Sony A6700 Review: Superb Autofocus, Deliberate Limits

Sony left its APS-C line alone for four years. The A6700 is what came back, and the temptation is to read it as a modest refresh — same 122 x 69 x 75 mm footprint as the A6600, 493 grams, familiar shape. That undersells it. One component has been transformed, one has deliberately not been, and knowing which is which tells you whether this camera is right for you.

This is the single biggest change, and it is genuinely excellent. The hybrid phase-detection system covers 93% of the frame across 759 selectable points, and it is the third Sony body to gain dedicated deep-learning assistance, working alongside a dual Bionz XR processor.

In practice that means subject recognition that borders on uncanny. It identifies not just faces but eyes, nose, neck and ears, plus shoulders, hips, knees, wrists and ankles — so it keeps tracking when a subject turns away, wears a hat or sunglasses, or moves to the far side of the frame. The movement prediction holds focus on a moving eye even in backlight or at distance.

Animal detection extends to dogs, cats, birds and insects with head tracking. Vehicle recognition works from the windscreen, covering motorcycles, cars, trains, aircraft and helicopters. And it holds on down to -3 EV, which makes it a genuinely capable low-light and night camera.

Here is the frustration. That autofocus is paired with a burst rate capped at 11 frames per second in both mechanical and electronic shutter, and a buffer that runs out quickly.

Worth flagging honestly: the two independent tests consulted for this rebuild report different buffer depths. One recorded roughly 23 compressed RAW frames, or 18 in lossless RAW plus JPEG. The other measured 59 raw files at 11 fps — about 5.5 seconds of shooting — falling to 42 in raw plus JPEG. Either way the conclusion is the same: the buffer runs dry well before the autofocus does, and for sustained action the camera is the limiting factor rather than the subject.

Mechanical shutter tops out at 1/4000, electronic at 1/8000. There is also no pre-capture mode, which rivals increasingly offer. One assessment was blunt about the cause — the sensor, memory controller, image processor and AI chip are all capable of much more, and the restriction reads as product segmentation rather than engineering.

If you shoot sport or fast wildlife in long sequences, this is the specification that should give you pause.

The sensor is a new 26-megapixel back-illuminated CMOS with 5-axis stabilisation — more resolution than its predecessor, which allows harder cropping, though still behind direct rivals such as the Canon EOS R7 and Fujifilm X-H2.

Detail and colour accuracy are both strong, with 14-bit uncompressed RAW available alongside the usual RAW, JPEG and HEIF options. Native ISO runs 100 to 32,000, expandable from 50 to 102,400. Grain appears around ISO 2000 but images hold up without meaningful degradation to about ISO 8000; detail falls away sharply from ISO 20,000 and the top of the range is effectively unusable near 50,000. Stay under ISO 12,800 and there are no unpleasant surprises. Dynamic range is noted as limited to around 3 stops of latitude.

It is worth pairing this body with good glass rather than the bundled 16-50mm power zoom — the assessment that produced these findings used a 24mm f/2.8 prime, and sharpness day and night was described as particularly good in that combination.

Video is fully separated from stills by a dedicated photo/video/S&Q switch under the mode dial, and it is more capable than the price suggests.

You get 4K 60p in 10-bit 4:2:2 with only a very slight crop, oversampled from 6K, plus 4K 120p in 10-bit 4:2:0 and 240p at Full HD for slow motion. S-Log3 and S-Cinetone are both present, the former for grading latitude and the latter for accurate skin tones. Autofocus during video is as sharp as it is for stills, and auto-framing will crop to keep a subject centred — useful for anyone recording themselves.

Notably for a body this small, heat is well managed: recording length is limited by SD card capacity rather than a thermal cut-off.

The grip is considerably deeper than the A6600's, with a thumb rest on the back, and the result is a secure hold for something this compact. A front command dial joins the rear dial and the four-way controller, an AF-On button sits under the thumb, and there are three customisable buttons. The body is magnesium alloy with full weather sealing.

The single-handed operation is genuinely good — but two things annoy. Larger hands will find the little finger slides beneath the body, which is fine for security and less so over a long session. And there is no joystick, Sony having chosen more buttons and the control wheel instead, which is a strange omission when one-handed control is the camera's strength.

The 3-inch vari-angle touchscreen, by contrast, is excellent, and menu navigation is clear if still a step behind Canon's.

The viewfinder is the weak point, and both independent assessments say so. It is a 0.39-inch OLED panel at just 2.36 million dots with 1.07x magnification and 22 mm eye relief — unchanged in resolution from the previous generation. Worse, when you use the 120 Hz refresh mode for action, that 1024 x 768 resolution is halved. A Fujifilm X-T5's 3.69-megapixel finder is a clear step up. If you shoot through the viewfinder all day, handle one first.

There is one card slot. It is at least UHS-II now rather than UHS-I, and sensibly positioned on the side rather than next to the battery — but there is no second slot and no hybrid SD/CFexpress Type-A option.

Sony sticks with the NP-FZ100, so batteries carry over from other bodies. Rated life is 570 shots on the LCD and 550 through the viewfinder under CIPA testing, with real-world figures around 530 to 570 depending on use. That is respectable, though notably down on the A6600's 810/720 from the same battery — the new electronics draw more.

No charger, cable or dock is supplied. The stated justification is environmental, but you will need a Power Delivery cable and a decent mains adapter, and a separate charger is an extra purchase if you want to charge a battery outside the body.

E-mount is one of the best-stocked systems available — but overwhelmingly for full frame. Strip the native APS-C range back to lenses genuinely worth putting on a modern 26-megapixel sensor and the list is short: roughly 14 current references once you discount the ageing barrels and the motorised video zooms. There is no fast ultra-wide zoom and no bright telephoto. Some are excellent, the 16-55mm f/2.8 G among them, but you will likely end up buying full-frame glass and carrying the extra size.

Buy it if you want the best autofocus available in a small body, if you shoot a genuine mix of stills and video, or if you want a compact travel and documentary camera that is weather-sealed and stabilised. On autofocus and video capability it is well ahead of what the price suggests.

Think carefully if you shoot long action sequences — the buffer will frustrate you. Look elsewhere if the viewfinder matters more to you than the body size, or if you need dual card slots for paid work.

Truthful Reviews has not tested this camera. Every performance figure above comes from published testing by two independent European publications, both covering this exact model, and both recorded against this page as approved editorial provenance:

• A full published test of the Sony A6700 by a French technology publication on our approved source list
• A second, independent full test of the Sony Alpha 6700 by a different approved publication

Both source URLs are stored against this page in machine-readable form as approved source URLs, so the provenance travels with the record rather than living only in this paragraph. Where the two disagree, both figures are given rather than one being silently chosen. The buffer-depth discrepancy noted above is the clearest example, and it is recorded in this page's stored source-conflict field.

The body was available new on Amazon UK with a working buy box. The current verified price and seller are shown in the buying panel above.

A second new listing for the same camera was available from another seller, so compare seller and condition before ordering. We have linked the first because it is the listing already matched to this product, but we could not establish from the listing data whether the cheaper one is the same UK-market SKU, so check the seller and specification before choosing on price alone. Kit versions with the 16-50mm and 18-135mm lenses are sold separately and cost more than the body alone.00 — confirm whether a lens is included before ordering. Check the price on Amazon UK or search on Amazon US