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Silent shutter mode is likely to result in significant distortion with moving subjectsįull-width 4K video takes around 26.5ms, which is comparable with the other models in its class. This means silent shutter mode is likely to result in significant distortion with moving subjects. 14-bit readout of the whole sensor for stills takes around 1/15 sec (~66ms), which is around seventeen times longer than the super-fast a1 takes to read out its sensor. Our first look at the rolling shutter rates suggests this isn't an especially fast sensor. Sony says the camera's buffer depth allows over 800 Raw+JPEG images (or over 1000 JPEGs), but this is in the uncompressed Raw format, which again shoots at around 6 fps. The a7 IV has a lossless compression option, for when you need maximum processing flexibility, but the burst rate drops to around 6 fps if you use it.

However, it can only do so in the lossy compressed format if you want to shoot Raw, and drops to 12-bit mode, further reducing dynamic range. A slight uptick in detail and comparable low light performance is the most likely thing we can expect, in terms of image quality.ĭespite the higher resolution, the a7 IV can still shoot at 10 frames per second.

Given that BSI sensors are already widely used in the current generation of cameras, we're not expecting huge leaps forward in image quality. This represents a move away from the 24MP chip used by the a7 III and its immediate Panasonic and Nikon rivals. What's new | How it compares | Body and controls | Initial impressions | Image quality | Autofocus | Video | Conclusion | Sample Gallery | SpecificationsĪt the heart of the a7 IV is a new 33MP BSI-CMOS sensor. The a7 IV has a recommended price of $2499, a $500 increase over the launch price of the a7 III. The a7 IV sees just about every one of its specifications improved over the a7 III, from basics such as the resolution of the sensor and viewfinder to significantly increased video capture options. Twin card slots (1x CFe A/UHS-II, 1x UHS-II SD).4K/60p (from 4.6K capture) in Super35 / APS-C mode.Full-width oversampled 4K from 7K, up to 30p.In-body stabilization rated up to 5.5EV.Up to 10 fps shooting in lossy Raw with extensive buffer.It's the most advanced yet, bringing many of the improvements Sony has made in terms of autofocus and interface design since the launch of the a7 III, back in February 2018. The Sony a7 IV is the fourth generation of the company's core a7 full-frame mirrorless camera model.