FrankenCanon

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Mar 20, 2013
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Out of curiosity, can we retrofit a 70D sensor into a 7D camera body?

And, if this is possible, can we also put 2 digic 5+ chips into a 7D body as well?

Why or why not to each of the above 2 questions?
 
Not likely. Very unlikely, even if you have a great electronics lab at your disposal. Couple of reasons:

1) Each chip has it's own specific pad layout, although if it's the same type (say, 60D sensor vs 7D sensor, they're basically the same) they might have the same layout you could, theoretically, switch them out.
2) The 70D is different MPx, and likely has it's own quirks that make it different enough from the one in the 7D as to have some issues.
3) The 7D has DIGIC-4. Very likely a different pin layout than the DIGIC-5/5+, and also the firmware likely won't run on the DIGIC-5 as it is optimized for the 4, although probably much of the code is similar, it isn't compiled for it. Plus, the firmware knows about the 7D sensor, it has no clue about the 70D sensor. It's not like plugging in a different video card or a new CPU into your computer. They are inherently different, because they are so highly integrated.
4) You probably would need a custom PCB to fit all those components together, if you even could, and it'd likely cost as much, or more likely a lot more than a theoretical 7D2 which may contain it all already, or maybe more.
 
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What he said.

Pretty much you'd need to swap out all/most electronics, plus some mechanical modifications to accommodate the different ones. There's lot of flex-cables which makes it slightly easier than just PCBs, but still not really feasible.

So in theory it could be just possible, but not within reasonable effort.
 
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