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Sony unveils A7 IV full-frame mirrorless camera with 33MP sensor and 4K 60p video

In short: Sony’s latest full-frame mirrorless camera is official as the imaging specialist has officially announced the Alpha 7 IV interchangeable lens camera. The Alpha 7 IV features a newly developed 33-megapixel back-illuminated full-frame Exmor R CMOS sensor with a standard sensitivity of ISO 100-51200 and an extended sensitivity of ISO 50-204800.

Meanwhile, the BIONZ XR processing engine borrows from Sony’s flagship Alpha 1 to deliver high-speed autofocus and continuous shooting up to 10fps with AF / AE tracking. The 759 phase-detection AF points cover roughly 94 percent of the image area, and Sony says the Alpha 7 IV has 30 percent better face and eye detection accuracy for humans than the Alpha 7 III was capable of. The camera can also track the eyes of birds and animals in photos and videos for the first time.

A five-axis stabilization system in the body provides a shutter speed advantage of up to 5.5 stops, as well as improved grip for greater comfort. Sony has additionally equipped a 3.68 million-dot OLED Quad-VGA electronic viewfinder, which the company says offers 1.6 times the resolution of the Alpha 7 III. A 3-inch 1.03 million-dot touchscreen rear LCD is also present if you don’t want to use the electronic viewfinder.

Video enthusiasts should know that the Alpha 7 IV is capable of 4K 60p video in Super 35mm mode, and up to 4K 30p resolution with 7K oversampling is available in full frame mode. The camera also features a 10-bit 4: 2: 2 color depth for natural gradation along with XAVC SI intra-frame coding for efficient editing workflows and XAVC HS H.265 long-GOP for doubling the compression efficiency.

The Alpha 7 IV’s body is made of magnesium alloy to reduce overall weight, and a redesigned lens lock button helps improve dust and moisture resistance. However, Sony points out that the camera is not guaranteed to be 100 percent dust and moisture resistant, so keep that in mind when shooting in suspicious conditions. It weighs in at approximately 1.73 pounds with the battery installed and one memory card (there are two card slots).

Connectivity options abound, including Bluetooth 4.1, dual band Wi-Fi, and wired LAN.

In terms of battery life, Sony said users can take around 520 shots with the electronic viewfinder, or around 580 shots with the LCD. When recording video, you can get approximately 170 minutes of continuous recording with the viewfinder or 175 minutes with the rear-mounted display.

Sony’s new Alpha 7 IV is slated for release in December and will set you back $ 2,500. B&H Photo is already hosting pre-orders with the specified date of shipment on December 30th. A bundle with a Sony FE 28-70mm f / 3.5-5.6 OSS lens will set you back $ 2,698.


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