How is the OMD so fast

Started Jan 7, 2013 | Discussions thread
s_grins Forum Pro • Posts: 11,864
Re: How is the OMD so fast

duartix wrote:

s_grins wrote:

I totally agree! I think Oly use high end RISC processors to achieve this fabulous results. But I believe M43 systems fast focusing has something to do with lenses too. IMO, all M43 lenses have high contrast and resolution just because they they need high contrast and resolution for fast focusing - this is very essence of CDAF where (C) stands for contrast.

CD-AF is cheap. Too cheap.

All you have to do is apply a first order operation to a matrix, very similar to a contrast enhancement, and in the end get the total of it's elements. Remember that almost any camera does this for recording video, and yet they manage they do this at an overkill resolution for contrast detection.

The fabulous result isn't in the RISC processors, it's in the sensor readout speed, that allows them to take a LOT of contrast measures per second.

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Duarte Bruno

I agree with you, Duarte. Firstly you apply order operation to a matrix, and at the end get the total of it's elements. But there seems to be something between beginning and the end. The smaller this something, the faster is focusing.

Well, and I'd like to learn more what is responsible for increasing this readout speed. As far is I understand, you have eliminated processor, so what is left?

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