Sony Alpha 7 IV full review.

The hardware in twelve lines. Every number below is taken from the manufacturer or from independent measurements in the source review — nothing is inferred. For real-world impact, jump straight to the sections that follow.

The a7 IV is the fourth iteration of Sony's mainstream full-frame mirrorless body, and the first one to inherit most of what made the more specialised a7S III a step forward in 2020 — the body, the menus, the autofocus engine. The result is less of a successor to the a7 III and more of a quiet reset for the line.

Sensor resolution moves up from 24 to 33 megapixels, the menus are finally usable on a touchscreen, the rear display now articulates, and the video toolkit pulls in 10-bit codecs and S-Cinetone from the company's video-first models. The launch price climbs to $2,499, a $500 increase over the a7 III, which lands the a7 IV squarely against Canon's EOS R6 II rather than the entry-level full-frame tier.

What follows breaks down the body across the headings that matter when you're choosing between mirrorless cameras at this level — sensor and burst, autofocus, controls, video, battery — and ends with a scoring grid that rates the body axis by axis so you can line it up against other reviewed models.

At the centre of the body is a 33 MP backside-illuminated CMOS — a step away from the 24 MP chip that the a7 III shared with most of its Panasonic and Nikon contemporaries. Image-quality gains are modest by design: a small uptick in detail, broadly comparable low-light behaviour, and slightly lower dynamic range at high ISO. BSI architecture is established enough that nobody is expecting a generational leap from a resolution bump alone.

Burst speed holds at 10 fps despite the higher resolution, but the headline rate comes with conditions. Hitting 10 fps in raw forces the camera into a 12-bit lossy-compressed mode that meaningfully reduces dynamic range. Switching to lossless compressed or uncompressed raw — the format you want when you intend to push files in post — drops the rate to about 6 fps. Buffer depth is generous (Sony quotes over 800 raw+JPEG frames), but only at the uncompressed setting, which is the slow one.

The sensor isn't particularly fast off the chip. Full-frame 14-bit readout takes roughly 1/15 sec — about 17× longer than the stacked sensor in the a1 — so electronic shutter will distort anything that moves at speed. Full-width 4K video reads out in around 27 ms, which is in line with peer mirrorless models in this class. 60p footage drops to 12.8 ms readout, low enough that rolling-shutter artefacts on fast pans are rare.

Autofocus is where the a7 IV opens the largest gap on its predecessor. The a7 III could detect human eyes but ran subject detection and AF tracking as two separate systems. The a7 IV merges them, and adds animal and bird detection that for the first time also extends to the video mode. In practice you select a subject category and the camera handles eye → face → body handoff transparently, including across erratic motion.

Sensitivity reaches down to –4 EV with an f/2 lens, which sounds dramatic on paper but in real terms matters less than the change in how the system behaves. Even on subjects the recognition engine hasn't been trained on, the AF uses colour, brightness and pattern matching to keep tracking once you've placed a point on the subject — closer in feel to recent Canon AF than to older Sony bodies.

The eye-detection point itself isn't quite as pinpoint-accurate as on previous Sony generations: very wide apertures with shallow depth-of-field can land focus on the eyelashes rather than the iris under stress. The trade-off is usability — the system is much easier to operate, requires far less menu work, and recovers from misses faster. The AF area system also remains dense with options, but they can finally be hidden one by one to declutter the menu.

The a7 IV inherits the chassis Sony introduced on the a7S III: deeper grip, larger and better-placed rear joystick, and — notably — a full-size `Type-A HDMI` port instead of the fragile micro-HDMI that has dogged the line since the original a7. Anyone who has shot video off a mirrorless camera with an external recorder will recognise the difference.

The shoulder dial sits unmarked and lockable. By default it controls exposure compensation, but with no printed scale you can reassign it to any function the camera exposes — ISO, picture profile, white balance. It's a small change with surprisingly large consequences for people who don't shoot in modes where ±EV is the obvious control to want under the thumb.

The rear screen fully articulates rather than tilting. The choice is opinionated: vloggers and people who shoot vertical clips gain a lot, while landscape and street shooters who preferred the older tilt-out behaviour lose a bit of speed when shooting low. Twin card slots return, with the top slot accepting either a UHS-II SD or one of Sony's compact CFexpress Type A cards. CFexpress is mandatory only for one of the high-frame-rate slow-motion modes; everything else writes happily to a V90 SD.

The menus that arrived on the a7S III have made the move across. Section tabs run down the left edge of the screen, sub-section headings appear inside each tab, and the whole system is touch-responsive — Sony was years behind the rest of the industry on this and finally caught up. Existing Sony shooters will need to relearn where some settings live, though the underlying logic between settings hasn't changed.

Bluetooth gets its first real workout on this body. Sony has supported Bluetooth on its cameras for years, but only as a one-way pipe for GPS data from a phone. The a7 IV adds the always-on, low-energy connection most rivals already had: pair the camera once, and from then on the phone re-establishes the link automatically when both are nearby. Transferring images to a phone goes from a deliberate operation to background behaviour.

The mechanical shutter can now close when the camera is powered off. It's intended as dust protection during lens swaps rather than a physical shield — shutter blades are thin enough that anything contacting them risks bending — but it's a meaningful quality-of-life addition on a system whose lens mount sits very close to the sensor.

Video gets the most generous spec upgrade. Full-width 4K is oversampled from a 7K capture up to 30p, dropping to a Super35 crop at 60p that's still oversampled from a 4.6K region. The codec list adds H.265 alongside 10-bit recording, which gives raw colour grading and HDR pipelines actual headroom to work with. S-Cinetone, the picture profile Sony developed for the FX line, ships here too — a colour science aimed at producing useable footage straight out of camera without needing a full grade.

HEIF stills capture lands on this body as well, broadening the bit-depth options outside of video. Live streaming over USB is available as a clean source, and the AF system's subject recognition extends to video mode — meaning solo operators get the same eye and animal detection in clips that they get in stills.

The one weak point is in-body stabilisation when applied to video. IBIS works cleanly for static framing or slow handheld walks, but introduces a slight jerk when the operator deliberately moves the camera — pans, tilts, push-ins. It's not severe, but it's visible enough that anyone planning to do a lot of intentional camera movement may want to either turn IBIS off, switch to gimbal work, or accept a touch of stutter in the result.

The a7 IV runs on the same NP-FZ100 battery that the a7 III, a9 II and a7R IV use, which is the right answer if you're moving up from an existing Sony body. The CIPA rating is 580 shots per charge using the rear screen and 520 using the EVF. CIPA numbers are conservative — real-world counts often run well above the rated figure on a fresh battery, particularly if you're not in a continuous high-burst workflow.

Both charging and live operation now run over USB-C with Power Delivery. For tethered studio work, or for shooters who carry a small USB-PD power bank, this removes the need for a dedicated charger in the bag. The USB-C port is also the streaming and tethering pipe, so a single cable covers most ancillary use cases.

Stills hold up well next to peers. Detail in low ISO situations is incrementally better than the a7 III, which is the expected outcome of the resolution bump. JPEG colour is attractive and consistent across skin tones, foliage and neutral surfaces. Dynamic range at base ISO is good rather than class-leading, with raw files that respond well to shadow lifts in editing.

Where the trade-offs become visible is at high ISO. The new chip delivers slightly less clean output and slightly less dynamic range than the 24 MP it replaces, which is the price paid for more pixels. The margins are tight — small enough that nobody choosing between this body and a competing 24 MP body should make image quality the deciding factor — but they are measurable in side-by-side comparisons.

For most workflows the bigger questions are operational, not optical. The autofocus, the menus, the storage choices, the video toolkit and the body ergonomics will dictate the experience long before the sensor's margins of difference matter to a print or a deliverable.

The a7 IV is the most expensive a7 to date and the most capable. Image quality is excellent without being a sensor-level upgrade, the autofocus is among the easiest to operate in the segment, video has the codecs and colour profiles to keep up with dedicated hybrid bodies, and the body ergonomics finally clear the bar a flagship-priced mirrorless should have cleared years ago.

The catches are real but bounded: the 10 fps burst rate is conditional on lossy raw, the IBIS isn't a substitute for a gimbal during deliberate camera movement, and the menu system, despite the redesign, still exposes more configuration than most users will ever need. The eye-detection accuracy regression compared to earlier Sony bodies is a narrow but specific issue for portraiture at wide apertures.

Competition is intense at this level — Canon's EOS R6 line, Nikon's Z6 line, Panasonic's S5 series all make defensible cases — but the a7 IV puts together a combination of stills, video, autofocus and lens-system depth that the field finds hard to match in a single body. It earns an overall 89% and a Gold rating; the scoring grid below breaks that verdict down axis by axis.

The body is rated against others in the same class on both an overall score and a per-axis breakdown. The grid below sits alongside the suitability call-outs and the list of comparable bodies in the same class — a starting point for a side-by-side.

Last reviewed 2026-05-23 · Back to Sony Alpha 7 IV listings →