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Canon EF 400mm f/2.8L IS III USM
- Thread starter PinholeR5
- Start date
gmcphotographics
Member
Maybe we should open this thread up to the users of the mkII version as well?
gmcphotographics
Member
gmcphotographics
Member
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
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PinholeR5
Member
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 familyI 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
. The link is here:
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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.
gmcphotographics
Member
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%.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.
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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PinholeR5
Member
With the RF 1.4x extender using a hacked adapter.
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PinholeR5
Member
A couple more with the RF 1.4x.
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PinholeR5
Member
Thanks.
Yes, I did file off the plastic material from the inside of the adapter. It is a commlite control ring adapter (CM-EF-EOSR ARC). I had read somewhere it was the easiest to hack. The control ring doesn't work (It didn't work before I hacked it) and the camera doesn't know there is a TC, so doesn't update the f-stop accordingly. There is also the issue that there aren't any correction profiles for this combination, since it isn't officially supported. Still, I think I like the results with the RF TCs vs the EF III ones.
I've been meaning to hack one of the Canon Control Ring adapters, now that I have accumlated a few, to see if it would improve the communication with the camera and get the Control Ring functionality back.
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I wouldn't do that! I tried with the basic Canon adapter, but all to quickly I filed into the electronics before the hole was big enough, so I ended up with a broken Canon adapter. The Commlite is wider, with a larger hole so you don't need to file off as much, so it works. Unless the Canon control ring adapters are much wider than the basic ones, I really wouldn't try it.
gmcphotographics
Member
What is the reason you want to use the RF 1.4x tc? According to the MFT charts, the MkIII EF versions are slightly sharper.
