[Klaus]

Well, the mirrorless gang has to design telecentric lensed - otherwise things get messy. And that comes at a cost.

The Canon lens is pretty much unique anyway.

[toni-a]

I read your comments and can't wait to put my hands on my sample

I should hopefully have it by tomorrow.....

[Brightcolours]

Well, the mirrorless gang has to design telecentric lensed - otherwise things get messy. And that comes at a cost.

The Canon lens is pretty much unique anyway.

Is that reversed telecentric? On a DSLR you have to do that too, don't you, with short focal lengths (due to bigger flange distance)?

The Canon has 14 elements, the Sony 10:





 

By the way, the Canon EF-M 11-22mm IS STM is a pretty good wide angle zoom too, and pretty cheap too.

[Klaus]

Well, due to the longer distance from mount to sensor, the issue is eased on DSLRs to start with.

Now if you ask me which ultra-wide lens has a telecentric design I couldn't tell honestly. :-)