"To work with the ultrafast shutter required for the E-1's successor, we needed a new mirror mechanism, one that was completely redesigned right down to its layout.
"By simplifying the configuration of the drive mechanisms, we were able to increase accuracy and reduce transmission loss.
"The mirror box is made of carbon resin material with high rigidity.
"The viewfinder magnification was increased by using a larger prism, and the AF coverage rate was improved by increasing the size of the AF sub-mirror.
"What we have done is not merely to reduce body size, but to emphasize the ease of viewing and operation, as well as the durability even when the body size is reduced.
"Trying to squeeze multiple advanced functions in a simple configuration in a compact space was truly a series of hardships for us," remembers Mr.Iwase with a bitter smile.
"You also have to consider that the captured image will be blurred if the shock of the shutter drive is transmitted to the image sensor.
"To prevent this, we had to provide the mirror box unit, image sensor unit and shutter unit with different paths so as not to transmit the shock of the shutter drive to the image sensor."

"Traditionally, E-Series cameras have had a reputation for quiet operation and smooth action because they are based on the Four Thirds System standard, which features a reduced mirror size.
"We wanted to give an even higher-class feeling to the shutter sound of the E-1's successor, so we studied the shutter sounds carefully and analyzed the frequencies and sound pressure levels.
"Actually, I once had been in charge of design of the mechanical parts of the micro cassette recorder. I would like to make the most of my previous experience for the shutter sound of the E-1's successor.
"High accuracy is a matter of course for a camera that is the flagship.
Moreover, we also tried to improve the sensual quality, such as the nature, tone and reverberation of the sounds.
Look a little self-conscious, Mr. Iwase added "When the E-1's successor arrives in stores, we hope people will listen to how it sounds. We worried about it a lot, and we think we've come up with something that will make people feel good when they operate it."