Sony A7S III Vs Sony FX3: What Is The Difference?

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Sony a7S III

Body onlyFE 24-70mm f/2.8 GM II67points

Sony FX3

Comparison winnervsvs

122 facts in comparison

Sony a7S III vs Sony FX3Sony a7S IIISony FX3

Why is Sony a7S III better than FX3?

• 132 more focus points?759vs627
• 27.45% more megapixels (main camera)?13 MPvs10.2 MP
• Supports a remote smartphone?
• Has a tilting viewfinder?
• 14.8 mm thinner?69.7 mmvs84.5 mm

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Why is FX3 better than Sony a7S III?

• 59 g lighter?640 gvs699 g
• 19.1 mm shorter?77.8 mmvs96.9 mm

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Which are the most popular comparisons?

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Sony FX3

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Canon EOS R5

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Sony a7S III

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Sony Alpha a9 II

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Sony FX3

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Panasonic Lumix DC-S1H

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Sony a7S III

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Canon EOS R6

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Sony a7S III

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Sony A7C

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Sony a7S III

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Sony Alpha a7 III

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Sony FX3

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Sony Alpha a7 III

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Sony a7S III

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Sony a1

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Sony FX3

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Blackmagic Pocket Cinema Camera 6K Pro

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Sony a7S III

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Sony A7R III

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Sony FX3

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Sony A7C

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Sony a7S III

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Sony Alpha 7S II

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Sony FX3

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Canon EOS 90D

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Sony a7S III

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Sony a7R IV

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Sony FX3

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Sony Alpha a9

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Sony a7S III

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Fujifilm GFX100

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Sony FX3

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Canon EOS R5

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Sony a7S III

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Sony Alpha a9 II

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Sony FX3

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Panasonic Lumix DC-S1H

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Sony a7S III

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Canon EOS R6

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Sony a7S III

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Sony A7C

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Sony a7S III

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Sony Alpha a7 III

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Sony FX3

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Sony Alpha a7 III

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Sony a7S III

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Sony a1

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Sony FX3

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Blackmagic Pocket Cinema Camera 6K Pro

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Sony a7S III

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Sony A7R III

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Sony FX3

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Sony A7C

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Sony a7S III

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Sony Alpha 7S II

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Sony FX3

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Canon EOS 90D

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Sony a7S III

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Sony a7R IV

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Sony FX3

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Sony Alpha a9

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Sony a7S III

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Fujifilm GFX100

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Sony FX3

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Canon EOS R5

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Sony a7S III

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Sony Alpha a9 II

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Sony FX3

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Panasonic Lumix DC-S1H

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Sony a7S III

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Canon EOS R6

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Sony a7S III

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Sony A7C

Price comparison

Cheap alternatives

6

Sony a7R IV + Sony FE 24-105mm f/4 G OSS

7

Sony a7R IV + Sony FE 24-70mm F2.8 GM

8

Sony Alpha a7 III + Sony FE 24-105mm f/4 G OSS

9

Sony Alpha a9 + Sony FE 24-70mm F2.8 GM

10

Sony Alpha a7 III + Sony FE 28-70mm f/3.5-5.6 OSS

1

Sony Alpha 7 IV + Sony FE 24-105mm f/4 G OSS

2

Sony Alpha 7 IV + Sony FE 50mm F1__8

3

Sony Alpha 7 IV + Sony FE 28-70mm F3__5-5__6 OSS

4

Canon EOS R5 + Canon RF 24-105mm f/4L IS USM

5

Sony Alpha 7R III + Sony FE 24-70mm f/4 ZA OSS Vario-Tessar T*

6

Sony a7R IV + Sony FE 24-105mm f/4 G OSS

7

Sony a7R IV + Sony FE 24-70mm F2.8 GM

8

Sony Alpha a7 III + Sony FE 24-105mm f/4 G OSS

9

Sony Alpha a9 + Sony FE 24-70mm F2.8 GM

10

Sony Alpha a7 III + Sony FE 28-70mm f/3.5-5.6 OSS

1

Sony Alpha 7 IV + Sony FE 24-105mm f/4 G OSS

2

Sony Alpha 7 IV + Sony FE 50mm F1__8

3

Sony Alpha 7 IV + Sony FE 28-70mm F3__5-5__6 OSS

4

Canon EOS R5 + Canon RF 24-105mm f/4L IS USM

5

Sony Alpha 7R III + Sony FE 24-70mm f/4 ZA OSS Vario-Tessar T*

6

Sony a7R IV + Sony FE 24-105mm f/4 G OSS

7

Sony a7R IV + Sony FE 24-70mm F2.8 GM

8

Sony Alpha a7 III + Sony FE 24-105mm f/4 G OSS

9

Sony Alpha a9 + Sony FE 24-70mm F2.8 GM

10

Sony Alpha a7 III + Sony FE 28-70mm f/3.5-5.6 OSS

User reviews

Overall rating

Sony a7S III10.01 User reviewsSony a7S III10.0/101 User reviewsWrite a reviewSony FX30 User reviewsFX30 User reviewsWrite a review

Features

Build quality

10.0/10 1 ratingsNo reviews yet 

Video quality

10.0/10 1 ratingsNo reviews yet 

Controls

10.0/10 1 ratingsNo reviews yet 

Low-light performance

10.0/10 1 ratingsNo reviews yet 

Autofocus

10.0/10 1 ratingsNo reviews yet 

Comments

Highest scoreLowest scoreMost helpfulMost recentOldestSony a7S IIISony FX3

Martin

9 months ago

10 / 10

Show original

It's the best in the world

Martin

9 months ago

10 / 10

It's great, very good for video, it has full frame, takes nice photos. The buttons are comfortable. It's Pro version is very good. The lenses it has are the best. You can put a tripod on it, and it has good focusing. It has a bit of artificial intelligence.

Pros

• Video, photos, autofocus, can accommodate tripod, its Pro version, the lenses

Cons

• None

👍Vote0 users found this helpfulWrite a review

Design

Type

MirrorlessSony a7S III

MirrorlessSony FX3

The type of camera.viewfinder

Electronic viewfinder (EVF)Sony a7S III

∅

FX3: Not applicable

The type of viewfinder that the camera has.is weather-sealed (splashproof)✔Sony a7S III✔FX3The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.screen resolution

1440k dots

1440k dots

A higher screen resolution provides a sharper image, making it easier to review your photos.EVF resolution

Unknown. Help us by suggesting a value. (Sony a7S III)

∅

FX3: Not applicable

An electronic viewfinder (EVF) with a higher resolution provides a sharper image, producing a view comparable in quality with the one displayed on an optical viewfinder.Has a flip-out screen✔Sony a7S III✔FX3Flip-out screens can be useful for tricky shots.viewfinder coverage

100%

Unknown. Help us by suggesting a value. (Sony FX3)

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.screen size

3"

2.95"

The size of the screen (measured diagonally).weight

699 g

640 g

The weight.+ Show more +

Optics

sensor size

Full frame

Full frame

One of the most important aspects of a camera is the size of its sensor. A larger sensor will capture more light, which results in improved low-light performance, dynamic range, and general image quality.lens mount

Sony ESony a7S III

Sony ESony FX3

The type of mount that connects the lens to the camera.focus points

759

627

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.megapixels (main camera)

13 MP

10.2 MP

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.maximum ISO

102400 ISO

102400 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.maximum expanded ISO

409600 ISO

409600 ISO

Expanded ISO allows you to go beyond the native ISO. It does this by digitally enhancing the image output. The resulting image will have less quality than when staying within the native ISO range, but it can be useful in certain situations.has sensor shift stabilization✔Sony a7S III✔FX3With sensor shift, the image sensor (rather than the lens) moves to counterbalance any vibration of the camera. This means the image will be stabilised regardless of what lens is being used.continuous shooting (mechanical)

10 fps

Unknown. Help us by suggesting a value. (Sony FX3)

The number of frames per second that can be captured in continuous drive mode when using the mechanical shutter.has AF tracking✔Sony a7S III✔FX3With 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.+ Show more +

Videography

video recording (main camera)

2160 x 120 fps

2160 x 120 fps

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.Has phase-detection autofocus for videos✔Sony a7S III✔FX3A 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.has continuous autofocus when recording movies✔Sony a7S III✔FX3When recording movies they stay focussed and sharp.has a microphone input✔Sony a7S III✔FX3A microphone port allows connecting external high-end or specialized microphones.has a socket for a 3.5 mm audio jack✔Sony a7S III✔FX3With a standard mini jack socket, you can use the device with most headphones.has a stereo microphone✔Sony a7S III✔FX3A stereo microphone allows to record audio files or movies in stereo without an external microphone.Has timelapse function✔Sony a7S III✔FX3A 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.movie bitrate

600 Mbps

600 Mbps

The higher the movie recording bitrate the better the movie quality with more and crispier details and less compression artifacts.number of microphones

Unknown. Help us by suggesting a value. (Sony a7S III)

1

More microphones result in better sound quality and enable the device to filter out background noise.+ Show more +

Battery

Battery life (CIPA)

600 shots

600 shots

CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies.has a removable battery✔Sony a7S III✔FX3The battery is removable and can be replaced by the user if broken.has a rechargeable battery✔Sony a7S III✔FX3The battery can be recharged and used over again.has a battery level indicator✔Sony a7S III✔FX3An indicator shows you when the device has low battery.battery power

2280 mAh

2280 mAh

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.

Features

release date

5 years ago09/01/2020Sony a7S III

4 years ago02/23/2021Sony FX3

The date the product first became available for purchase.processor

Unknown. Help us by suggesting a value. (Sony a7S III)

Bionz XRSony FX3

The image processor used in the camera.supports Wi-Fi✔Sony a7S III✔FX3The device can connect to Wi-Fi.Has Bluetooth✔Sony a7S III✔FX3Bluetooth is a wireless technology that allows you to easily transfer data between different devices, such as smartphones, tablets and computers.Has dual card slots✔Sony a7S III✔FX3It has two memory card slots, allowing you to store more photos without switching cards. This is particularly useful on long shoots when you need more space.has pixel shift shot✖Sony a7S III

Unknown. Help us by suggesting a value. (Sony FX3)

The camera can take a series of shots, shifting the sensor slightly with each one. These can then be combined to create an extremely high-resolution image. It’s particularly useful for things like photographing artwork.shoots raw✔Sony a7S III✔FX3A raw image file contains minimally processed data from the image sensor. Raw files are so named because they are not yet processed and therefore are not ready to be printed or edited with a bitmap graphics editor.supports lossless compressed raw

Unknown. Help us by suggesting a value. (Sony a7S III)

Unknown. Help us by suggesting a value. (Sony FX3)

It is capable of shooting stills in a lossless compressed raw format. This has all the advantages of shooting raw, while taking up much less storage space. The smaller file size also allows quicker read/write speeds.Wi-Fi version

Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)

Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)

The Wi-Fi versions supported by the device.+ Show more +

Miscellaneous

USB version

3.2

3.2

Newer USB versions are faster and have better power management.

Price comparison

Which are the best cameras?

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Sony a7S III + Sony FE 24-70mm f/2.8 GM II

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Canon EOS R5 + Canon RF 85mm f/2 Macro IS STM

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Canon EOS R5 + Canon RF 15-35mm f/2.8L IS USM

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Canon EOS R5 + Canon RF 24-105mm f/4L IS USM

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Canon EOS R5 II + Canon RF 24-105mm f/4L IS USM

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Sony Alpha 7 IV + Sony FE 50mm F1__8

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Nikon Z8 + Nikon Nikkor Z 24-120mm f/4 S

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Canon EOS R5 + Canon RF 28-70mm f/2L USM

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Sony a7S III + Sony FE 24-70mm f/2.8 GM II

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Canon EOS R5 + Canon RF 85mm f/2 Macro IS STM

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Canon EOS R5 + Canon RF 15-35mm f/2.8L IS USM

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Canon EOS R5 + Canon RF 24-105mm f/4L IS USM

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Canon EOS R5 II + Canon RF 24-105mm f/4L IS USM

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Sony Alpha 7 IV + Sony FE 50mm F1__8

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Sony Alpha 7 IV + Sony FE 24-105mm f/4 G OSS

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Nikon Z8 + Nikon Nikkor Z 24-120mm f/4 S

5

Canon EOS R5 + Canon RF 28-70mm f/2L USM

6

Sony a7S III + Sony FE 24-70mm f/2.8 GM II

7

Canon EOS R5 + Canon RF 85mm f/2 Macro IS STM

8

Sony Alpha 7 IV + Sony FE 28-70mm F3__5-5__6 OSS

9

Canon EOS R5 + Canon RF 15-35mm f/2.8L IS USM

10

Canon EOS R5 + Canon RF 24-105mm f/4L IS USM

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