http://www.sonyalpharumors.com/sony-interview-and-a-good-news-they-are-working-on-uncompressed-raw/에 올라왔군요.현재 작업중이고 펌웨어 업데이트를 통해 간단히 가능하다고 합니다.

원문입니다:

Imaging Resource interviewed Sony engineer and manager Kimio Maki. The main talk was the new 42MP sensor and here are some key answers:

1) Why 42MP: 42-megapixel was the best pixel size to realize 4K movies. Super 35mm gives the best picture quality, from oversampling 15 megapixels down to the eight-megapixel 4K size. The picture quality is better than a professional video camera.

2) Noise improvement: in terms of ISO, this sensor’s sensitivity is better than 36-megapixel chips. The A7R Mark II has better noise performance; better than the A7R.

3) Why not 50MP: But 42 (MP) is not a good word. But actually, the engineers said “if you prefer 50, you have to lose sensitivity”. Of course 50 [would] give better resolution, and 45 would be more impressive, but it wouldn’t be perfectly balanced.

4) Advantages of backside illuminated sensors: in order to realize this kind of sensitivity, we have to prefer backside-illuminated. That’s the first priority, to gather lots of light, more light, effectively. The other decision was in the wiring layers; we used to use the aluminum, but aluminum is not good enough to transfer the data faster. Therefore we change the material from the aluminum to the copper to make it faster. [Ed. Note: Copper is more conductive than aluminum, so there’s less resistance in the circuit lines on the chip, meaning signals can propagate faster.] Therefore, then we could get a faster transition from the light to an electrical signal.

5) Uncompressed RAW: Sony RAW is compressed, not uncompressed. But if we’re getting a lot of requests for it, we should make such a kind of no-compression raw. We recognize the customer’s requirement, and actually we are working on it. And yes Sony could provide that via simple firmware upgrade!

6) Hybrid Autofocus: in terms of autofocus, we are using a hybrid focus, so first we use the phase-detection focus to get close to the object. Then near the object, we start to use contrast AF to get a clear peak. Then we adjust the focus. Then in order to make very precise focus (because 42-megapixel means very very small pixels), and also the focusing point could be a very small one, therefore we phase-detection together with contrast AF, contrast focus.

5)소니 RAW는 비압축이 아니라 압축된 것이다.그러나 우리는 이것에 대해 많은 요청을 받으면 그러한 비압축 RAW를 만들 것이다.우리는 고객의 요구를 인식하고 있으며 실제로 우리는 그것을 작업하고 있다.그렇습니다.소니는 간단한 펌웨어 업그레이드를 통해 비압축 RAW를 제공할 수 있다.