very long lenses for Canon mirrorless full-frame cameras.

This is how they look compared to the Canon EF 100-400mm f4.5-5.6L II:


Focal lengths of 600mm and 800mm are extremely specific. I would not recommend buying such optics just like that, out of boredom or curiosity. Even a lens with a focal length of 300mm is already very specific. The same two models mean that you will know exactly what and where you are going to do with them even before buying.

Application for 600mm and 800mmcovert photography of birdsand small or very wild animals. They are also suitable for spotting - aircraft tracking. One could say about astrophotography (because here we have practically telescopes), but aperture f11 with such focal lengths necessarily implies the use of a GPS tracker, without it you should not even think about it.

I mentioned above that such lenses not suitable for sports photography. There are several reasons. Aperture f11, even outdoors, limits the use of such optics. And for sports, shutter speeds of about 1/1000 are needed. Focal length too long range. For the same football range lenses 100-400mm are usually optimal. Both lenses are equipped with STM motors, which are inferior in speed to USM motors. The speed may not be enough for dynamic scenes.

use Features

When you're dealing with such telephotos, you need to have good eyesight to see without a lens what you want to shoot. Even with 300mm you have to adapt and get used to it. It's much easier when you have a zoom like 100-400mm, you can look at the scene at 100mm and then zoom in to what you need to 300-400mm. Here you have fixes and you need to immediately direct them in the right direction. Aiming is difficult, especially if the subject is small. On the other hand, for shooting birds, such focal lengths are very useful, because. 300mm in full frame is frankly not enough for this.

One more moment - air density. When you shoot at long distances, especially in urban areas, the composition of the air will affect the quality. This is unusual for those who have not shot with such focal lengths. But you need to know that under certain conditions, your pictures will be frankly soapy. And the reason is not in the lens / camera / crooked hands, but in the fact that you will shoot through a dense atmosphere that strongly refracts the rays of light. The only way to fix this is to change the location. It is ideal to take pictures over water bodies, where the picture will be clear. But if you try to shoot some city at 600mm from afar, you will get soap.

Optical qualities

I'll talk about it in detail if these lenses will fall into my hands for review.

While you can see the tests here.


Making a super-telephoto lens compact and lightweight is a challenge for an optical manufacturer. The same problem is faced not only by manufacturers of photographic equipment, but also when creating telescopes. And just from there there is another older version - use of mirror optics. For example, it is used in the Samyang 500mm f/6.3 lens.

samyang 500mm f6.3

For photographers, such lenses have more disadvantages than advantages. They are optically frankly weak. There is a specific bokeh with "donuts" and they are all without autofocus. But cheap.

Another option to shoot far away and stay light is to use cameras with smaller sensors and get closer due to the crop factor. This is a frequent trick system preferences micra 4/3. The problem is that a 150mm double crop is not at all what a 300mm lens would give you in full frame. In short, the picture will be weak. Only in this case, not because of the lens, but because of the small matrix.

Benefits of new products


The beauty of the new Canon RF 600mm f11 and Canon RF 800mm f11 lenses is that they are not only compact, but full-frame, and autofocus and relatively inexpensive. You have to pay for this with aperture, but everything does not happen at once.

Also read:

Fujinon XF 70-300mm F / 4-5.6 R LM OIS WR

Review Fujinon XF 70-300mm F4-5.6 R LM OIS WR

Fujinon XF 70-300mm f / 4-5.6 telephoto lens was released in March 2021. After practical acquaintance with this lens, I will say that it is a very worthy model. In general, I am somewhat cool about the Fujifilm optics, but I liked this lens for the totality of its characteristics.

This lens is designed for crop cameras. It has focal lengths of 70-300mm and gives a full-frame equivalent of 105-450mm. This focal range is conducive to shooting outdoors. To some extent, it gives the effect of binoculars. You can view and photograph quite distant objects that can be difficult to see with just your eyes. At the same time, it weighs only 580 grams, which is really a little for such a telephoto. In the hands it feels medium in weight. With such a lens you can travel and it will not burden you too much.

Fujinon XF 70-300mm F4-5.6 R LM OIS WR with camera Fujifilm X-S10

The image quality made me happy. The lens provides a high-contrast and sharp image at all settings. You don't need to close the aperture or look only in the center. The image pleases with sharpness and pleasant color everywhere and always. The only caveat is that this lens requires a lot of light. In the room, you do not shoot with him despite the high-quality stabilization. The Fujinon XF 70-300mm F4-5.6 has a built-in optical stabilizer, and the Fujifilm X-S10 camera has matrix stabilization... As a result, you can shoot handheld at shutter speeds of around 1/30 at the long end of the tele-range. Only at these shutter speeds will you be able to shoot only completely static subjects, which severely limits the use of the lens in low light.

But on the street, such optics reveal themselves to the fullest - you can notice interesting details of the landscape, engage in secretive street photography, shoot sports and wildlife, take portraits from long distances (for this it is still better to take portrait lenses) and even take macro photography. The zoom ratio of 0.33x (0.5x on crop) allows you to shoot very close. In this case, the sharpness will be very high.

The autofocus of the Fujinon XF 70-300mm F4-5.6 is fast and tenacious, no complaints.

You can learn more about this lens and examples of photos for it in my video review:

fujinon 23mm f2 vs viltrox 23mm f1.4

Fujinon XF 23mm f / 2.0 vs Viltrox AF 23mm f / 1.4 review

23mm cropped - very convenient and popular focal length. This is the 35mm equivalent at full frame. Only depth of field will be greater.

The lens with 23mm is an excellent kit for street photography, reportage photography, and in general a good lens for all occasions. I find a 23mm crop prime lens to be much better than a bulky under-zoom. Sigma 18-35mm f1.8... In fact, 23mm does the same thing, but weighs less and can have a higher aperture.

Therefore, you should take a closer look at the heroes of our review:

fujinon 23mm f2 vs viltrox 23mm f1.4

Fujinon XF 23mm f / 2.0 Key Features

  • Sharp always
  • Not cheap
  • Very compact and lightweight
  • Aperture only f2.0

Key features of the Viltrox AF 23mm f / 1.4

  • Sharp center, edges closed only
  • Inexpensive
  • Medium in size and weight
  • Good aperture, more bokeh

My favourite - Viltrox AF 23mm f / 1.4, I constantly shoot my reviews for youtube and I drive streams.

For more details, see my review:

Let me remind you that the Viltrox 23mm f1.4 is now available for Canon EOS Mwhich is cool of course.

I also compared Fujinon 23mm f1.4 vs Viltrox 23mm f1.4 and Fujinon 56 f1.2 versus Viltrox 56 f1.4:

In Ukraine, I recommend this shop to buy Fujifilm lenses.

I also have overview of the entire line of Viltrox 23, 33, 56, 85.