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Size matters

If Sony has truly succeeded in cramming the power of a pro action dSLR into the body roughly the size of its A7 series of mirrorless cameras, that's a big deal. Smaller cameras mean smaller lenses, which matters when you're using a huge telephoto lens. Sony also brings in-body image stabilization, which is a lot more practical than the optical stabilization in the top dSLRs.

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Photo by: Lori Grunin/CNET

Compact

It remains pretty compact for everything it does.

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Photo by: Lori Grunin/CNET

Another view

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Photo by: Lori Grunin/CNET

Fast EVF

One of the big problems with shooting action through an EVF is that you're always seeing what just happened rather than being able to see in real time the way you can with an optical viewfinder. The A9's refreshes at 60fps -- it can go as high as 120fps -- at high shutter speeds, which the company claims is sufficiently fast to eliminate that weakness. Resolution is 3.7 million dots.

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Photo by: Lori Grunin/CNET

Dual SD card slots

Frankly, all the A series cameras should have dual slots. Only one of the slots supports UHS-II, though, which may be a drawback. It's ironic that Sony, which was the driving force behind the XQD standard, still doesn't use it. (It still supports Memory Stick, though!)

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Photo by: Lori Grunin/CNET

Exposure compensation

Photographers used to the electronic implementation for exposure compensation may not really want an analog dial. More important, not having a top status display might be a sticking point for some, though you can see the same settings in the viewfinder.

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Photo by: Lori Grunin/CNET

Slow motion

Like the other cameras that used stacked CMOS sensors, the A9 has built-in slow motion (the S&Q on the mode dial). It doesn't reach the frame rates that the smaller-sensor models do, but it can do from 1 to 120fps in HD resolution for up to 60x faster or 5x slower. In PAL, it's 100fps at 50x faster or 4x slower.

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Photo by: Lori Grunin/CNET

Drive dial

In a big departure from the design of the A7 series, Sony adds lockable dials for choosing drive mode and focus mode (bottom).

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Photo by: Lori Grunin/CNET

Thicker

The A9 is a bit thicker than the A7 series.

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Photo by: Lori Grunin/CNET

Door latch

Like other pro models, Sony has put a latch on the door for the card slots.

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Photo by: Lori Grunin/CNET

Joystick

Sony brought the joystick from the A-mount full-frame cameras to the A9 for easier manipulation.

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Photo by: Lori Grunin/CNET

Tilting LCD

The 3-inch tilting touchscreen LCD is surprisingly low resolution -- 1.4m dots. That's the same as the A7 series, though.

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Photo by: Lori Grunin/CNET

Missed connections

The A9 really should have had a USB-C connector for tethered shooting and for high-speed in-camera battery charging.

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Photo by: Lori Grunin/CNET

Ethernet

It's the first Sony to include Ethernet, a staple pro feature for fast file transfer and multicamera synchronization.

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Photo by: Lori Grunin/CNET

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