Sony A7R III VS. Sony A7III: A Sibling Rivalry

Sony— one of the best manufacturer of mirror less digital camera in the world today. It has strong rivals such as Fujifilm, Canon, and Nikon when it comes to showcasing stunning and impressive digital camera. 

However, that does not mean that rivalry cannot happen from the inside. And because Sony keeps on innovating and manufacturing top-of-the-line digital cameras, each of this model tries to establish superiority over the others. And in this particular article— we have a heated rivalry from Sony’s very own sibling ​sony digital camera— the A7R III and A7III!

​The Sony’s most amazing creations: A7R III and A7III have so much in common, not least on the design which could be identical where it not only for the camera’s name on the rear side and front. However, given that one is two-thirds the price of the other, we can’t help but ask:

Which brings a better investment? 

Come with us as we answer this question to resolve this rivalry between siblings and know which is the best full-frame E-mount mirror less camera between the two!

The Winner: ​Sony A7R III

Whatever your photography requirements you want, I assure you that both the Sony A7R III and Sony A7 III can do a great job! However, when choosing between the two, The Sony A7R III is clearly the winner thanks to its more enhanced features that provide fantastic image quality you will love. It might get a bit expensive than the A7 III, but that comes with the privilege of wielding a mirror less camera with top-of-the-line specs, right?

Sony Alpha ILCE-A7R III Mirrorless Digital Camera


Sony Alpha ILCE-A7R III

Sony Alpha ILCE-A7 III


5.0 x 3.8 x 2.9 in.

 (127 x 96 x 74 mm)

5.0 x 3.8 x 2.9 in.

 (127 x 96 x 74 mm)


23.2 oz (657 g)

 includes batteries

33.3 oz (945 g)

 includes batteries, kit lens


​42.40 Megapixels

​24.20 Megapixels

Sensor Size


 (35.9mm x 24.0mm)


 (35.6mm x 23.8mm)


​102,400 ISO

​204,800 ISO


​1/8000 - 30 sec

​1/8000 - 30 sec







Battery Life

​650 shots

​710 shots





  • ​42.40 MP
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    ​10fps Burst at full 42MP
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    ​High-resolution screen
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    ​AF with teleconverters
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    ​Large and bright EVF
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    ​Advanced 5-axis IS system
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    ​Batter 4K video
  • ​Better Battery Life
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    ​Better Low Light & ISO
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    ​Cheaper Price
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    ​693-point AF system
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    ​Uncropped 4K video


  • ​Support only 1 card slot
  • ​No built-in flash
  • ​Limited touchscreen control
  • ​Heavy body
  • ​Buffer clearing can be slow
  • ​Poor weather-sealing round accessory ports


Sony Alpha ILCE-A7R III Mirror less Digital Camera Review

Sony Alpha ILCE-A7R III Mirrorless Digital Camera

The Sony A7R III is a part of Sony’s A7 series of mirror less digital camera. It was first introduced last October 2017 and is currently the latest high-resolution camera from Sony with an update of the Alpha A7R II that was liable for tempting many professional photographers and keep away from the comfort of Nikon and Canon DSLRs.

​With awesome boosts to performance and a few tweaks to handling, does its higher price tag than its rival sibling worth it? Let’s find out!

Key Features

  • 3.0 inches tilt-angle screen, 1,440,000 dots
  • 3,686K-dot electronic viewfinder w/ 100fps refresh rate
  • Full-frame stacked CMOS sensor w/ 42.4 MP

The A7R III core is its 42.2 MP back-illuminated full-frame Exmor R CMOS sensor which it borrowed from the Alpha A9 but with a more densely populated chip.

It has Alpha A9 same EVF with a Quad-VGA OLED sporting a resolution that is approximately 3,686k dots and utilizes a Zeiss T-Coating to reduce reflections. Plus, the A7R III supports customizable frame rate with choices either 60 or 120 fps.

Together with the impressive EVF, its rear tilt-angle display was also upgraded and has now a stunning resolution of 1.4 million dots plus a touchscreen functionality.

Build and Handling

  • Weighs 657 g
  • Dust and moisture-sealed
  • Magnesium alloy construction

The feel and look of the Sony A7R III follow the design of its predecessors but with a few refinements and tweaks.

It has a multi-selector joystick which greatly improves handling and a quicker AF point selection. It also has the addition of a dedicated AF-ON button for a back-button focusing.

Fractionally slimmer than the Alpha A9 but slightly thicker than the A7R II, the A7R III features a magnesium alloy top, rear and front covers and internal frames. Also, an increased number of lens mount screws provides enhanced durability and all major dials and buttons are sealed, throughout the entire body to protect it from moisture and dust.

Auto Focus

  • Eye AF w/ enhanced tracking performance
  • 425 contrast-detection points
  • 399 phase-detection points

The A7R III has improved the focusing system as well. It has 399 focal-plane phase detection AF points like the A7R II and has boosted the amount of contrast detection AF points to 400.

This improved the AF speed and delivers roughly 2x faster speeds in low-light conditions, together with the improved AF tracking performance. Also, the A7R III Eye AF was improved which can continuously focus and track on a subject’s eye even if they look away from the camera.

Image Quality

  • 14-bit raw shooting
  • 15-stop dynamic range
  • ISO100-32,000, expandable to 50-102,400

The A7R III is capable of resolving a stunning level of detail. If you plan to produce large A2-size prints, then you will not be disappointed with A7R III’s files.

A7R IIIalso hasa strong noise control where the noise level is kept within acceptable limits, thus delivering amazing results with a minimal Chroma noise and a natural-looking granular noise even when shooting at a high native sensitivity range of up to 32,000 ISO.

​Its dynamic range performance is also stunning. And for general editing of raw files where you wish to recover more details, you have plenty of flexibility with the file from A7R III.

Final Thoughts

  • ​Enhanced 5-axis body image stabilization
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    ​Better battery life
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    ​Better 4K video quality
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    ​Enhanced real-world AF performance
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    ​Great high ISO performance
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    ​Improved dynamic range
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    ​Fantastic image quality

​With great ISO performance, Great AF performance and dynamic range, the A7R III surely provide a fantastic image quality. Together with better battery life and durable body, this mirror less camera can take any stress that comes with your love of photography.

  • ​Expensive
  • ​No built-in flash
  • ​Only supports one card slot

​Although the A7R III provides you with great features, it has other siblings which offer the same feature at a much lower price. Also, with only 1 card slot you might not get to enjoy shooting hundreds of exceptional images without worrying when it will run out of memory.

Sony Alpha ILCE-A7 III Mirror less Digital Camera Review

Sony Alpha ILCE-A7 III Mirror less Digital Camera

The Sony A7 III is an amazing digital camera that ticks a lot of boxes for most photographers. Sony has managed to takes some of the best from A7R III and Alpha A9 and has added them to a single camera which offers a great mix of image quality and performance.

​The A7 III sits on the bottom rung of full-frame mirror less camera range from Sony and is specifically designed to appeal to both professionals and photography enthusiasts. But, does it have what it takes? Let’s find out!

Key Features

  • 4K video capture with the full-width sensor
  • 5-axis image stabilization that offers 5-stop compensation
  • The all-new 24.2 MP back-illuminated sensor

Sony was not tempted to increase the A7 III’s resolution and still have a 24.2 M. However, its sensor is completely new and comes with a back-illuminated design together with the latest BIONZ X image processor. The result is a greatly improved sensitivity range with an extended ISO of 204,800.

​It also has the 5-axis image stabilization system with a few tweaks— it now provides a 5-stop stabilization. The A7 III also has 4K video capture and records in 24p with the full width of the sensor. Like the A7R III, the A7 III offers a new Hybrid Log-Gamma profile which supports an Instant HDR workflow and allows HRD-compatible TVs to playback a 4K HDR footage.

Build and Handling

  • Weather and dust-sealed
  • Features an AF-On button plus multi-selector joystick
  • Design identical to the Alpha A7R III

The A7 III has a similar body as with the A7R III.

The A7 III also has the same multi-selector joystick that greatly improves handling,and the AF-On dedicated button on the rear makes the back button focusing so much easier! All of A7 III’s major dials and buttons are sealed from external elements and are protected against moisture and dust.

Its body is thicker than its predecessor. However, it has a more satisfying grip thanks to the addition of refined grip. And although its construction is quite similar to that of A7R III, its back panel is constructed using plastic.

Auto Focus

  • Focuses down to -3EV
  • 93% coverage
  • 693-point AF system

It is not often that you see a certain manufacturer take an amazing AF system from its flagship cameras, add it to another camera and offer it with half the price. However, that is what Sony has done with the A7 III.

From the Alpha A9, the A7 III gets the impressive 693-point phase-detect AF system and offers an impressive 93% coverage across the frame and an additional 425 contrast-detect points for helping in focus. The result, the camera can focus in light levels for as low as -3EV.It also has the newest Eye AF focusing mode and other sophisticated AF modes like Lock-on.

Image Quality

  • Offers an impressive dynamic range
  • Detail-rich images
  • Excellent high ISO performance

The A7 III, 24.2 MP resolution, is capable of delivering images which provides excellent levels of detail. And although the sensor does not get the stacked design from Alpha A9, the back-illuminated architecture aids the A7 III in delivering stunning ISO performance.

​At base sensitivity, the files appear clean and devoid of noises. And even at 6,400 ISO, it provides very fine grain-like noise but not to the detriment of the image. If you put it above 12,800 ISO you will still have satisfactory shots— chroma noise becomes noticeable in RAW files which are easy to suppress in post-processing and a pronounced luminance noise but not that offensive.

Final Thoughts

  • ​Fast AF
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    ​Good battery life
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    ​Excellent dynamic range and high ISO performance
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    ​24 MP sensor provides stunning image quality
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​Even with a 24MP sensor, the A7 III delivers a stunning image, thanks to its Fast AF, high ISO performance,and excellent dynamic range. It also offers a good battery life so you can take photos without worry. As for the price, nothing beats it!

  • ​No losslessly compressed RAW option
  • ​Support only 1 card
  • ​Buffer clearing is slow
  • ​Dedicated battery charger not included

​Although it takes amazing images, the A7 III has no losslessly compressed RAW option. And just like the A7R III it only supports a single card. What’s more is that its dedicated battery charger is not included,so you need to buy it separately.


​At the end of this rivalry between siblings, it is quite obvious that the Sony A7R III emerged victorious! With a higher resolution and ISO performance, this mirror less digital camera should give you only the best image quality you will need. Although you might be paying extra for this camera, it is certainly worth it that provides you with a more amazing camera experience.

Even you can check Sony A7 and Fujifilm X-T2

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