Thank you for that. This case makes it obvious that he's prefering form over function.
Ive's M9 has removed the unique and tangible camera controls from the camara's top that are important for the photographer and replaced them with uniform buttons (all images (c) by Leica):
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While you could easily find and control the original M9's shutter speed without looking at the camera Ive's improvement removed the haptic feedback with flat wheels.
Then he removed the flash hotshoe, presumably because it destroyed the slick looks. And heck, who needs an external flash when taking pictures (remember the DVD drive in the iMac) ?
The situation on the back is similiar:
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Leica's design has a four-wheel control with elevated buttons that provide haptic feedback, while Ive's version has a less-usable flat wheel. Furthermore the more important menu button is well-placed on the top-right corner of the display. Ive hides this button somewhere within 5 other buttons (again, they're flat). So in order to open the menu you will have to look at the camera's back.
Furthermore he removed the ocular's hood that reduces sun reflexions. But ok, it's more flat now.
Then he removed the zoom wheel from the bottom right place (where you usually have your thumb when taking a picture because the trigger finger is - well at the trigger) and replaced them with two flat buttons (again, no haptic feedback). It's clear that controlling the zoom with a wheel is much better than by pressing two buttons (faster, more precise, easier to find, more convenient).
So what we have here is the iMac of photography. It's less usable but slick.
(I'd like to see if he changed the menus and the other UI components to plain text as well ;-))