89points
71points

Sony Alpha 7R III

91points
69points

Sony Alpha a9

vs
vs

87 facts in comparison

Sony Alpha 7R III vs Sony Alpha a9

Sony Alpha 7R III
Sony Alpha a9

Why is Sony Alpha 7R III better than Sony Alpha a9?

  • 1.69% larger sensor
    ?

    24 x 35.9mmvs35.6 x 23.8mm
  • 1.75x more megapixels (main camera)
    ?

    42.4MPvs24.2MP
  • Has a flip-out screen
    ?
  • 0.17% lower noise at high ISO
    ?

    3523 ISOvs3517 ISO
  • 8 better image quality
    ?

    100vs92
  • 4.42% better color depth
    ?

    26bitsvs24.9bits
  • 10.53% wider dynamic range
    ?

    14.7Evsvs13.3Evs
  • Has a built-in HDR mode
    ?

Why is Sony Alpha a9 better than Sony Alpha 7R III?

  • 268 more focus points
    ?

    693vs425
  • 2x higher maximum light sensitivity
    ?

    204800 ISOvs102400 ISO
  • 2x faster shooting at highest resolution with AF as JPEG format
    ?

    20fpsvs10fps
  • Has a built-in focus motor
    ?
  • 2g lighter
    ?

    673gvs675g
  • Has phase-detection autofocus for videos
    ?
  • Supports a remote smartphone
    ?
  • 1327k dots higher resolution (EVF)
    ?

    3686k dotsvs2359k dots

Price comparison

Sony Alpha 7R III

ProductStorePrice
Sony Alpha 7R III AmazonSony a7R III Mirrorless Camera: 42.4MP F...Sony a7R III Mirrorless Camera: 42.4MP Full Frame High Resolution Interchangeable Lens Digital Camera with Front End LSI Image Processor, 4K HDR Video and 3" LCD Screen - ILCE7RM3/B Body, Black
Amazon logo
$2,798.00
Sony Alpha 7R III AmazonSony a7R III 42.4MP Full-Frame Mirrorles...Sony a7R III 42.4MP Full-Frame Mirrorless Interchangeable-Lens Camera (Renewed)
Amazon logo
$2,174.95

Sony Alpha a9

ProductStorePrice
Sony Alpha a9 AmazonSony a9 Full Frame Mirrorless Interchang...Sony a9 Full Frame Mirrorless Interchangeable-Lens Camera (Body Only) (ILCE9/B),Black
Amazon logo
$3,498.00

Cheap alternatives

Design

1.Has a flip-out screen
Sony Alpha 7R III
Sony Alpha a9
Flip-out screens can be useful for tricky shots.
2.weather-sealed (splashproof)
Sony Alpha 7R III
Sony Alpha a9
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
3.Has a built-in focus motor
Sony Alpha 7R III
Sony Alpha a9
The focus motor moves the lens in order to autofocus. For system cameras, having a focus motor in the camera's body allows you to use a wide range of lenses, including lenses which do not have their own focus motor. For compact cameras, a focus motor is usually built-in.
4.weight

675g

673g

We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
5.viewfinder coverage

100%

100%

With 100% coverage, you can compose the image correctly when you capture the photo. With less than full coverage, you may have to crop your photos afterward to get them looking perfect.
6.is dustproof and water-resistant
Sony Alpha 7R III
Sony Alpha a9
The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water.

Optics

1.sensor size

24 x 35.9mm

35.6 x 23.8mm

The larger the sensor the more light the sensor captures yielding in better image quality.
2.focus points

425

693

The more focus points the more flexibility in picking which part of the scene to focus on. They also give the image sensor a better probability in identifying the right area of the scene to focus on in more automatic modes.
3.megapixels (main camera)

42.4MP

24.2MP

The number of megapixels determines the resolution of the images captured with the main camera. A higher megapixel count means that the camera is capable of capturing more details. However, the megapixel count is not the only important element determining the quality of an image.
4.maximum light sensitivity

102400 ISO

204800 ISO

With a higher light sensitivity (ISO level), the sensor absorbs more light. This can be used to capture moving objects using a fast shutter speed, or to take images in low light without using a flash.
5.continuous shooting at high resolution

10fps

20fps

Fast continuous shooting is useful for catching action shots.
6.has AF tracking
Sony Alpha 7R III
Sony Alpha a9
With AF tracking, once you choose the subject and press the shutter release part way down, as the subject moves, the autofocus will follow it. No more out of focus shots.

Videography

1.video recording (main camera)

2160 x 30fps

2160 x 30fps

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.
2.Has phase-detection autofocus for videos
Sony Alpha 7R III
Sony Alpha a9
A phase-detection autofocus system is faster than a contrast detection autofocus system. Even when recording scenes with a lot of fast movements, the videos are sharp and clear.
3.has continuous autofocus when recording movies
Sony Alpha 7R III
Sony Alpha a9
When recording movies they stay focussed and sharp.
4.Has timelapse function
Sony Alpha 7R III
Sony Alpha a9
A timelapse shows a long passage of time sped up. A series of photographs taken from the same position over a long period is joined together to create a short video. It is great way to capture things like the setting sun, or clouds moving across the sky.
5.has a 24p cinema mode
Sony Alpha 7R III
Sony Alpha a9
24p is a video format (24 frames per second) traditionally used in cinema. Nowadays, it is used to create film-like motion characteristics.
6.supports slow-motion video recording
Sony Alpha 7R III
Sony Alpha a9
Slow-motion is an artistic video effect that makes time seem to go slower. It is achieved by recording a video at a higher frame-rate than the standard playback rate of 24fps or 30fps. Frame rates for slow-motion videos vary between 60fps and 960fps.

Audio

1.has a stereo microphone
Sony Alpha 7R III
Sony Alpha a9
A stereo microphone allows to record audio files or movies in stereo without an external microphone.
2.has a microphone input
Sony Alpha 7R III
Sony Alpha a9
A microphone port allows connecting external high-end or specialized microphones.
3.number of microphones

1

1

More microphones result in better sound quality and enable the device to filter out background noise.
4.has a socket for a 3.5 mm audio jack
Sony Alpha 7R III
Sony Alpha a9
With a standard mini jack socket, you can use the device with most headphones.
5.Has a zoom microphone
Sony Alpha 7R III
Sony Alpha a9
Zoom microphones record high-quality audio and enable you to record sound from a distance. They can be useful for recording meetings, lectures, and presentations.
6.has stereo speakers
Sony Alpha 7R III
Sony Alpha a9
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

Battery

1.Battery life (CIPA)

650shots

650shots

CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies.
2.has a removable battery
Sony Alpha 7R III
Sony Alpha a9
The battery is removable and can be replaced by the user if broken.
3.has a rechargeable battery
Sony Alpha 7R III
Sony Alpha a9
The battery can be recharged and used over again.
4.has a battery level indicator
Sony Alpha 7R III
Sony Alpha a9
An indicator shows you when the device has low battery.
5.battery power

2280mAh

2280mAh

Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
6.has wireless charging
Sony Alpha 7R III
Sony Alpha a9
The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.

Features

1.noise

3523 ISO

3517 ISO

The maximum ISO at which the device still captures excellent quality images. Source: DxOMark.
2.image quality

100

92

A device's overall image quality score considers: color depth, dynamic range and low light performance. Source: DxOMark.
3.supports Wi-Fi
Sony Alpha 7R III
Sony Alpha a9
The device can connect to Wi-Fi.
4.color depth

26bits

24.9bits

The better a device's color depth the more color nuances it can distinguish. Source: DxOMark.
5.dynamic range

14.7Evs

13.3Evs

The better the dynamic range the system captures a wider number of values from dark to light leading to more details in low and highlights. Source: DxOMark.
6.has an external memory slot
Sony Alpha 7R III
Sony Alpha a9
The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.

Price comparison

Sony Alpha 7R III

ProductStorePrice
Sony Alpha 7R III AmazonSony a7R III Mirrorless Camera: 42.4MP F...Sony a7R III Mirrorless Camera: 42.4MP Full Frame High Resolution Interchangeable Lens Digital Camera with Front End LSI Image Processor, 4K HDR Video and 3" LCD Screen - ILCE7RM3/B Body, Black
Amazon logo
$2,798.00
Sony Alpha 7R III AmazonSony a7R III 42.4MP Full-Frame Mirrorles...Sony a7R III 42.4MP Full-Frame Mirrorless Interchangeable-Lens Camera (Renewed)
Amazon logo
$2,174.95

Sony Alpha a9

ProductStorePrice
Sony Alpha a9 AmazonSony a9 Full Frame Mirrorless Interchang...Sony a9 Full Frame Mirrorless Interchangeable-Lens Camera (Body Only) (ILCE9/B),Black
Amazon logo
$3,498.00

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