Importance of pop up flash; Nikon gets it right!

The pop up flash isn't an amateur feature it's an essential tool that aids creativity not because it's a flash but because it's a built in wireless flash controller.

Quote from D600 review:

"The D600 has a built-in flash which is released using this mechanical button. The flash has a guide number of 12 meters at ISO 100 and it can also act as a wireless 'commander' for up to two groups of Nikon Speedlight flashguns."

Can Sony's flagship A99 do this ? No

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Photography is fun!