Sony A9 III vs RX1R III
The Sony Alpha A9 III and the Sony Cyber-shot DSC-RX1R III are two digital cameras that were revealed to the public, respectively, in November 2023 and July 2025. The A9 III is a mirrorless interchangeable lens camera, while the RX1R III is a fixed lens compact. Both cameras are equipped with a full frame sensor. The A9 III has a resolution of 24 megapixels, whereas the RX1R III provides 60.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check A9 III price at
amazon.com

Check RX1R III price at
amazon.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A9 III and the Sony Cyber-shot DSC-RX1R III? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
Body comparison
An illustration of the physical size and weight of the Sony A9 III and the Sony RX1R III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX1R III is considerably smaller (42 percent) than the Sony A9 III. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX1R III has a lens built in, whereas the A9 III is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the A9 III and their specifications in the Sony FE Lens Catalog.
Concerning battery life, the A9 III gets 530 shots out of its Sony NP-FZ100 battery, while the RX1R III can take 300 images on a single charge of its Sony NP-FW50 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Sony A9 III | 136 mm | 97 mm | 83 mm | 702 g | 530 | Y | Nov 2023 | US$ 5 999 | amazon.com | |
| 2. | Sony RX1R III | 113 mm | 68 mm | 88 mm | 498 g | 300 | Y | Jul 2025 | US$ 5 099 | amazon.com | |
| 3. | Canon R6 Mark II | 138 mm | 98 mm | 88 mm | 670 g | 450 | Y | Nov 2022 | US$ 2 499 | amazon.com | |
| 4. | Fujifilm GFX 100RF | 134 mm | 90 mm | 77 mm | 735 g | 820 | Y | Mar 2025 | US$ 4 899 | amazon.com | |
| 5. | Fujifilm X-H2S | 136 mm | 93 mm | 85 mm | 660 g | 580 | Y | May 2022 | US$ 2 499 | amazon.com | |
| 6. | Fujifilm X100V | 128 mm | 75 mm | 53 mm | 478 g | 420 | Y | Feb 2020 | US$ 1 399 | ebay.com | |
| 7. | Leica Q3 | 130 mm | 80 mm | 93 mm | 743 g | 350 | Y | May 2023 | US$ 5 999 | amazon.com | |
| 8. | Panasonic S5 II | 134 mm | 102 mm | 90 mm | 740 g | 370 | Y | Jan 2023 | US$ 1 999 | amazon.com | |
| 9. | Sigma fp L | 113 mm | 70 mm | 45 mm | 427 g | 240 | Y | Mar 2021 | US$ 2 499 | amazon.com | |
| 10. | Sony A1 | 129 mm | 97 mm | 81 mm | 737 g | 530 | Y | Jan 2021 | US$ 6 499 | amazon.com | |
| 11. | Sony A1 II | 136 mm | 97 mm | 83 mm | 743 g | 520 | Y | Nov 2024 | US$ 6 499 | amazon.com | |
| 12. | Sony A7 II | 127 mm | 96 mm | 60 mm | 599 g | 350 | Y | Nov 2014 | US$ 1 999 | ebay.com | |
| 13. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | US$ 1 999 | amazon.com | |
| 14. | Sony A7R V | 131 mm | 97 mm | 82 mm | 723 g | 530 | Y | Oct 2022 | US$ 3 899 | amazon.com | |
| 15. | Sony A9 | 127 mm | 96 mm | 63 mm | 673 g | 650 | Y | Apr 2017 | US$ 4 499 | ebay.com | |
| 16. | Sony A9 II | 129 mm | 96 mm | 76 mm | 678 g | 690 | Y | Oct 2019 | US$ 4 499 | amazon.com | |
| 17. | Sony RX1R II | 113 mm | 65 mm | 72 mm | 507 g | 220 | n | Oct 2015 | US$ 3 299 | ebay.com | |
| Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The RX1R III was launched at a lower price than the A9 III, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.
Sensor comparison
The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
In terms of chip-set technology, the A9 III uses a more advanced image processing engine (Dual BIONZ XR) than the RX1R III (BIONZ XR), with benefits for noise reduction, color accuracy, and processing speed.

With 60.2MP, the RX1R III offers a higher resolution than the A9 III (24MP), but the RX1R III has smaller individual pixels (pixel pitch of 3.76μm versus 5.94μm for the A9 III). Yet, the RX1R III is a somewhat more recent model (by 1 year and 8 months) than the A9 III, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the RX1R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony RX1R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX1R III for good quality output (200 dots per inch) amounts to 47.5 x 31.7 inches or 120.7 x 80.5 cm, for very good quality (250 dpi) 38 x 25.3 inches or 96.6 x 64.4 cm, and for excellent quality (300 dpi) 31.7 x 21.1 inches or 80.5 x 53.6 cm. The corresponding values for the Sony A9 III are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.
The Sony Alpha A9 III has a native sensitivity range from ISO 250 to ISO 25600, which can be extended to ISO 125-51200. The corresponding ISO settings for the Sony Cyber-shot DSC-RX1R III are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.
In terms of underlying technology, the A9 III is build around a Stacked CMOS sensor, while the RX1R III uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Sony A9 III | Full Frame | 24.0 | 6000 | 4000 | 4K/120p | 25.4 | 14.7 | 3243 | 96 | |
| 2. | Sony RX1R III | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 25.4 | 14.9 | 3417 | 97 | |
| 3. | Canon R6 Mark II | Full Frame | 24.0 | 6000 | 4000 | 4k/60p | 25.4 | 14.6 | 3154 | 96 | |
| 4. | Fujifilm GFX 100RF | Medium Format | 101.8 | 11648 | 8736 | 4K/30p | 25.9 | 15.1 | 3805 | 101 | |
| 5. | Fujifilm X-H2S | APS-C | 26.0 | 6240 | 4160 | 6.2k/30p | 24.3 | 13.9 | 2224 | 86 | |
| 6. | Fujifilm X100V | APS-C | 26.0 | 6240 | 4160 | 4K/30p | 24.2 | 13.6 | 1996 | 84 | |
| 7. | Leica Q3 | Full Frame | 60.3 | 9528 | 6328 | 8K/30p | 25.4 | 14.7 | 3216 | 96 | |
| 8. | Panasonic S5 II | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.6 | 3158 | 96 | |
| 9. | Sigma fp L | Full Frame | 60.2 | 9520 | 6328 | 4K/30p | 25.3 | 14.4 | 3001 | 96 | |
| 10. | Sony A1 | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.9 | 14.5 | 3163 | 98 | |
| 11. | Sony A1 II | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.4 | 14.8 | 3363 | 97 | |
| 12. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
| 13. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
| 14. | Sony A7R V | Full Frame | 60.2 | 9504 | 6336 | 8k/24p | 26.5 | 14.8 | 3187 | 100 | |
| 15. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 | |
| 16. | Sony A9 II | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.0 | 3434 | 93 | |
| 17. | Sony RX1R II | Full Frame | 42.2 | 7952 | 5304 | 1080/60p | 25.8 | 13.9 | 3204 | 97 | |
| Note: DXO values in italics represent estimates based on sensor size and age. | |||||||||||
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A9 III provides a higher frame rate than the RX1R III. It can shoot video footage at 4K/120p, while the RX1R III is limited to 4K/30p.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the A9 III offers a substantially higher resolution than the one in the RX1R III (9440k vs 2360k dots). The adjacent table lists some of the other core features of the Sony A9 III and Sony RX1R III along with similar information for a selection of comparators.

| Camera Model |
Viewfinder (Type or 000 dots) |
Control Panel (yes/no) |
LCD Specifications (inch/000 dots) |
LCD Attach- ment |
Touch Screen (yes/no) |
Max Shutter Speed * |
Max Shutter Flaps * |
Built-in Flash (yes/no) |
Built-in Image Stab |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Sony A9 III | 9440 | n | 3.2 / 2100 | full-flex | Y | 1/80000s | 120.0/s | n | Y | |
| 2. | Sony RX1R III | 2360 | n | 3.0 / 2360 | fixed | Y | 1/4000s | 5.0/s | n | n | |
| 3. | Canon R6 Mark II | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 4. | Fujifilm GFX 100RF | 5760 | n | 3.2 / 2100 | tilting | Y | 1/4000s | 6.0/s | n | n | |
| 5. | Fujifilm X-H2S | 5760 | Y | 3.0 / 1620 | swivel | Y | 1/8000s | 15.0/s | n | Y | |
| 6. | Fujifilm X100V | 3690 | n | 3.0 / 1620 | tilting | Y | 1/4000s | 11.0/s | n | n | |
| 7. | Leica Q3 | 5760 | n | 3.0 / 1840 | tilting | Y | 1/2000s | 15.0/s | n | Y | |
| 8. | Panasonic S5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 9.0/s | n | Y | |
| 9. | Sigma fp L | optional | n | 3.2 / 2100 | fixed | Y | 1/8000s | 10.0/s | n | n | |
| 10. | Sony A1 | 9437 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 30.0/s | n | Y | |
| 11. | Sony A1 II | 9437 | n | 3.2 / 2100 | full-flex | Y | 1/8000s | 30.0/s | n | Y | |
| 12. | Sony A7 II | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | Y | |
| 13. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
| 14. | Sony A7R V | 9440 | n | 3.2 / 2100 | full-flex | Y | 1/8000s | 10.0/s | n | Y | |
| 15. | Sony A9 | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
| 16. | Sony A9 II | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
| 17. | Sony RX1R II | 2360 | n | 3.0 / 1229 | tilting | n | 1/4000s | 5.0/s | n | n | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, both cameras under consideration feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Sony A9 III and the Sony RX1R III both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The A9 III writes its imaging data to CFexpress (type A) or SDXC cards, while the RX1R III uses SDXC cards. The A9 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the RX1R III only has one slot. Both cameras support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s.
Connectivity comparison
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Sony Alpha A9 III and Sony Cyber-shot DSC-RX1R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

| Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Sony A9 III | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 2. | Sony RX1R III | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 3. | Canon R6 Mark II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 4. | Fujifilm GFX 100RF | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 5. | Fujifilm X-H2S | Y | stereo / mono | Y | Y | full | 3.0 | Y | - | Y | |
| 6. | Fujifilm X100V | Y | stereo / mono | Y | - | micro | 3.1 | Y | - | Y | |
| 7. | Leica Q3 | Y | stereo / mono | - | - | micro | 3.1 | Y | - | Y | |
| 8. | Panasonic S5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 9. | Sigma fp L | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | - | |
| 10. | Sony A1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 11. | Sony A1 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 12. | Sony A7 II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 13. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
| 14. | Sony A7R V | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 15. | Sony A9 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | Y | |
| 16. | Sony A9 II | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
| 17. | Sony RX1R II | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - |
Studio photographers will appreciate that the Sony A9 III (unlike the RX1R III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the A9 III and the RX1R III are recent models that are part of the current product line-up. The A9 III replaced the earlier Sony A9 II, while the RX1R III followed on from the Sony RX1R II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Sony website.
Review summary
So what is the bottom line? Which of the two cameras – the Sony A9 III or the Sony RX1R III – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Sony Alpha A9 III:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better jpgs: Has a more modern image processing engine (Dual BIONZ XR vs BIONZ XR).
- Better video: Provides higher movie framerates (4K/120p versus 4K/30p).
- More detailed viewfinder: Has higher resolution electronic viewfinder (9440k vs 2360k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.9x vs 0.7x).
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/80000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (120 vs 5 flaps/sec) to capture the decisive moment.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Longer lasting: Can take more shots (530 versus 300) on a single battery charge.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been on the market for longer (launched in November 2023).
Arguments in favor of the Sony Cyber-shot DSC-RX1R III:
- More detail: Has more megapixels (60.2 vs 24MP), which boosts linear resolution by 58%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- More detailed LCD: Has a higher resolution rear screen (2360k vs 2100k dots).
- Ready to shoot: Has an integrated lens, whereas the A9 III necessitates an extra lens.
- More compact: Is smaller (113x68mm vs 136x97mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the A9 III).
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Was introduced somewhat (1 year and 8 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the A9 III is the clear winner of the match-up (17 : 8 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Sony A9 III and the Sony RX1R III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Prime Lens Compact Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the A9 III or the RX1R III. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
Expert reviews
This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Sony A9 III | 4.5/5 | .. | .. | 91/100 | .. | .. | Nov 2023 | US$ 5 999 | amazon.com | |
| 2. | Sony RX1R III | .. | .. | .. | .. | .. | .. | Jul 2025 | US$ 5 099 | amazon.com | |
| 3. | Canon R6 Mark II | 5/5 | + + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Nov 2022 | US$ 2 499 | amazon.com | |
| 4. | Fujifilm GFX 100RF | .. | .. | .. | .. | .. | .. | Mar 2025 | US$ 4 899 | amazon.com | |
| 5. | Fujifilm X-H2S | 5/5 | + | 5/5 | 90/100 | 5/5 | 5/5 | May 2022 | US$ 2 499 | amazon.com | |
| 6. | Fujifilm X100V | 5/5 | + + | 4.5/5 | 86/100 | 5/5 | 4.5/5 | Feb 2020 | US$ 1 399 | ebay.com | |
| 7. | Leica Q3 | 5/5 | .. | 4.5/5 | .. | .. | 4.5/5 | May 2023 | US$ 5 999 | amazon.com | |
| 8. | Panasonic S5 II | 4.5/5 | + + | 5/5 | 90/100 | 4.5/5 | 5/5 | Jan 2023 | US$ 1 999 | amazon.com | |
| 9. | Sigma fp L | 4/5 | .. | 4/5 | .. | 4/5 | 4/5 | Mar 2021 | US$ 2 499 | amazon.com | |
| 10. | Sony A1 | 5/5 | o | 4.5/5 | 93/100 | 4.5/5 | 5/5 | Jan 2021 | US$ 6 499 | amazon.com | |
| 11. | Sony A1 II | .. | .. | .. | .. | .. | .. | Nov 2024 | US$ 6 499 | amazon.com | |
| 12. | Sony A7 II | 5/5 | + | 4/5 | 82/100 | 4.5/5 | 5/5 | Nov 2014 | US$ 1 999 | ebay.com | |
| 13. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | US$ 1 999 | amazon.com | |
| 14. | Sony A7R V | 5/5 | + + | 4.5/5 | 92/100 | .. | .. | Oct 2022 | US$ 3 899 | amazon.com | |
| 15. | Sony A9 | 5/5 | + + | 4.8/5 | 89/100 | 5/5 | 5/5 | Apr 2017 | US$ 4 499 | ebay.com | |
| 16. | Sony A9 II | .. | .. | 5/5 | 90/100 | 5/5 | 5/5 | Oct 2019 | US$ 4 499 | amazon.com | |
| 17. | Sony RX1R II | 5/5 | .. | .. | 82/100 | .. | 4.5/5 | Oct 2015 | US$ 3 299 | ebay.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check A9 III price at
amazon.com

Check RX1R III price at
amazon.com
Other camera comparisons
Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 70D vs Sony A9 III
- Canon XS vs Sony A9 III
- Fujifilm X-T30 II vs Sony A9 III
- Fujifilm X100F vs Sony RX1R III
- Nikon B600 vs Sony A9 III
- Nikon D700 vs Sony RX1R III
- Nikon Z fc vs Sony RX1R III
- Olympus E-M1X vs Sony A9 III
- Panasonic GH5 II vs Sony RX1R III
- Sony A7 IV vs Sony RX1R III
- Sony A9 III vs Sony ZV-E1
- Sony NEX-3 vs Sony RX1R III
Specifications: Sony A9 III vs Sony RX1R III
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
| Camera Model | Sony A9 III | Sony RX1R III |
|---|---|---|
| Camera Type | Mirrorless system camera | Fixed lens compact camera |
| Camera Lens | Sony E mount lenses | 35mm f/2.0 |
| Launch Date | November 2023 | July 2025 |
| Launch Price | USD 5,999 | USD 5,099 |
| Sensor Specs | Sony A9 III | Sony RX1R III |
| Sensor Technology | Stacked CMOS | BSI-CMOS |
| Sensor Format | Full Frame Sensor | Full Frame Sensor |
| Sensor Size | 35.6 x 23.8 mm | 35.7 x 23.8 mm |
| Sensor Area | 847.28 mm2 | 849.66 mm2 |
| Sensor Diagonal | 42.8 mm | 42.9 mm |
| Crop Factor | 1.0x | 1.0x |
| Sensor Resolution | 24 Megapixels | 60.2 Megapixels |
| Image Resolution | 6000 x 4000 pixels | 9504 x 6336 pixels |
| Pixel Pitch | 5.94 μm | 3.76 μm |
| Pixel Density | 2.83 MP/cm2 | 7.09 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 4K/120p Video | 4K/30p Video |
| ISO Setting | 250 - 25,600 ISO | 100 - 32,000 ISO |
| ISO Boost | 125 - 51,200 ISO | 50 - 102,400 ISO |
| Image Processor | Dual BIONZ XR | BIONZ XR |
| Screen Specs | Sony A9 III | Sony RX1R III |
| Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.9x | 0.7x |
| Viewfinder Resolution | 9440k dots | 2360k dots |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.2inch | 3.0inch |
| LCD Resolution | 2100k dots | 2360k dots |
| LCD Attachment | Fully flexible screen | Fixed screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Sony A9 III | Sony RX1R III |
| Focus System | On-Sensor Phase-detect | On-Sensor Phase-detect |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/80000s | 1/4000s |
| Continuous Shooting | 120 shutter flaps/s | 5 shutter flaps/s |
| Electronic Shutter | up to 1/80000s | up to 1/8000s |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | In-body stabilization | no handshake reduction |
| Fill Flash | no On-Board Flash | no On-Board Flash |
| Storage Medium | CFexA or SDXC cards | SDXC cards |
| Single or Dual Card Slots | Dual card slots | Single card slot |
| UHS card support | UHS-II | UHS-II |
| Connectivity Specs | Sony A9 III | Sony RX1R III |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | no PC Sync |
| USB Connector | USB 3.2 | USB 3.2 |
| HDMI Port | full HDMI | micro HDMI |
| Microphone Port | External MIC port | External MIC port |
| Headphone Socket | Headphone port | Headphone port |
| Wifi Support | Wifi built-in | Wifi built-in |
| Bluetooth Support | Bluetooth built-in | Bluetooth built-in |
| Body Specs | Sony A9 III | Sony RX1R III |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Sony NP-FZ100 | Sony NP-FW50 |
| Battery Life (CIPA) | 530 shots per charge | 300 shots per charge |
| In-Camera Charging | USB charging | USB charging |
| Body Dimensions |
136 x 97 x 83 mm (5.4 x 3.8 x 3.3 in) |
113 x 68 x 88 mm (4.4 x 2.7 x 3.5 in) |
| Camera Weight | 702 g (24.8 oz) | 498 g (17.6 oz) |

Check A9 III price at
amazon.com

Check RX1R III price at
amazon.com
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