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Number five: This is a great one. A whole new camera system built into iPhone 4.
第五点：这一点真的很棒。那就是iPhone 4内置的全新摄像系统。
Now everybody loves to talk about things that are very tangible when it comes to photography, like megapixels.
现在每个人都喜欢谈论关于摄像的非常表象的东西，比如百万像素。
But we tend to ask the question: how do we make better pictures?
但我们倾向于问这样一个问题：我们怎样才能拍出更好的照片？
And there are different things. Megapixels are nice but what cellphone cameras are really about is capturing photons,
这是不同的东西。百万像素是不错，但手机摄像头真正的功能是捕捉光子，
because the cameras are so small, the sensors are so small, the lenses are so small that it's all about capturing photons and low-light photography.
因为摄像头很小，传感器很小，镜头也很小，所以它只能捕捉光子和弱光摄像。
So what we've done is we've gone from a 3-megapixel to a 5-megapixel sensor.
所以我们所做的就是把一个300万像素的传感器变成了500万像素的。
But we're using something that has been shipping for a while in larger cameras
但我们使用的是一种已经在更大的相机上销售了一段时间的东西，
but it's fairly new to smartphones and that is what's called a backside illuminated sensor.
不过它对智能手机来说是相当新的，这就是所谓的背面照明传感器。
It's a way of getting a lot more photons to the sensor by getting some of the wiring and stuff out of the way.
这是一种让更多光子到达传感器的方法，通过把一些布线和其他东西去除。
In addition to that, when most people increase their megapixels they make those pixels smaller.
除此之外，当大多数厂商增加他们的百万像素时，他们会使单位像素更小。
When you make pixels smaller they capture less photons.
像素越小，捕获的光子就越少。
What we've done is we've gone from 3 megapixels to 5 megapixels we've kept the pixels the same size, 1.75 microns.
我们所做的是从300万像素到500万像素，我们保持了单个像素的感应不变，1.75微米。
And so they don't capture less photons per pixel and we have more pixels.
所以单个像素感应头捕获的光子并未减少，同时我们又有了更多的像素。
We've got a 5X digital zoom built into the camera app.
我们在相机应用中内置了5倍的数码变焦。
Of course, what we pioneered tap to focus and we've got an LED flash built in.
当然还有我们首创的“轻点对焦”，还内置了一个LED闪光灯。
And the pictures that we're taking off this are pretty remarkable.
用它拍下来的照片，效果简直惊人。
Of course, you can do portrait and landscape, you can see the digital zoom right there.
你可以横拍，可以竖拍，可以看到这里的数字变焦。
And these are pictures that are taken right off the iPhone 4,
这些照片是iPhone 4直接拍下来的，
they haven't been touched in any way and it shows you -- it shows you what kind of quality we're able to get.
没有经过任何方式的处理，向你展示了我们能得到什么样质量的照片。
Again, these are completely unretouched.
再说一次，这些都是完全未经处理的。
