Canon EF 400mm f/2.8L IS III USM

I think you just change the name of the thread so that it includes all variants (EF/RF I/II/III). If you can't, i'm sure the mods have the power :D
I saw that I actually can just press the edit button. But I thought I'd move the conversation to the Forum Talk forum, since we should probably have a consistent guideline for all lenses, not just the 400mm f/2.8 family :). The link is here:

 
I thought I would explain why it is better to put the different versions of a lens in their own thread, especially here, in the Lens Sample Archive. People will come here not only to enjoy the photographs but more specifically to look for differences between the different versions, trying to decide if it is worth the upgrade. It wouldn‘t be helpful to have them all in one thread without it always being clear which version was used. That’s why it is better to have each lens in its own thread. :)
 
I thought I would explain why it is better to put the different versions of a lens in their own thread, especially here, in the Lens Sample Archive. People will come here not only to enjoy the photographs but more specifically to look for differences between the different versions, trying to decide if it is worth the upgrade. It wouldn‘t be helpful to have them all in one thread without it always being clear which version was used. That’s why it is better to have each lens in its own thread. :)
Hi Levina, generally I agree with your approach. However, this specific linage of lenses are unusual. All three are pretty close to perfection wide open. There are no observable photographic differences between them from either a real world perspective or from MFT charts. The MKII is considered the sharpest, but we are really splitting hairs here. The differences between them are the weight and balance. Sure an extra stop of IS and newer AF algorythms are always welcome. But optically, there is nothing much to seperate them from each other, certainly nothing observable in the size of frame that we post here. In fact proably not observable even at 100%.
If we ant to split these out into four thread, then so be it. We just won't get a lot of posts because we are spreading our butter very thinly. These lenses are very rare, especially thre RF and EF mkIII.
I'm more than happy to start a new thread and move my posts from the MkIII thread to the mkII thread.
 
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