I thought I would post this here as it is essentially my review of the 200-800. As it got a bit long, I didn't want to leave it in the image gallery.
I have now shot about 1500 to 2k images with this lens on the R5. I've shot in snow, rain, late afternoon sun, and now mid-morning light.
A quick conclusion....but for what it is, a non-"L" lens that goes out to 800 mm and costs less than $2k USD,, it is phenomenal. Great job on Canon's behalf for releasing this lens. I will absolutely be recommending this lens to people. I really expect this to end up being loved by enthusiast birders, photographers that need reach, and maybe do not have budget for a "Big White."
If that is you....perhaps it is best to get this lens and stop reading.
I think my initial concerns were accurate. Back when this was announced I debated pre-ordering with the general thought being that I would absolutely love a lens in this range, I could likely get used to f/9, but I suspected I would have wanted Canon invested a bit more into it and made it a $3-4k lens. That pretty much holds.
Many great photos will be taken with this lens, I have no doubt. I am pleased with a number of mine. Some I included just to give people examples, but some, I do really like.
The issues, IMO:
- Autofocus: This lens really needs light. Today at ~EV 14-15, it really did well. Not perfect, there were seagulls flying by that it didn't pick up. But on the birds in trees in good light and even in some shadow, long stretches of where the hit rate was great. No complaints. Probably >90%. EV 13, I found 68% hit rate. While I didn't calculate, in the snowstorm, at EV 10-11, it was pretty bad. There were entire series of me trying to photograph a bird, stretches of ~20 shots, without a single one in focus. Then, I would hit a good patch and I'd got the images that I posted. But f/9 seems to definitely be affecting AF. While I notice a dip with light using my other lenses...not like this.
- IQ. Not to get all "Zeissy" on people...but "micro-contrast".....this lens has none. Given enough light, this lens will take good, very good and maybe even a few excellent images. But those images where you feel that there is detail within the detail. Where you pixel-peep and, at least on my 2560x1440 27" display, the image still looks like a flawless picture. Nope, haven't seen a one of those using this lens. You go to 100% on these pictures and you see some issues, even in good light. For reasonable sized output, that will be fine. And sure, perhaps Topaz or another recent software will fix this, but I enjoy photography...post-processing, not as much.
- Nitpicks....The zoom ring isn't bad, but Canon does make lenses with much better zoom rings. Just needs effort when you want it to be easier. The foot is both a nice brace, helps while hand holding, but I would want it to be removable. As others have mentioned.
To get back to the good side, out of my collection of lenses, when needing reach out to 800 mm, only the 500 mm II provided better IQ while framing a small bird's (Junco) head at the same distance. Today, I was standing around with a group of other photographers with different gear (Oly, Nikon, Sony...). They were griping about different things, and, under this mornings conditions, I really didn't have any issues. Having 800 mm, I still cropped most of my images, but a few, in particular Today's finches, are mostly if not entirely uncropped. It was great to sit near the tree, let them work towards me, and use the entire frame to take a picture of a small bird.
So, I'll finish off with I consider to be the pros:
- Zoom range...that is why we are even here, right? Excellent industry leading zoom range.
- IQ is actually very good. It is not "Big White" good. But you do not have Big White size, weight, or money. IQ is great for an 800 mm, <$2k lens.
- If you need reach, then this was the second best out of my options to get reach.
- Ability to zoom. This is great. Even today, I saw an eagle getting ready to fly, I quickly gave myself a bit more room. I do not see going from 200-800 often but going from 800 to 600 is great. Then occasionally to less, if needed.
- The AF was good....in good light.
- The size/weight were such I handheld all day today.
- Big Whites draw attention. This lens will draw much less, if any at all. This can be important.
I do not have a 100-500 to compare this to. This process and listening to others have made me consider that lens more and more. I am impressed by the flexibility, superior 100-500, smaller/lighter, and comparatively as good out to 700 mm are all appealing. I actually might sell my 150-600S and 100-400 II and pick up the 100-500. But, I have never liked the fact that you can't collapse the 100-500 with a TC inserted. Perhaps this is a non-issue to most, but I use these lenses in a lot of conditions. To me, that means I am walking around with it extended, which I don't like, or I am frequently taking the extender on/off, which I do not like. Each person's mileage on this may vary, but I am still a bit hung up on that, which is a plus for keeping the RF 200-800.
So, if you are a photographer that wants focal length out to 800 mm, wants the zoom functionality, but are not likely to spend for a Big White. Or, if you have a Big White and want a smaller/lighter, more discrete option and want the zoom functionality....This is a great option. Just understand, there is no perfect lens, especially an 800 mm lens for less than $2k. The biggest trade off, IMO, was AF in lower light.