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09/15/25 04:59 PM
Canon RF 200-800mm f/6.3-9 IS USM — Field Review

I have been using the Canon RF 200-800 for over a year. It has made two trips to Yellowstone and I have used it in a variety of situations, I have also used it for shooting FastCAT (a dog sport). For folks who are not familiar with the RF 200-800, it is a remarkably flexible lens with a variable aperture. At 200, it is a F.6.3 lens, at 800mm it drops to F9 on the long end. The lens comes standard with Image Stabilization. While there are other lens options out there, there is not a lot out there that is in the price range that offers the flexibility of this lens. I realize I am supposed to keep you guessing until the end of the article, but what’s the point? It is a really solid option – as long as you realize what it is that you are working with.

1. Reach and compositional flexibility

This is the first native lens that I have ever had that extends past 300mm. While I cheated with my 2x extender on my 300mm lens prior, all I can say is how liberating it is to have a lens I can zoom that far out without having to shuffle in my bag for an extender. Before we go further, it might be helpful to examine why I am saying that tele-extenders are not the best way of getting additional focal length with a camera. Unfortunately, any time you put something between your camera body and the lens, you are adding additional layers of complexity to the process. Even in the best of scenarios, adding a tele-converter can introduce a variety of undesired consequences - from Chromatic Aberrations (Color Fringing) to Reduced Sharpness (loss of detail) to Flare and Ghosting. Second, the greater the magnification you add to the equation, the more significant you see these additional flaws. Third, by adding an extender, you cut down light coming into the sensor. With a 1.4 extender, that is usually a full stop of light. With a 2x extender, that would be two stops of light. This reduced level of light makes it harder to autofocus the lens and can cause a more degraded image because this also yields a lower signial-to-noise ratio. The impacts of a tele on a lens may not be consistent between lenses - and my guess is that the more complex the system the more potentially damaging the impacts are. i.e. using a 1.4 extender on a prime lens will have different impacts on a Zoom Lens which is more complex and making some optical compromises in order to get the focal length. Having said all that, photography is all about knowing what trade-offs you need to make in order to get an image that you are pleased with. I am also not saying that every image ever taken with a tele-extender is 'bad....' I have over 20 years of images that I took with extenders in order to get the equivalent focal length that I needed for a situation. For the most part, effective post processing can really help with some of these difficulties - but you still need to know it is there in order to deal with it. The goal of not having a Tele Extender on my lens was absolutely one of the reasons why I was looking so strongly at the RF200-800 lens.

With all this said, having the new RF 200-800 that I did not need to make this profound compromise has really been a game changer for situations when I needed to be far away. For example, last fall, when I was in Yellowstone, I was photographing a number of wolves that had taken down an elk in the river. The wolf images in this article would never have been possible had I been using a significantly shorter focal length lens.

Wolf Photo


On that same trip, I was also fortunate to see Grizzly 399 in the Tetons with her 4 cubs. I am still heartbroken with her passing – what a loss. In all my years photographing the Tetons, I had never seen her. LOL, I knew where she was, so to speak, but our paths had not crossed.
A sad number of the images I took of 399 and her cubs did not come out. Technique really matters, and as you can expect, the light was crap. Given the R5II’s sensor limitations at high ISOs (I am sorry, they are real) I was afraid to really kick up the camera as far as I needed to in order to capture as many really sharp images.
The rule of thumb is that you need your camera to be at 1/focal length for a sharp image. It is also a good rule of thumb that in order to freeze action, you need to be at least 1/1000th of a second. I like to be closer to 1/1250th of a second. I was shooting shutter speeds of closer to 1/250th of a second. I struggled even though I had the camera on a tripod. Did I mention that technique counts? However, this is also an area where having more expensive, faster glass also counts. There is no question that for me, this lens is a compromise. I don’t do lots of wildlife or fast moving dog photography (think FastCAT) events and I cannot justify the expense on a faster lens. What I need is closer to $14,000 – and if the bookings and income are there, I will consider it..but I am a firm believer of staying within my budget and I am not buying glass for the exception to the rule.


Grizzly 399 Image

2. Super Sharp when used within its limits
At many focal lengths (especially middle zones like ~200-600mm), and with good light, the 200-800 performs impressively. I will even go so far as to say I am really really pleased. I have several landscape images that I have taken with this lens that just make me really happy – images that I never could have taken with a narrower setup.
One of my favorite compositions from the trip to South Dakota’s Badland’s this year was taken with this lens. This was taken with my 200-800 on a tripod on my way back to my camp site. For folks who are interested, yes, I ran both noise reduction and sharpening on it. The image is NOT perfect, but for what it is…it is amazing. Did I mention that this image is uncropped?

Badlands Image
As I mentioned above, this lens definitely struggles in low light – not because it is actually struggling. i.e. the lens functions exactly as it was designed. It struggles because its design limitations come up against the limitations of the camera and sensor that it is paired to.
Yellowstone 2025 Photo


3. Value vs alternatives
Compared to using a prime lens or a shorter zoom plus extenders, this lens is just super accessible and the right price point. I looked long and hard at the 100-500 lens, which has the coveted “L” designation that the 200-800 does not. It boasts a slightly faster aperture and dual motors for focus. In today’s market, the 100-500 is selling for $2700 – about a 30% markup over the 200-800. For me, the reach of the 200-800 is just better, and for the slight difference in focus speed, I just felt that the 100-500 was just too limited...given the need for extenders to get the reach of the 200-800. Canon also sells a 600mm and 800mm fixed RF lens that I definitely considered – but while they are long, they are really (really) slow at F11. They are priced right though at under $1,100 each for each of these primes.

Unfortunately, the lenses you REALLY want are thousands of dollars more expensive. For example the RF 800 F5.6 sells upwards of $18,000 at B&H. The 600 F4 is a more modest $14,000. I think that if money was no object, I would probably pick up a 600 F4 and add a 1.4 Teleconverter for when I need the extra reach. I know I have been on a 'no tele-extenders' kick through much of this article, but every tool has a time and place. Canon allegedly has a 200-500L lens in the pipeline – I am sure that will also be grossly expensive…but if you have the scratch and can justify the expense, could you also buy one for me???? But you can see though, there is really no perfect option for all situations, unless you are so well heeled that you really can have the right lens for each situation.


Wolf Photo

4. Image stabilization
So…Canon claims that it has 5 ½ stops of image stabilization…which combined with the camera’s in-body stabilization that comes out to 7 ½ stops at the wide end (200mm). The additional benefit then decreases the further the lens is zoomed out - back to 5.5 stops at 800mm. In theory, that should help make up some of the difference in light gathering need in order to get sharper images at lower than recommended shutter speeds, but that is just a one way street. i.e Image Stabilization only helps you on the camera side of an image. If you are photographing a moving object (like a bird or bear or a wolf) the Image Stabilization means nothing and you really need to be shooting the right conditions for your subject matter.

Sad to say, I have always felt that Image Stabilization was the most over sold feature on a lens - but I could be wrong – and I never argue with success. Having said that, and yes, this is a bit of a brag - I know that I can walk into most scenarios with some colleagues and leave the situation with far more winners (usually taken with less expensive gear) than my comrades because my fundamentals are solid. While yes, the answer is “all of the above,” use every advantage you can, if you have only some much money and need glass with a certain reach….get the non IS lens and use a proper tripod.
Yellowstone 2024 Image of creek at sunrise waiting for wolves

5. Size, weight, handling
This is definitely not a tiny lens – in fact, it is as long as the entirety of my backpack. However, for those of us who come from large and heavy F2.8 telephoto lenses, it really isn’t THAT heavy - I will even go so far as to call it svelte!! The 200-800 comes in at about 4.5 pounds. As a comparison, my Sigma 120-300 F2.8 was over 7 pounds. That is pretty significant difference in weight. While I would not want to be hand holding this lens in low light (again, I never argue with other people’s success), I believe that it is hand holdable – particularly when the lens is not fully extended.

6. Durability
I have had zero problems with this lens. I have used it in a variety of conditions from low light and in rain. Having said that, I have read multiple reports on other websites (including Canon Rumors) that indicate that the 200-800 can actually split in two between the extending elements.
One Last Image

What to do to get the best from it:

[*]Use a fast shutter speed at longer focal lengths to combat shake. Remember the rule of 1/(focal length) as a a good starting point (with crop, etc.), so at 800mm that means pretty fast speeds, especially handheld Stabilization + support: Use a monopod or tripod when possible – or leaning against something for support. Good light: early morning / golden hour — when the light isn’t harsh and there’s enough to keep noise low even when aperture narrows Raise ISO intelligently and accept some trade off — modern sensors handle high ISO much better, and raw processing helps. I will even go so far to say that sensor noise is almost irrelevant at lower ISOs and even as far as ISO 3200 and 6400 (though dynamic range definitely takes a hit). The most important thing to do is to get the image sharp, everything else can be worked with. Keep subject distance in mind — atmospherics (heat haze, air clarity) matter more when subjects are far away, especially at max zoom.


Verdict — is it “worth it”?

In field terms: ABSOLUTELY YES, if you understand its limitations and align them with what and how you do your work. This lens is not a magic cure for every telephoto problem (fast action in low light, tight indoor work, etc.), but it extends the creative reach for many photographers in a way few zooms can. For someone wanting long reach, good sharpness, and acceptable trade-offs, this lens is a strong option. If your work lends itself to needing the fastest shutter speeds in low light, and you have the money to spend, you may have to consider more expensive alternatives.
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BetaArticles
09/15/25 04:59 PM
James shares his experience working in the field with the RF200-800 Zoom Lens.
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NWP Articles
09/04/25 08:51 PM
Like the article? Please share it. We are a small site and word of mouth is everything at a time when a few social media companies control pretty much everything. While I don't produce a ton of content, I like to think it is GOOD content.

If you are new to our website, please feel free to look around and read our many articles and artist showcase interviews.

http://www.nwpphotoforum.com/ubbthreads/ubbthreads.php?ubb=cfrm

If you like the article, please join our forum and I will send you surprisingly rare spam with new articles when I have something that I think is worth posting. You are also encouraged to join the Nature, Wildlife and Pet Photography Forum private Facebook Group.

Consider joining our photography group on Facebook, a very positive and supportive environment for people interested in Nature, Landscape and Wildlife Photography. Membership is as easy as answering 3 simple questions and agreeing to avoid controversial topics like religion and politics in the group.

Link to FB Group:
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Please remember that the text and all images in this article are (c) 2025, James Morrissey.
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NWP Articles
09/04/25 08:49 PM
[Linked Image]
Elk May Safely Graze, Last Light. Yes, I know it is supposed to be 'Sheep.'

[Linked Image]
Signal Mountain at Sunrise, Why is There NEVER Anyone There at Sunrise??

In preparation for my climb up the Grand with my friend, John, I decided to fly out a few days early and do 'the usual set' with someone who had never been to the West before. Nothing turns the 'usual set' into something new more quickly than when you get to be there with someone who has never seen them before. Not only do you get to seem like you really know stuff.......but there is a reason why so many of us turn on our radios from the songs of our childhood and blast them on repeat. Those best of hits are best of hits for a reason. That is how I feel about going to the Tetons. It catapults me back in time to my photographic awakening. In 1996, I went out there with my dad and my mind was blown by the scale of everything. The sky was huge. The mountains were huge. The animals were huge. I was tiny and insignificant and my eyes and brain was a sponge. It can be anxiety producing when you realize you really are not that important. The world will continue to spin if you are on it or not.

[Linked Image]
Taggert Lake Waterfall

[Linked Image]
Oxbow Bend at Sunset, Love that Purple...so Passionate.

As we get older routine becomes the order of the day. That's life. We have livings to make and many of us have spouses and/or children and other things that just need to be cared for and are long term projects. You focus on the things you need to focus on in order to have stuff. I can see how it is so easy to take things for granted. Our relationships. Our jobs. Our health. Everything becomes a given and just something to be maintained. Sometimes the very things that give life meaning becomes chores to be cared for. Essentially you wind up living for something else besides yourself, and while many people are ultimately able to find that transformational it takes a lot of emotional growth to find liberation in the finalities and restrictions of our day to day lives. I can see how we give short shrift to the many significant parts of our lives.

[Linked Image]
Jenny Lake at Sunrise

[Linked Image]
Grand off the Highway

So you ask...why do we all willingly get ourselves into these situations? Why do we recreate the same types of relationships over and over? Why do we allow ourselves to get sucked into systems that determine for us how we are to live our lives? Sigmund Freud, the godfather of psychoanalytic thought posited the concept of something called the "Repetition Compulsion." He believed that people tend to engage in the same sorts of behaviors and relationships over and over in order to gain mastery of past traumas and to find a sense of comfort and predictability. The reason for this urge is something that we are not always aware of - it is instinctual. Now, let's be clear - my trips to the Tetons are not sparked in any negativity. They are joyous, not painful.

[Linked Image]
Grand off the Highway - Take II

[Linked Image]
The Absarokas??? Oxbow Bend, the Wrong Direction at Sunset.... Oh My!! This is what I am referring to a Double Sunset...Two Amazing Images, just opposite directions.

So if I am admitting up front that my thesis is flawed, why am I continuing to wax whimsically about the subject as to why I have liked to go to the same places to photograph?? That is fair — but hang in there with me. All of this is actually really pertinent and not just the ravings of a madman as to why I keep going back to see those mountains. While the idea of the Repetition Compulsion was built out of finding ways of resolving trauma, the concept still illuminates something very profound in this use case: repetition can feel comforting, grounding and even transformative. I want to be able to say I have mastered it photographically. I love the sense of predictability and knowing what lies around the corner. I really have been there and done that, and nothing brings that front and center more than when you go with someone who has never been before. Ooohh. Full circle! LOL. Maybe that’s why Freud’s idea of ‘repetition compulsion’ sticks in my mind — his belief that we return to patterns to make sense of them.

[Linked Image]
Mount Moran at Sunset - Double Sunset, People!!

[Linked Image]
Sheep Mountain, During the Storm

This article is about finding ways to keep old things new and exciting. When you have a relationship (either real or metaphorical) you need to find ways to continuously make it something you have not seen before, even if you have seen it every day since last Tuesday. That was the original point of the climb up Grand Teton from the very beginning. I want to keep my relationship with the Tetons fresh and exciting - I want to know it in a way that I never knew it. But let's be honest...there are lots of ways to do that. You don't need to climb the mountain in order to find new ways to appreciate it. Smaller activities can yield just as great results. You can keep these relationships new by doing simple things - like injecting small doses of variety during the trip. While we stayed in the confines of the park, we tried to expand our senses and savor the more physical experiences of being there. For example, John and I photographed Grand from the highway trying to capture it at peak like from a 'new' vantage point for us. We hiked the easy back country areas. Yes. We also hiked UP the Grand to the best of our ability and while that was awesome what was amazing was not really the climb. The thing that was amazing was learning to conquer fear and my own body's limitations. Maybe that’s the real point: we don’t repeat to stay stuck, we repeat to grow. Each return gives us a chance to master something new — a mountain, a photograph, or even just ourselves. That is why I keep returning to the places that matter. Sometimes for comfort. Sometimes to challenge ourselves. Always to find something I didn’t notice the first time...
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NWP Articles
09/04/25 08:48 PM
Some patterns are worth repeating. Some mountains, like some moments, invite us back — not to relive, but to see them anew...

Link: http://www.nwpphotoforum.com/ubbthr...rowing-lessons-from-the-tetons#Post43997

[Linked Image]
Oxbow Bend at Sunset


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NWP Articles
08/20/25 03:55 AM
Like the article?

If you are new to our website, please feel free to look around and read our many articles and artist showcase interviews.

http://www.nwpphotoforum.com/ubbthreads/ubbthreads.php?ubb=cfrm

If you like the article, please join our forum and I will send you surprisingly rare spam with new articles when I have something that I think is worth posting. You are also encouraged to join the Nature, Wildlife and Pet Photography Forum private Facebook Group.

Consider joining our photography group on Facebook, a very positive and supportive environment for people interested in Nature, Landscape and Wildlife Photography. Membership is as easy as answering 3 simple questions and agreeing to avoid controversial topics like religion and politics in the group.

Link to FB Group:
https://www.facebook.com/groups/nwpphotoforum


Please remember that the text and all images in this article are (c) 2025, James Morrissey. The images listed as (c) John Ungereanu were licensed to NWPphotoForum as part of this article.
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NWP Articles
08/20/25 03:53 AM
I thought it would be cool to cap this article with some of the images that John took from the top of the Summit of Grand Teton. I cannot wait to get up there. Nice work, John.

[Linked Image]
Top of the Rock


[Linked Image]
Top of the Rock


[Linked Image]
Top of the Rock


[Linked Image]
Top of the Rock


[Linked Image]
Top of the Rock
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