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Sony A7 IV vs A7 III – Head-to-head Comparability

Sony’s A7 vary has lengthy been their hottest digicam sequence, hitting the sweet-spot between specs and value, and on October twenty first at 3pm GMT / 10am EDT the model new Sony Alpha A7 IV was unveiled.

The earlier Alpha A7 III is likely one of the best-selling full-frame mirrorless cameras of all time, however practically 4 years after it was first launched, it is maybe turn into slightly lengthy within the tooth.

Due to Sony themselves, the entire key specs for the brand new A7IV model have already been revealed, so we will now evaluate the 2 fashions to indicate you what is modified.

With the road value of the 4-year outdated A7 III being considerably decrease than the A7 IV at launch, why would you select to purchase the brand new child on the block? We’re bringing you this in-depth Sony A7 IV vs A7 III comparability that will help you select between the 2.

It’s also possible to learn our detailed Sony A7 III evaluate to search out out precisely what we consider it in far more element.


Sony A7 IV vs A7 III - Head to Head Comparison

The A7 III has a 24.2 megapixel BackSide Illuminated (BSI) Exmor R sensor that delivers nice stills picture high quality and 4K video.

24 megapixels has turn into the sweet-spot for most up-to-date entry-level and mid-range mirrorless cameras, with a lot increased megapixel counts reserved for premium flagship fashions.

Bottom Illuminated (BSI) is a particular manufacturing course of that ought to lead to higher picture high quality in low-light conditions than cameras which have a non-BSI sensor with the identical variety of megapixels.

The A7IV is upping the ante through the use of a newly developed 33 megapixel BSI CMOS sensor, which can presumably turn into the sensor of alternative for all of Sony’s entry-level and mid-range full-frame cameras going forwards.


Sony A7 IV vs A7 III - Head to Head Comparison

The brand new A7 IV makes use of the very newest BIONZ XR processor, as beforehand discovered within the A7S III digicam, which presents a whopping 15+ stops of dynamic vary.

This processor additionally presents 8x extra processing energy than the BIONZ X processor discovered within the A7 III, itself no slouch.

ISO Velocity

There’s nothing to decide on between the 2 fashions right here, with each the A7 III and A7 IV providing ISO ranges that run all the best way up ISO 204,800.

Each cameras have a local vary of 100-51,200 which could be pushed two stops additional to ISO 204,800, and may drop right down to ISO 50 if required.

The A7IV permits you to use ISO 204,800 for video in addition to stills, whereas the A7III tops out at ISO 51,200.


Sony A7 IV vs A7 III - Head to Head Comparison

The A7IV presents 4K UHD video recording within the XAVC S-I format, as much as 60fps at 4:2:2 colour depth in 10-bit to the inserted reminiscence card or over HDMI to appropriate third occasion recorders.

4K/30p video is oversampled from 7K in full-frame, however sadly 4K/60p is oversampled from 4.8K within the APS-C Tremendous 35 mode.

So when taking pictures in 4K at 30p, the digicam utilises the total width of the picture sensor to oversample from 7K’s price of knowledge, however at 60p, a 1.5x crop is utilized.

It helps the S-Cinetone, HLG, S-Log3 and S-Log2 profiles.

There is no such thing as a 4K/60p or 10-bit recording in any respect on the older A7 III, so whereas cropped 4K/60p on the A7IV is disappointing, it is nonetheless an enormous step forwards from the Mark III digicam.

They’ll each document Full 1080 HD at as much as 120fps, with the devoted Gradual and Fast movement mode providing body charges starting from 1fps to 120fps.

The A7 IV additionally has fairly a number of options inherited from the A7S III that set it aside from the A7 III.

These embody the A7S III’s AF Velocity settings, no recording closing dates in any respect, a blue peaking color, the power to shoot vertical movies, dwell streaming help, and twin NTSC and PAL recording on the identical reminiscence card with out having to reformat it.

As well as, the one-touch film button has been relocated from its somewhat awkward place from the rear of the A7 III to the top-panel of A7 IV.

The Sony A7 IV additionally helps the Digital Audio Interface (through MiShoe) to allow use of the ECM-B1M digital shotgun microphone.


Sony A7 IV vs A7 III - Head to Head Comparison

The Sony A7 IV’s auto-focus system helps Actual Time Eye AF for each stills and films and likewise Animal Eye AF (stills solely).

The A7 III did not have these options when it initially launched, however Sony added them through the Model 3.0 firmware replace on the finish of 2020.

The brand new A7IV has precisely the identical autofocus system because the A7S III, with 759 on-sensor phase-detect factors, supported by 425 distinction detect factors.

It additionally has the latest focusing algorithm that is the identical because the one utilized by the not too long ago launched A7S III, which is claimed to make the already glorious AF monitoring system much more dependable.

That is barely higher than the A7 III, which has 693 phase-detection factors that cowl 93% of the body, plus 425 contrast-detection factors, with the system working all the best way right down to -4EV low-light.

Burst Taking pictures

Sony A7 IV vs A7 III - Head to Head Comparison

The 2 fashions are maybe surprisingly evenly matched on the subject of steady taking pictures speeds. They each provide 10fps burst taking pictures with Full AF/AE monitoring, though the A7IV solely presents that fee for JPEGs and lossy Raws.

With rivals just like the Canon EOS R6 providing 20fps burst taking pictures, it is considerably perplexing to see the A7IV sticking with 10fps.

The A7 IV does no less than have a a lot bigger buffer than the A7 III, although, particularly when taking pictures Uncooked recordsdata, having the ability to shoot at 10fps for as much as 830 JPG+RAW photographs in a single high-speed burst (when utilizing a CFexpress Kind A card).

The burst velocity does drop fairly dramatically, although, to simply 5fps if you wish to shoot uncompressed Uncooked recordsdata.


Sony A7 IV vs A7 III - Head to Head Comparison

The A7 IV would not observe in its older brother’s footsteps – as a substitute it has virtually precisely the identical physique design and makes use of the identical heatsink system because the A7S III.

For such a feature-rich digicam, the Sony A7S III stays impressively compact. It has a magnesium alloy physique that solely weighs round 700g with battery and reminiscence card put in.

Due to a beneficiant handgrip the Alpha 7S III will really feel very comfy to carry.

The physique has improved sealing so it may be counted upon in antagonistic situations. It additionally includes a ‘warmth dissipation’ design.

That guarantees no followers, no overheating, and limitless video recording instances in any decision.

On the highest there is a taking pictures mode dial with a brand new separate Photograph / Video / S&Q change beneath, with the digicam remembering the publicity settings in every mode, a never-seen-before characteristic on a Sony Alpha digicam.

There’s additionally a one-touch film document button, twin publicity dials plus a model new unmarked, lockable dial which could be personalized to set both the shutter velocity, aperture, ISO velocity, drive mode, focus mode or, as historically, publicity compensation, though there is no such thing as a high LCD panel.

It’s now doable to attach an exterior monitor on to the A7 IV through the brand new full-size HDMI port.

Picture Stabilisation

The A7 IV has built-in picture stabilisation price as much as 5.5 shutter velocity stops, the identical as on the A7S III.

It additionally will get a brand new characteristic known as Lively Mode that will increase stabilization for film taking pictures, once more inherited instantly from the A7SIII.

The older A7 III additionally has a 5-axis in-body picture stabilisation system nevertheless it’s solely price as much as 5 stops, and it would not help Lively Mode.


Sony A7 IV vs A7 III - Head to Head Comparison

The A7 IV has a higher-resolution, 3.69m-dot EVF that has a refresh fee of as much as 120fps, the identical because the one used on the A7R III and A9 II fashions.

This options 100% scene protection, 0.78x magnification and a 120fps excessive body fee choice to assist observe transferring topics extra easily with just about no lag.

That is higher than the two.36 million dot XGA OLED digital viewfinder utilized by the older A7 III, which has the identical magnification however is lower-resolution and solely goes as much as 60fps.

LCD Display screen

The A7 IV has a completely articulating 3-inch, 1.03-million-dot LCD display with improved touchscreen performance, together with focusing and navigating the person interface.

The A7 IV’s display has a vari-angle design that is been inherited instantly from the A7S III, which for some customers will symbolize an enormous enchancment on the A7 III’s extra restricted 180-degree flip-up design.

You may flip out the display to the facet, rotate it forwards for simpler operation when pointing the digicam at your self, and fold it flat in opposition to the again of the digicam to cease it from getting scratched.

It is merely a way more versatile display for vlogging, film taking pictures and pictures generally.

Reminiscence Playing cards

Sony A7 IV vs A7 III - Head to Head Comparison

The Sony A7 III was clearly forward of its time by being one of many first mirrorless cameras to have two SD card slots, though solely one in every of them takes benefit of the quicker UHS-II customary.

The brand new A7 IV additionally has twin card slots, however they’ll now interchangeably use UHS-II SD-cards and CF Categorical Kind A playing cards, similar to the A7S III.

Battery Life

Sony A7 IV vs A7 III - Head to Head Comparison

The Sony A7 IV makes use of precisely the identical massive capability NP-FZ100 battery because the A7 III, A7C and the A6600 fashions.

It presents a CIPA-rated battery lifetime of 610 photographs when utilizing the LCD display, which is definitely shorter than the A7 III’s 710 shot life (for the LCD display), possibly a consequence of utilizing the quicker BIONZ XR processor.

Each cameras may also be powered and charged through a USB-C connection, which is beneficial in case you’re out and about and have a appropriate powerbank to plug the digicam into.


The brand new A7IV advantages from an improve to the quickest 5GHz Wi-Fi connectivity, whereas the older A7III is proscribed to 2.4GHz.

Dwell Streaming

The Sony A7 IV turns into the most recent digicam launched in 2021 to supply dwell streaming – 10Gbps dwell streaming through its USB-C port to be precise.

The a lot older A7 III mannequin would not provide this comparatively new characteristic.


Sony A7 IV vs A7 III - Head to Head Comparison

One of many extra controversial elements of the brand new Sony A7 IV is its launch value.

At £2399 / €2799 / $2499 body-only within the UK, Europe and the USA respectively, it’s much more than the present road value of the A7 III, which could be picked up for round £1699 / $1799.

While the A7 III has been in the marketplace for a number of years now and has naturally declined in value, we nonetheless suppose that Sony is being considerably over-ambitious with the A7 IV.

It is now not the “entry-level” mannequin that it is predecessor clearly was – as a substitute the A7 III will proceed in that function (Sony all the time keep it up promoting earlier fashions), together with the extra compact Alpha A7C.


Creating the successor to some of the widespread full-frame cameras of latest years was all the time going to be a tough activity, particularly at a time of rising costs and element shortages.

Quite a bit has modified within the 4 years for the reason that A7 III was launched, and it is clear that the brand new Mark IV is a way more succesful hybrid digicam than its predecessor, on paper no less than.

However it’s additionally considerably dearer than its older brother, and likewise than major rivals such because the Canon EOS R6, Nikon Z6 II and Panasonic S1R.

So what do you suppose – have Sony struck the appropriate stability between stills and video? Is the A7 IV a price successor? Go away a remark beneath!

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