EM-1 uses Panasonic sensor per Chipworks

Started Feb 8, 2014 | Discussions thread
Anders W Forum Pro • Posts: 21,468
Re: More Interesting .....

Eric Nepean wrote:

Anders W wrote:

exdeejjjaaaa wrote:

Eric Nepean wrote:

than Panasonic selling to Olympus is the fact that we now have Panasonic manufacturing a sensor with phase detect capability.

any sensor can have PDAF - only Canon does that in silicone - all others just play with CFA on top of the sensor...

In a sense, Canon does it by means of sensor toppings too. They have just been smart enough to realize that if, in addition, you cut each quadratic pixels in two rectangular ones, you can get PDAF functionality from every pixel without losing anything else.

Good observation. But from the Chipworks report abstract I see the following:

The Olympus OM-D EM-1 contains a Panasonic 34231 (MN34230 die markings) CMOS Image Sensor with on-chip phase detection pixel array

It sounds like Olympus have also implemented PDAF in silicon. I wonder why?

Not the silicon, I would think. It's just a matter of what's on top of the silicon. All it takes to make an ordinary pixel into a PDAF sensor is to restrict the angle from which photons can enter it and it doesn't take any change to the silicon to accomplish that. The special thing about the Canon 70D sensor is that it makes all the pixels serve as both ordinary pixels and PDAF sensors. With the solution commonly used, e.g., on the E-M1, it is either or, not both and.

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