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Viewfinder Blackout Sony A9 vs Canon 1Dx vs Nikon D5

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Let's see how the Sony A9's blackout-free viewfinder at 20 frames per sec. (fps) fares against the Nikon D5 at 12 fps and the Canon 1Dx II at 14 fps.



Nikon D5 at 12 fpsCanon EOS-1D X Mark II at 14 fpsSony Alpha a9 at 20 fps

And the videos.
Nikon D5 at 12 fps
Canon EOS-1D X Mark II at 14 fps
Sony Alpha a9 at 20 fps


What is Sony A9 Blackout-free shooting?

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Sony A9 at 20 fps Blackout-free Shooting
From Sony:

Blackout-free shooting
Thanks to the non-mechanical electronic shutter system, you can observe the reality of what you’re shooting through the electronic viewfinder even during continuous shooting, without blackout interruption that typically occurs among optical viewfinders due to up-and-down mirror motion. Enhanced speed of the image sensor eliminates distracting EVF display lag in continuous shooting, so that you can compose images with natural comfort, like seeing scenes with your own eyes.

Differences Between Sony A9 and A7 II

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New Sony A9 ILCE-9 Camera
This is the new flagship camera from Sony dubbed the A9, model designation ILCE-9.  It boasts 20 fps shooting with 693 focus points and a blackout-free 3.69 mp electronic viewfinder.  The camera is capable of shooting 4K (2160p) movies.  The A9 has dual memory card slots and a new battery.
Let's see how it compares to the previous 24 mp A7 II camera.

CombatantsSony Alpha 9 (ILCE-9)Sony Alpha 7 II (ILCE-7M2)Number of effective pixels24.2 MP24.3 MPISO Sensitiviy50-204800 (3 stops better)50-25600Movie SizeXAVC S 4K:3840 x 2160(30p, 100M), 3840 x 2160(24p, 100M), 3840 x 2160(30p, 60M), 3840 x 2160(24p, 60M), XAVC S HD:1920 x 1080(120p, 100M), 1920 x 1080(120p, 60M), 1920 x 1080(60p, 50M), 1920 x 1080(30p, 50M), 1920 x 1080(24p, 50M), AVCHD:1920 x 1080(60p, 28M, PS), 1920 x 1080(60i, 24M, FX), 1920 x 1080(60i, 17M, FH), 1920 x 1080(24p, 24M, FX), 1920 x 1080(24p, 17M, FH), AVC MP4:1920 x 1080(60p, 28M), 1920 x 1080(30p, 16M), 1280 x 720(30p, 6M)AVCHD 2.0 / MP4 /…