EOS R1: One camera to rule them all

Don't know about consensus, but both Canon and physics agree that IBIS is of very limited benefit at long focal lengths. For example, the RF 100-400mm at 400mm delivers 5.5 stops of stabilization from the lens and gains a whopping 0.5 stops with an IBIS body for a total of 6 stops of stabilization. Maybe @CanonGrunt is experiencing psychosomatic benefit.
Placebo effect.
 
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Afaik the stabilisation effect is smaller at macro distance. If You used the lens only for macro, this might have affected You experience.
Right, the effect is even less at short distances, but still very limited at infinity.
What I know is that I'm interested in an RF 180-200 only if it comes with optical stabilisation.
 
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Don't know about consensus, but both Canon and physics agree that IBIS is of very limited benefit at long focal lengths. For example, the RF 100-400mm at 400mm delivers 5.5 stops of stabilization from the lens and gains a whopping 0.5 stops with an IBIS body for a total of 6 stops of stabilization. Maybe @CanonGrunt is experiencing psychosomatic benefit.
No idea. Maybe it’s other factors on an R1. But I definitely get more use out of it on my R1 than my 1D X bodies. My favorite EF is the 180mm macro. That seems to have a very appreciable effect. But I might be crazy. May all I needed to take better pictures was a placebo… lol
 
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Afaik the stabilisation effect is smaller at macro distance. If You used the lens only for macro, this might have affected You experience.
I use that lens at a zoo a lot, but from a distance. I feel like i see a good effect. But maybe it’s just other aspects of the R1 are just better and faster. Or a combo… either way i love that lens.
 
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Right, the effect is even less at short distances, but still very limited at infinity.
What I know is that I'm interested in an RF 180-200 only if it comes with optical stabilisation.
The old Sigma 180mm f/2.8 macro is optically very good and it has pretty decent IS (see Imaging Resource review below). It is a heavy beast, though. The 150mm is also quite good and substantially lighter, but not quite as sharp in the center at f/2.8. In fact, the 150 is sharper in the periphery than in the center when wide open. I have both and have found them to be very useful.



 
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The old Sigma 180mm f/2.8 macro is optically very good and it has pretty decent IS (see Imaging Resource review below). It is a heavy beast, though. The 150mm is also quite good and substantially lighter, but not quite as sharp in the center at f/2.8. In fact, the 150 is sharper in the periphery than in the center when wide open. I have both and have found them to be very useful.



My copy of the 150OS and Sigma 1.4x work very well together and the combination is still impressively sharp. But the OS isn't very useable (for me), especially when you have IBIS, so I've relegated it to the R8.

I'm looking forward to a modern 180-ish 1:1 macro for RF, having IS is a strong preference, but I'd take a fast focussing Sigma RF without IS/OS if it's lighter than my EF180L.
 
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My copy of the 150OS and Sigma 1.4x work very well together and the combination is still impressively sharp. But the OS isn't very useable (for me), especially when you have IBIS, so I've relegated it to the R8.

I'm looking forward to a modern 180-ish 1:1 macro for RF, having IS is a strong preference, but I'd take a fast focussing Sigma RF without IS/OS if it's lighter than my EF180L.
Sigma----Macro-----Lighter :ROFLMAO: . That would be revolutionary.
 
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