A77II AF question

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dsquirrel
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A77II AF question
4 months ago

I was playing around with an A77II in the Sony store yesterday and the salesman confused the hell out of me. I was using the AF in the mode where you get to move the box around to select which part of the frame you want the camera to focus on, and then the salesman started telling me that on the phase array sensor, the pixels where larger in the middle and were f2.8.

I asked him a few other questions, but he kept repeating that, and then went to the computer to look it up, at which point I left. There was a bit of a language barrier, so I figured I would consult the AF junkies on DP.

Could anyone clarify what he was talking about? Does pixel size vary across the sensor?

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 dsquirrel's gear list:dsquirrel's gear list
Sony SLT-A65 Sony 50mm F1.4 Sony DT 35mm F1.8 SAM Sigma 10-20mm F3.5 EX DC HSM Sigma 70-300mm F4-5.6 DG Macro
Sony SLT-A77
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