Fabus Photos
Active member
That's freaking gorgeous ?In all reality the 100-500L is an even slower lens once you get the TC involved and is only slightly faster at the shorter focal lengths so unless you’re able to really get close you might well still be frustrated.I think the 200-800 is very good for optimal light conditions. As soon as it gets darker, it becomes difficult to compensate even with a more sensitive sensor like the 24.6 Mp of the R6 or R8.Either way you’re spending a lot more money. What issues are you having with your 200-800 and R8? I’ve been very pleased with the exact same setup. I actually find the AF of the R6 noticeably better than the R5 though you do get more MPs. The RF 800mm f/11 has very similar detail levels but with lower contrast so I’m not sure you’d be any happier with that other than it being less expensive.Hello, I have the RF 200-800mm with my R8, and I don't like it. At 800 F9 it's smooth, I'm pretty sure the RF800 F11 is better.For me it's also simple - if you need or want 800mm then 200-800 is goodWell, with 1.4x, you can only get to 700mm. The 800 prime cannot zoom out to 700mm. Granted you can compare at 800mm using 2x extender, but people who use 2x usually want to shoot at 1000mm which the prime again cannot dobut someone with both lens could compare the lens at the same aperture, same focal length and same camera (with extender on 100-500)That's also what you get in real world when using them. We already know going into this discussion that the focal lengths will not match. In such cases, I often look at what IQ I can get wide open and then take it from there. You can always match the aperture in the tool, stopping down only improves the 100-500 marginallybut that's comparing the lens at different apertures and different focal lengthsNo personal experience, as I opted to add 1.4x to my 100-500 rather than add the 800 f11 to my kit, so I only know half the storyPhil Katch has performed a comparison of these three lenses (). His finding is that the RF 800mm f11 is the sharpest of the group.
Granted, the zooms are much, much, more flexible in real world use.
My question is not whether one or the other is the most useful, but at the same reach, is the RF 800mm f11 really as sharp or sharper ? If so, then it's an amazing value.
Any personal experience to share regarding sharpness ?
But this comparison did help me to make my choice: https://www.the-digital-picture.com...ensComp=1513&CameraComp=0&FLIComp=0&APIComp=0
From what it looks to me, the zoom combo is sharper. It also has more CA, but that's easily corrected
Having said that, these lenses are so good, I would choose based on usability. Afterall, it doesn't matter how sharp if you leave it at home
You can already compare at same aperture in the tool as I mentioned before
For me, it was simple. I was considering 1.4x, so the linked tool had all I needed to see.
I'm thinking of switching to 100-500 L with TC 1.4, from what we can see, it's the best combo in this price range.
Or I take an R5, which we find works well, with an RF 800 F11, I'm almost sure that it will do a better job than the R8 + 200-800 combo.
In any case I found an R5 reconditioned by Canon, with a brand new sensor and mechanical shutter.
As for the lens, I'm thinking of going with either the 100-500 L or possibly a third-party brand like the Sigma 60-600 sport which is an excellent lens.
I’d also be careful with the Sigma 60-600 on the R5 as the R5 doesn’t always do so well with adapted third party lenses. I had issues with my 150-600C on the R5 that eventually caused me to replace it. I first went for the 100-500C but was struggling because I so frequently wanted more focal length. I would have been using the 1.4x all the time and honestly at that point I just decided that the money was better spent on a 500mm f/4 which does much better in the low-lighting. I used the 800mm f/11 for a while as my lightweight telephoto lens and really like it but when the RF 200-800 finally appeared it turned out to be the replacement for my Sigma 150-600 that I always wanted.
Here’s a shot I took from a recent trip to Brazil using the 200-800 on the R7 in fairly low light:
Of course anyone who knows your photography, wouldn't expect anything elsethis was in very dim lighting under the canopy
As was this
Obviously you need to have fairly good technique to get results like this but they certainly are possible.
One thing comes to mind though, I often "cheat" with low light shots, by warming up the color balance, to the point that nobody knows they were taken in low light. Not saying this is right or wrong, it's just something I've had a hard time breaking away from....




