CC: In the OM series, the shutter speed dial is set up as a ring on the camera mount. I don't think this was linked to the effort to make the camera smaller, so how did it come about?
YM: If you look at the camera's interior structure, the area around the film advance lever is crammed with parts. Choosing the shutter speed, advancing the film, pressing the shutter button, the main functions are concentrated here. It's like the camera's capital city. To improve this situation, I thought about redistributing some functions, rather like relocating some functions of the capital city to outside Tokyo has been discussed. The space under the mirror was completely empty: "Good, I'll bring the main functions down here." But the film advance lever and the shutter button can't be shifted, because of the manual film advance. The shutter speed dial is what can be moved, so let's relocate the shutter speed governor under the mirror, I thought. I could see that if we did that, the camera would be smaller, but there was no such camera. The shutter dial ends up on the bottom [laughs]. The mechanics could relocate the governor, but how to control it? Using a lot of gears to move it, the shutter drive is forced back on top. That doesn't make it small. I was baffled. Then I put a big ring around the mount to turn the speed governor underneath. At the beginning, everyone around me said I was crazy [laughs]. In my style of photography, while supporting the lens you can focus, check the depth of field, and change the shutter speed. That's quite an improvement I think.