Sony A7 III vs Sony a5100
63 Imaging
73 Features
92 Overall
80
89 Imaging
65 Features
74 Overall
68
Sony A7 III vs Sony a5100 Key Specs
(Full Review)
- 24MP - Full frame Sensor
- 3" Tilting Screen
- ISO 100 - 51200 (Expand to 204800)
- Sensor based 5-axis Image Stabilization
- 1/8000s Max Shutter
- 3840 x 2160 video
- Sony E Mount
- 650g - 127 x 96 x 74mm
- Announced February 2018
- Superseded the Sony A7 II
- Later Model is Sony A7 IV
(Full Review)
- 24MP - APS-C Sensor
- 3" Tilting Display
- ISO 100 - 25600
- 1920 x 1080 video
- Sony E Mount
- 283g - 110 x 63 x 36mm
- Released August 2014
- Older Model is Sony a5000
Snapchat Adds Watermarks to AI-Created Images Sony A7 III vs Sony a5100 Overview
Lets look more closely at the Sony A7 III vs Sony a5100, former being a Pro Mirrorless while the other is a Entry-Level Mirrorless and both of them are offered by Sony. The resolution of the A7 III (24MP) and the a5100 (24MP) is very close but the A7 III (Full frame) and a5100 (APS-C) boast totally different sensor sizing.
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modesThe A7 III was released 3 years later than the a5100 and that is a fairly large difference as far as camera technology is concerned. Each of the cameras have different body design with the Sony A7 III being a SLR-style mirrorless camera and the Sony a5100 being a Rangefinder-style mirrorless camera.
Before we go right into a thorough comparison, here is a short synopsis of how the A7 III scores against the a5100 in the way of portability, imaging, features and an overall rating.
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Below is a sample of the gallery pics for Sony Alpha A7 III & Sony Alpha a5100. The complete galleries are provided at Sony A7 III Gallery & Sony a5100 Gallery.
Reasons to pick Sony A7 III over the Sony a5100
| A7 III | a5100 | |||
|---|---|---|---|---|
| Released | February 2018 | August 2014 | Fresher by 43 months |
Reasons to pick Sony a5100 over the Sony A7 III
| a5100 | A7 III |
|---|
Common features in the Sony A7 III and Sony a5100
| A7 III | a5100 | |||
|---|---|---|---|---|
| Focus manually | Very exact focusing | |||
| Display type | Tilting | Tilting | Tilting display | |
| Display dimensions | 3" | 3" | Equal display measurement | |
| Display resolution | 922k | 922k | Exact same display resolution | |
| Selfie screen | Missing selfie screen | |||
| Touch friendly display | Easily navigate |
Sony A7 III vs Sony a5100 Physical Comparison
If you're looking to carry your camera, you have to factor in its weight and dimensions. The Sony A7 III features external dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs) while the Sony a5100 has dimensions of 110mm x 63mm x 36mm (4.3" x 2.5" x 1.4") accompanied by a weight of 283 grams (0.62 lbs).
Check the Sony A7 III vs Sony a5100 in our completely new Camera plus Lens Size Comparison Tool.
Remember, the weight of an ILC will differ dependant on the lens you are utilising at the time. The following is a front view over all size comparison of the A7 III versus the a5100.

Considering dimensions and weight, the portability grade of the A7 III and a5100 is 63 and 89 respectively.
Sony A7 III vs Sony a5100 Sensor Comparison
Normally, it can be difficult to see the contrast in sensor sizing merely by viewing specs. The graphic below may offer you a clearer sense of the sensor sizes in the A7 III and a5100.
As you can plainly see, both of these cameras have the same megapixels but not the same sensor sizing. The A7 III contains the larger sensor which will make obtaining shallow depth of field less difficult. The newer A7 III will have an edge with regard to sensor tech.
Sony A7 III vs Sony a5100 Screen and ViewFinder
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Sony A7 III vs Sony a5100 Specifications
| Sony Alpha A7 III | Sony Alpha a5100 | |
|---|---|---|
| General Information | ||
| Brand | Sony | Sony |
| Model type | Sony Alpha A7 III | Sony Alpha a5100 |
| Category | Pro Mirrorless | Entry-Level Mirrorless |
| Announced | 2018-02-27 | 2014-08-17 |
| Physical type | SLR-style mirrorless | Rangefinder-style mirrorless |
| Sensor Information | ||
| Powered by | Bionz X | Bionz X |
| Sensor type | BSI-CMOS | CMOS |
| Sensor size | Full frame | APS-C |
| Sensor measurements | 35.8 x 23.8mm | 23.5 x 15.6mm |
| Sensor surface area | 852.0mm² | 366.6mm² |
| Sensor resolution | 24MP | 24MP |
| Anti alias filter | ||
| Aspect ratio | 3:2 and 16:9 | 3:2 and 16:9 |
| Highest Possible resolution | 6000 x 4000 | 6000 x 4000 |
| Maximum native ISO | 51200 | 25600 |
| Maximum enhanced ISO | 204800 | - |
| Lowest native ISO | 100 | 100 |
| RAW format | ||
| Lowest enhanced ISO | 50 | - |
| Autofocusing | ||
| Manual focusing | ||
| Touch to focus | ||
| AF continuous | ||
| AF single | ||
| Tracking AF | ||
| AF selectice | ||
| AF center weighted | ||
| Multi area AF | ||
| Live view AF | ||
| Face detection focusing | ||
| Contract detection focusing | ||
| Phase detection focusing | ||
| Total focus points | 693 | 179 |
| Lens | ||
| Lens support | Sony E | Sony E |
| Number of lenses | 121 | 121 |
| Crop factor | 1 | 1.5 |
| Screen | ||
| Screen type | Tilting | Tilting |
| Screen diagonal | 3" | 3" |
| Screen resolution | 922k dots | 922k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch screen | ||
| Viewfinder Information | ||
| Viewfinder type | Electronic | None |
| Viewfinder resolution | 2,359k dots | - |
| Viewfinder coverage | 100 percent | - |
| Viewfinder magnification | 0.78x | - |
| Features | ||
| Minimum shutter speed | 30 seconds | 30 seconds |
| Fastest shutter speed | 1/8000 seconds | 1/4000 seconds |
| Continuous shutter rate | 10.0 frames/s | 6.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Custom WB | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | no built-in flash | 4.00 m (at ISO 100) |
| Flash settings | no built-in flash | Flash off, auto, fill-flaw, slow sync, redeye reduction |
| External flash | ||
| AEB | ||
| WB bracketing | ||
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Supported video resolutions | 3840 x 2160 (30p, 24p) 1920 x 1080 (120p, 60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p) | 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p, 25p), 1280 x 720 (120p), 640 x 480 (30p, 25p) |
| Maximum video resolution | 3840x2160 | 1920x1080 |
| Video file format | MPEG-4, AVCHD, XAVC S, H.264 | MPEG-4, AVCHD, XAVC S |
| Microphone port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | Built-In | Built-In |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 3.1 Gen 1 (5 GBit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environment sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 650 gr (1.43 pounds) | 283 gr (0.62 pounds) |
| Physical dimensions | 127 x 96 x 74mm (5.0" x 3.8" x 2.9") | 110 x 63 x 36mm (4.3" x 2.5" x 1.4") |
| DXO scores | ||
| DXO Overall rating | 96 | 80 |
| DXO Color Depth rating | 25.0 | 23.8 |
| DXO Dynamic range rating | 14.7 | 12.7 |
| DXO Low light rating | 3730 | 1347 |
| Other | ||
| Battery life | 610 images | 400 images |
| Form of battery | Battery Pack | Battery Pack |
| Battery ID | NP-FZ100 | NP-FW50 |
| Self timer | Yes (2 or 10 sec; continuous (3 or 5 exposures)) | Yes (2 or 10 sec, continuous (3-5 shot)) |
| Time lapse shooting | With downloadable app | |
| Storage type | SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo | SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo |
| Card slots | Two | 1 |
| Cost at release | $1,998 | $448 |