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Messages - Kufat

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EOS Bodies / Re: EOS 7D Mark II Information [CR2]
« on: August 03, 2013, 11:23:58 AM »
If they put in wifi, there's no reason not to use the same radio as an RF Speedlite controller. (Both use the 2.4 GHz band.) Might require either a custom IC or an unusually flexible wifi chipset, but should be doable at reasonably low cost.

EOS Bodies / Re: EOS 70D a New Benchmark in ISO Performance?
« on: July 01, 2013, 10:58:52 AM »
Is the lack of AFMA confirmed or are we holding out some slight hope for it to make a surprise re-appearance?

Let's call this lens's off white, it's got a big foot, and while everybody's heard of it, very few have actually SEEN it.


I have to believe they already use Circular Buffers, but they may not have been very good at it.  This brings the other elements into play.  At the time they may have prioritized other tasks thinking they had the time; or yes, it could have been crappy programming.  The hack guys may have a better opinion of the quality of Canon's embedded programming.  It could also be an improvement in their proprietary OS that gave them more time/space headroom.

The question on my mind is whether the technique they used here could be used to squeeze one or two more photos out of a RAW burst on the T2i/T3i/etc.  Not that they'd bother backporting it even if it could...

I don't understand how a jump from 15 to 26 can be done with a firmware update either. Good question.

A friend and I brainstormed a few possibilities:
  • They had previously used the available RAM as a simple linear buffer, but changed their algorithm to use it as a circular buffer, allowing more images to be taken after the first was written to the card.
  • There was already a circular buffer, but the write order was optimized.
  • A redundant write verification step may have been disabled.
  • A delay that only became evident when the camera was used with higher-speed cards than were available at launch may have been discovered and eliminated.  (If you need a very fast card to get 26; otherwise, it's not this one.)
  • Someone did something really boneheaded in the original coding and it slowed everything down.

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