This processor also offers 8x more processing power than the BIONZ X processor found in the A7 III, itself no slouch.

The new A7 IV uses the very latest BIONZ XR processor, as previously found in the A7S III camera, which offers a whopping 15+ stops of dynamic range. This new sensor gives it the edge in resolution over both the previous A7III (by 27%) and rivals like the Canon R6, Nikon Z6 II and the Panasonic S1, whilst not treading on the toes of the 42 megapixel A7R III or the 61 megapixel A7R IV. The A7IV is upping the ante by using a newly developed 33 megapixel Exmor R BSI CMOS sensor, which will presumably become the sensor of choice for all of Sony's entry-level and mid-range full-frame cameras going forwards. The A7 III has a 24.2 megapixel BackSide Illuminated (BSI) Exmor R sensor that delivers great stills image quality and 4K video.Ģ4 megapixels has become the sweet-spot for most recent entry-level and mid-range mirrorless cameras, with much higher megapixel counts reserved for premium flagship models.īackside Illuminated (BSI) is a special manufacturing process that should result in better image quality in low-light situations than cameras that have a non-BSI sensor with the same number of megapixels. You can also read our detailed Sony A7 III review to find out exactly what we think of it in much more detail. With the street price of the 4-year old A7 III being significantly lower than the A7 IV at launch, why would you choose to buy the new kid on the block? We're bringing you this in-depth Sony A7 IV vs A7 III comparison to help you choose between the two. Thanks to Sony themselves, all of the key specs for the new A7IV version have already been revealed, so we can now compare the two models to show you what's changed. The previous Alpha A7 III is one of the best-selling full-frame mirrorless cameras of all time, but nearly 4 years after it was first launched, it's perhaps become a little long in the tooth.

Sony's A7 range has long been their most popular camera series, hitting the sweet-spot between specs and price, and on October 21st at 3pm GMT / 10am EDT the brand new Sony Alpha A7 IV was unveiled.

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