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AF point patterns?

  • Thread starter Thread starter gerga
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Hi all,

Does anyone have any idea what the reasoning has been for the various AF focus point patterns employed on various iterations of Canon SLRs/DSLRs over the years? Having recently made the jump from a 350D to a 5D3, and having played with a friend's 7D, I've been interested in the employment of horizontal/vertical cross arrangements, diagonal arrays of points, to the orthogonal grid used on the 5D3. Are there particular pros/cons to the orientation of the array (if we could assume density, quality and accuracy of points being equal)...?
 
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