Sony a7 III vs Sony α7R
The bottom line
Same line, different generation: the Sony a7 III (2018) moves ahead on burst speed (10fps vs 4fps), in-body stabilisation and subject-detection AF. If those newer features aren't ones you'll actually use, the Sony α7R gives you most of the experience for less.
Choose the Sony a7 III if…
- ✓You shoot action, sports or wildlife — 10fps burst plus dedicated subject-tracking AF keeps up with fast, erratic movement where 4fps would drop frames.
- ✓You shoot video seriously — it brings 10-bit internal colour, Log for gradable footage and both mic and headphone jacks for monitored audio.
- ✓You shoot handheld — in-body stabilisation lets you use slower shutter speeds and steadies video, which the other body can't do without a stabilised lens.
- ✓You shoot in low light or indoors — a higher native ISO ceiling (51,200) and AF that focuses down to -3 EV give it the edge after dark.
Choose the Sony α7R if…
- ✓You want maximum detail for landscapes, studio or large prints — 36.4MP resolves noticeably more than 24.2MP and gives more cropping latitude.
- ✓You value portability — at 465g (1.03 lb) it's noticeably lighter than the 650g (1.43 lb) alternative for travel and all-day carry.
Where they differ
- ›Video: the Sony a7 III is the stronger video tool — 4K up to 30p, 10-bit internal and Log.
- ›Burst: the Sony a7 III shoots 10fps to the Sony α7R's 4fps — the gap that decides whether you nail the peak moment in sports and wildlife.
- ›Price: the Sony a7 III launched at $1,999, $300 under the Sony α7R — money that could go toward glass.
- ›Stabilisation: only the Sony a7 III has in-body IS — slower handheld shutter speeds and steadier video without relying on stabilised lenses.
- ›Card slots: the Sony a7 III has dual slots for instant backup — the reliability paid work depends on.
- ›Weight: the Sony α7R is 465g (1.03 lb) vs 650g (1.43 lb) — 185g you'll feel on a long day out.
Frequently asked
Is the Sony a7 III or the Sony α7R better?
Same line, different generation: the Sony a7 III (2018) moves ahead on burst speed (10fps vs 4fps), in-body stabilisation and subject-detection AF. If those newer features aren't ones you'll actually use, the Sony α7R gives you most of the experience for less.
Who should choose the Sony a7 III?
Choose the Sony a7 III if you shoot action, sports or wildlife — 10fps burst plus dedicated subject-tracking AF keeps up with fast, erratic movement where 4fps would drop frames. Choose it if you shoot video seriously — it brings 10-bit internal colour, Log for gradable footage and both mic and headphone jacks for monitored audio. Choose it if you shoot handheld — in-body stabilisation lets you use slower shutter speeds and steadies video, which the other body can't do without a stabilised lens. Choose it if you shoot in low light or indoors — a higher native ISO ceiling (51,200) and AF that focuses down to -3 EV give it the edge after dark.
Who should choose the Sony α7R?
Choose the Sony α7R if you want maximum detail for landscapes, studio or large prints — 36.4MP resolves noticeably more than 24.2MP and gives more cropping latitude. Choose it if you value portability — at 465g (1.03 lb) it's noticeably lighter than the 650g (1.43 lb) alternative for travel and all-day carry.
What is the main difference between the Sony a7 III and the Sony α7R?
Video: the Sony a7 III is the stronger video tool — 4K up to 30p, 10-bit internal and Log.
| Product | ||
|---|---|---|
| Imaging | ||
| Sensor Type | BSI CMOS | CMOS |
| Sensor Size | Full-Frame | Full-Frame |
| Image Processor | BIONZ X | BIONZ X |
| Effective Resolution | 24.2 MP | 36.4 MP |
| Lens Mount | Sony E | Sony E |
| Exposure Control | ||
| ISO Range (Native) | 100 – 51200 | 100 – 25600 |
| ISO Range (Extended) | 50 – 204800 | 50 – 25600 |
| Mechanical Shutter | 1/8000 | 1/8000 |
| Electronic Shutter | 1/8000 | − |
| Flash Sync Speed | 1/250 | 1/250 |
| Built-in Flash | No | No |
| Still Image Capture | ||
| Continuous Shooting | 10 fps | 4 fps |
| Video Capture | ||
| Max Resolution | 4K | 1080p |
| 8K Recording | − | − |
| 4K Recording | Up to 30p | − |
| 1080p Recording | Up to 120p | Up to 60p |
| 10-bit Internal | Yes | No |
| Recording Limit | 29 min | 29 min |
| Log Profiles | S-Log3 / HLG / S-Cinetone | − |
| Built-in Mic | Stereo | Stereo |
| Headphone Jack | Yes | No |
| Mic Input | Yes | Yes |
| HDMI Output | Micro (Type D) | Micro (Type D) |
| Focus | ||
| Phase Detect Points | 693 | 0 |
| Contrast Detect Points | 425 | 25 |
| Low Light AF | -3 EV | -1 EV |
| Eye AF | Yes | No |
| Animal AF | Yes | No |
| Vehicle AF | No | No |
| Viewfinder | ||
| EVF Type | OLED | OLED |
| EVF Resolution | 2.36M dots | 2.36M dots |
| EVF Magnification | 0.78x | 0.71x |
| Monitor | ||
| LCD Size | 3" | 3" |
| LCD Resolution | 0.92M dots | 0.92M dots |
| LCD Type | Tilting | Tilting |
| Touch Screen | Yes | No |
| Interface | ||
| Wi-Fi | Wi-Fi 5 | Wi-Fi 4 |
| Bluetooth | v4.2 | − |
| USB | USB-C 3.1 Gen 1 | Micro USB 2.0 |
| Memory Card Slots | 2x SD (1x UHS-II) | 1x SD UHS-I |
| GPS | No | No |
| General | ||
| Price (MSRP) | $1,999 | $2,299 |
| Body Material | Magnesium Alloy | Magnesium Alloy |
| Dimensions | 126.9×95.6×73.7 mm | 126.9×94.4×48.2 mm |
| Weight | 650g (1.43 lb) | 465g (1.03 lb) |
| Weather Sealed | Yes | Yes |
| In-Body Stabilization | Yes | No |
| Battery Life (EVF) | 610 shots | 250 shots |
| Battery Life (LCD) | 710 shots | 270 shots |
| Battery Type | NP-FZ100 | NP-FW50 |
