End of Megapixel wars and EF-S buying decisions

Started Feb 23, 2006 | Discussions thread
stephenmelvin Veteran Member • Posts: 4,547
Not just memory

Jeff Varszegi wrote:

... and I've thought it through before. Of course, they could add
extra-fast buffer to a camera body for much cheaper than what the
sensor would cost. Memory is cheap. As a matter of fact, they
even speed up the frame rate by going to a split-buffer approach--
striping an image across multiple buffers simultaneously. They
could up the frame rate this way using lower-cost memory.

The larger issue, I think, is getting the data off the chip and into the buffer. Remember what a big deal it was that the 20d's sensor had a four channel output? And all that data must be processed, even if it's RAW, because you have things like NR and bad pixel mapping. Everything has to be much faster, and a camera has limited internal space.

A 55mp file opens up to a 165 meg 8 bit TIFF. How many of those can your computer push around per second?

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