Canon R1 vs Panasonic GH3
The Canon EOS R1 and the Panasonic Lumix DMC-GH3 are two digital cameras that were revealed to the public, respectively, in July 2024 and September 2012. Both the R1 and the GH3 are mirrorless interchangeable lens cameras that are based on a full frame (R1) and a Four Thirds (GH3) sensor. The Canon has a resolution of 24 megapixels, whereas the Panasonic provides 15.9 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check R1 price at
amazon.com

Check GH3 offers at
ebay.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R1 and the Panasonic Lumix DMC-GH3? 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
The physical size and weight of the Canon R1 and the Panasonic GH3 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side 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 Panasonic GH3 is considerably smaller (48 percent) than the Canon R1. Moreover, the GH3 is substantially lighter (51 percent) than the R1. 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 since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
Concerning battery life, the R1 gets 1330 shots out of its Canon LP-E19 battery, while the GH3 can take 540 images on a single charge of its Panasonic DMW-BLF19 power pack. As can be seen in the images above, the R1 has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the GH3, Panasonic provides the DMW-BGGH3 vertical grip as an optional accessory (see here on ebay). The power pack in the R1 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon R1 | 158 mm | 150 mm | 87 mm | 1115 g | 1330 | Y | Jul 2024 | US$ 6 299 | amazon.com | |
| 2. | Panasonic GH3 | 133 mm | 93 mm | 82 mm | 550 g | 540 | Y | Sep 2012 | US$ 1 299 | ebay.com | |
| 3. | Canon R3 | 150 mm | 143 mm | 87 mm | 1015 g | 760 | Y | Sep 2021 | US$ 5 999 | amazon.com | |
| 4. | Canon R5 Mark II | 138 mm | 98 mm | 88 mm | 746 g | 340 | Y | Jul 2024 | US$ 4 299 | amazon.com | |
| 5. | Canon R6 | 138 mm | 98 mm | 88 mm | 680 g | 360 | Y | Jul 2020 | US$ 2 499 | amazon.com | |
| 6. | Canon R6 Mark II | 138 mm | 98 mm | 88 mm | 670 g | 450 | Y | Nov 2022 | US$ 2 499 | amazon.com | |
| 7. | Canon R8 | 133 mm | 86 mm | 70 mm | 461 g | 220 | n | Feb 2023 | US$ 1 499 | amazon.com | |
| 8. | Leica SL3-S | 141 mm | 108 mm | 85 mm | 852 g | 315 | Y | Jan 2025 | US$ 5 299 | amazon.com | |
| 9. | Nikon Z9 | 149 mm | 150 mm | 91 mm | 1340 g | 740 | Y | Oct 2021 | US$ 5 499 | amazon.com | |
| 10. | Nikon Zf | 144 mm | 103 mm | 49 mm | 710 g | 380 | Y | Sep 2023 | US$ 1 999 | amazon.com | |
| 11. | Olympus E-M1 | 130 mm | 94 mm | 63 mm | 497 g | 350 | Y | Sep 2013 | US$ 1 399 | ebay.com | |
| 12. | Olympus E-M5 II | 124 mm | 85 mm | 45 mm | 469 g | 310 | Y | Feb 2015 | US$ 1 099 | ebay.com | |
| 13. | Panasonic G5 | 120 mm | 83 mm | 71 mm | 396 g | 320 | n | Jul 2012 | US$ 599 | ebay.com | |
| 14. | Panasonic GH2 | 124 mm | 90 mm | 76 mm | 442 g | 330 | n | Sep 2010 | US$ 899 | ebay.com | |
| 15. | Panasonic GH4 | 133 mm | 93 mm | 84 mm | 560 g | 500 | Y | Feb 2014 | US$ 1 499 | ebay.com | |
| 16. | Panasonic S5 II | 134 mm | 102 mm | 90 mm | 740 g | 370 | Y | Jan 2023 | US$ 1 999 | amazon.com | |
| 17. | Sony A9 III | 136 mm | 97 mm | 83 mm | 702 g | 530 | Y | Nov 2023 | US$ 5 999 | amazon.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 naturally be influenced heavily by the price. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The GH3 was launched at a markedly lower price (by 79 percent) than the R1, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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.
Of the two cameras under consideration, the Canon R1 features a full frame sensor and the Panasonic GH3 a Four Thirds sensor. The sensor area in the GH3 is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the R1 has a native 3:2 aspect ratio, while the one in the GH3 offers a 4:3 aspect.

With 24MP, the R1 offers a higher resolution than the GH3 (15.9MP), but the R1 nevertheless has larger individual pixels (pixel pitch of 6.00μm versus 3.76μm for the GH3) due to its larger sensor. Moreover, the R1 is a much more recent model (by 11 years and 10 months) than the GH3, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.
The resolution advantage of the Canon R1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the R1 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Panasonic GH3 are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.
The R1 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS R1 has a native sensitivity range from ISO 100 to ISO 102400, which can be extended to ISO 50-409600. The corresponding ISO settings for the Panasonic Lumix DMC-GH3 are ISO 200 to ISO 12800, with the possibility to increase the ISO range to 125-25600.
In terms of underlying technology, the R1 is build around a Stacked BSI-CMOS sensor, while the GH3 uses a 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. | Canon R1 | Full Frame | 24.0 | 6000 | 4000 | 6K/60p | 25.4 | 14.8 | 3332 | 97 | |
| 2. | Panasonic GH3 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 22.7 | 12.4 | 812 | 71 | |
| 3. | Canon R3 | Full Frame | 24.0 | 6000 | 4000 | 6K/60p | 25.0 | 14.7 | 4086 | 96 | |
| 4. | Canon R5 Mark II | Full Frame | 44.8 | 8192 | 5464 | 8k/60p | 25.4 | 14.8 | 3332 | 97 | |
| 5. | Canon R6 | Full Frame | 20.0 | 5472 | 3648 | 4k/60p | 24.2 | 14.3 | 3394 | 90 | |
| 6. | Canon R6 Mark II | Full Frame | 24.0 | 6000 | 4000 | 4k/60p | 25.4 | 14.6 | 3154 | 96 | |
| 7. | Canon R8 | Full Frame | 24.0 | 6000 | 4000 | 4k/60p | 24.5 | 14.7 | 3295 | 93 | |
| 8. | Leica SL3-S | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.8 | 3383 | 97 | |
| 9. | Nikon Z9 | Full Frame | 45.4 | 8256 | 5504 | 8K/30p | 26.3 | 14.4 | 2451 | 98 | |
| 10. | Nikon Zf | Full Frame | 24.3 | 6048 | 4024 | 4K/60p | 25.4 | 14.7 | 3243 | 96 | |
| 11. | Olympus E-M1 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.7 | 757 | 73 | |
| 12. | Olympus E-M5 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.0 | 12.5 | 842 | 73 | |
| 13. | Panasonic G5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 21.4 | 11.6 | 618 | 61 | |
| 14. | Panasonic GH2 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60i | 21.2 | 11.3 | 655 | 60 | |
| 15. | Panasonic GH4 | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.2 | 12.8 | 791 | 74 | |
| 16. | Panasonic S5 II | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.6 | 3158 | 96 | |
| 17. | Sony A9 III | Full Frame | 24.0 | 6000 | 4000 | 4K/120p | 25.4 | 14.7 | 3243 | 96 | |
| Note: DXO values in italics represent estimates based on sensor size and age. | |||||||||||
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the R1 provides a higher video resolution than the GH3. It can shoot video footage at 6K/60p, while the Panasonic is limited to 1080/60p.
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 R1 offers a substantially higher resolution than the one in the GH3 (9440k vs 1746k dots). The adjacent table lists some of the other core features of the Canon R1 and Panasonic GH3 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. | Canon R1 | 9440 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 2. | Panasonic GH3 | 1746 | n | 3.0 / 614 | swivel | Y | 1/4000s | 6.0/s | Y | n | |
| 3. | Canon R3 | 5760 | Y | 3.2 / 4150 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 4. | Canon R5 Mark II | 5760 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 5. | Canon R6 | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 6. | Canon R6 Mark II | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 7. | Canon R8 | 2360 | n | 3.0 / 1620 | swivel | Y | 1/4000s | 6.0/s | n | n | |
| 8. | Leica SL3-S | 5760 | Y | 3.2 / 2333 | tilting | Y | 1/8000s | 30.0/s | n | Y | |
| 9. | Nikon Z9 | 3690 | Y | 3.2 / 2089 | full-flex | Y | 1/32000s | 30.0/s | n | Y | |
| 10. | Nikon Zf | 3690 | n | 3.2 / 2100 | swivel | Y | 1/8000s | 14.0/s | n | Y | |
| 11. | Olympus E-M1 | 2360 | n | 3.0 / 1037 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
| 12. | Olympus E-M5 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 13. | Panasonic G5 | 1440 | n | 3.0 / 920 | swivel | Y | 1/4000s | 6.0/s | Y | n | |
| 14. | Panasonic GH2 | 1534 | n | 3.0 / 460 | swivel | n | 1/4000s | 3.0/s | Y | n | |
| 15. | Panasonic GH4 | 2359 | n | 3.0 / 1036 | swivel | Y | 1/8000s | 12.0/s | Y | n | |
| 16. | Panasonic S5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 9.0/s | n | Y | |
| 17. | Sony A9 III | 9440 | n | 3.2 / 2100 | full-flex | Y | 1/80000s | 120.0/s | n | Y | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
One feature that is present on the R1, but is missing on the GH3 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.
Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.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 Canon R1 and the Panasonic GH3 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 R1 writes its imaging data to CFexpress (type B) or SDXC cards, while the GH3 uses SDXC cards. The R1 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GH3 only has one slot. The R1 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GH3 can use UHS-I cards (up to 104 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 Canon EOS R1 and Panasonic Lumix DMC-GH3 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. | Canon R1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 2. | Panasonic GH3 | Y | stereo / mono | Y | Y | mini | 2.0 | Y | - | - | |
| 3. | Canon R3 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 4. | Canon R5 Mark II | Y | mono / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 5. | Canon R6 | Y | mono / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 6. | Canon R6 Mark II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 7. | Canon R8 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 8. | Leica SL3-S | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 9. | Nikon Z9 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 10. | Nikon Zf | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 11. | Olympus E-M1 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 12. | Olympus E-M5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 13. | Panasonic G5 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 14. | Panasonic GH2 | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
| 15. | Panasonic GH4 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 16. | Panasonic S5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 17. | Sony A9 III | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y |
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
The R1 is a recent model that features in the current product line-up of Canon. In contrast, the GH3 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the GH3 was succeeded by the Panasonic GH4. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Panasonic websites.
Review summary
So what conclusions can be drawn? Is there a clear favorite between the Canon R1 and the Panasonic GH3? Which camera is better? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Canon EOS R1:
- More detail: Offers more megapixels (24 vs 15.9MP) with a 25% higher linear resolution.
- Better image quality: Features a larger and more technologically advanced imaging sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better video: Provides higher definition movie capture (6K/60p vs 1080/60p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More detailed viewfinder: Has higher resolution electronic viewfinder (9440k vs 1746k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.9x vs 0.67x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (2100k vs 614k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (12 vs 6 flaps/sec) to capture the decisive moment.
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Can take more shots (1330 versus 540) on a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 11 years and 10 months of technical progress since the GH3 launch.

Advantages of the Panasonic Lumix DMC-GH3:
- More compact: Is smaller (133x93mm vs 158x150mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 565g or 51 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (79 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in September 2012).
If the count of relative strengths (bullet points above) is taken as a measure, the R1 is the clear winner of the match-up (24 : 5 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 Canon R1 and the Panasonic GH3 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the R1 or the GH3 perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
Expert reviews
This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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. | Canon R1 | .. | .. | .. | .. | .. | .. | Jul 2024 | US$ 6 299 | amazon.com | |
| 2. | Panasonic GH3 | 5/5 | + + | .. | 79/100 | 4.5/5 | 4.5/5 | Sep 2012 | US$ 1 299 | ebay.com | |
| 3. | Canon R3 | 5/5 | o | 4.5/5 | .. | 5/5 | 4.5/5 | Sep 2021 | US$ 5 999 | amazon.com | |
| 4. | Canon R5 Mark II | .. | .. | .. | 93/100 | .. | .. | Jul 2024 | US$ 4 299 | amazon.com | |
| 5. | Canon R6 | 5/5 | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Jul 2020 | US$ 2 499 | amazon.com | |
| 6. | Canon R6 Mark II | 5/5 | + + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Nov 2022 | US$ 2 499 | amazon.com | |
| 7. | Canon R8 | 4.5/5 | + + | 4.5/5 | 87/100 | 4/5 | 4.5/5 | Feb 2023 | US$ 1 499 | amazon.com | |
| 8. | Leica SL3-S | .. | .. | .. | .. | .. | .. | Jan 2025 | US$ 5 299 | amazon.com | |
| 9. | Nikon Z9 | 5/5 | .. | 4.5/5 | 94/100 | 5/5 | 5/5 | Oct 2021 | US$ 5 499 | amazon.com | |
| 10. | Nikon Zf | 4.5/5 | .. | 4.5/5 | 90/100 | 4.5/5 | 5/5 | Sep 2023 | US$ 1 999 | amazon.com | |
| 11. | Olympus E-M1 | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2013 | US$ 1 399 | ebay.com | |
| 12. | Olympus E-M5 II | 5/5 | + + | 4.5/5 | 81/100 | 5/5 | 5/5 | Feb 2015 | US$ 1 099 | ebay.com | |
| 13. | Panasonic G5 | 3/5 | + + | .. | .. | 4.5/5 | 4.5/5 | Jul 2012 | US$ 599 | ebay.com | |
| 14. | Panasonic GH2 | 5/5 | + + | .. | 79/100 | 4.5/5 | 5/5 | Sep 2010 | US$ 899 | ebay.com | |
| 15. | Panasonic GH4 | 5/5 | + + | .. | 85/100 | 5/5 | 5/5 | Feb 2014 | US$ 1 499 | ebay.com | |
| 16. | Panasonic S5 II | 4.5/5 | + + | 5/5 | 90/100 | 4.5/5 | 5/5 | Jan 2023 | US$ 1 999 | amazon.com | |
| 17. | Sony A9 III | 4.5/5 | .. | .. | 91/100 | .. | .. | Nov 2023 | US$ 5 999 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Check R1 price at
amazon.com

Check GH3 offers at
ebay.com
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon G1 X Mark II vs Panasonic GH3
- Canon G9 X Mark II vs Panasonic GH3
- Canon R1 vs Canon R6
- Canon R1 vs Fujifilm X-T5
- Canon R1 vs Panasonic GX9
- Canon R1 vs Sony A7
- Canon R1 vs Sony A9
- Canon R1 vs Sony RX0 II
- Canon T7 vs Panasonic GH3
- Fujifilm X-H1 vs Panasonic GH3
- Nikon 1 V3 vs Panasonic GH3
- Panasonic GH3 vs Panasonic TZ95
Specifications: Canon R1 vs Panasonic GH3
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 | Canon R1 | Panasonic GH3 |
|---|---|---|
| Camera Type | Mirrorless system camera | Mirrorless system camera |
| Camera Lens | Canon RF mount lenses | Micro Four Thirds lenses |
| Launch Date | July 2024 | September 2012 |
| Launch Price | USD 6,299 | USD 1,299 |
| Sensor Specs | Canon R1 | Panasonic GH3 |
| Sensor Technology | Stacked BSI-CMOS | CMOS |
| Sensor Format | Full Frame Sensor | Four Thirds Sensor |
| Sensor Size | 36.0 x 24.0 mm | 17.3 x 13.0 mm |
| Sensor Area | 864 mm2 | 224.9 mm2 |
| Sensor Diagonal | 43.3 mm | 21.6 mm |
| Crop Factor | 1.0x | 2.0x |
| Sensor Resolution | 24 Megapixels | 15.9 Megapixels |
| Image Resolution | 6000 x 4000 pixels | 4608 x 3456 pixels |
| Pixel Pitch | 6.00 μm | 3.76 μm |
| Pixel Density | 2.78 MP/cm2 | 7.08 MP/cm2 |
| Moiré control | Anti-Alias filter | Anti-Alias filter |
| Movie Capability | 6K/60p Video | 1080/60p Video |
| ISO Setting | 100 - 102,400 ISO | 200 - 12,800 ISO |
| ISO Boost | 50 - 409,600 ISO | 125 - 25,600 ISO |
| Image Processor | DIGIC X | Venus VII FHD |
| DXO Sensor Quality (score) | .. | 71 |
| DXO Color Depth (bits) | .. | 22.7 |
| DXO Dynamic Range (EV) | .. | 12.4 |
| DXO Low Light (ISO) | .. | 812 |
| Screen Specs | Canon R1 | Panasonic GH3 |
| Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.9x | 0.67x |
| Viewfinder Resolution | 9440k dots | 1746k dots |
| Top-Level Screen | Control Panel | no Top Display |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.2inch | 3.0inch |
| LCD Resolution | 2100k dots | 614k dots |
| LCD Attachment | Swivel screen | Swivel screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Canon R1 | Panasonic GH3 |
| Focus System | On-Sensor Phase-detect | Contrast-detect AF |
| Manual Focusing Aid | Focus Peaking | no Peaking Feature |
| Continuous Shooting | 12 shutter flaps/s | 6 shutter flaps/s |
| Electronic Shutter | up to 1/64000s | YES |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | In-body stabilization | Lens stabilization only |
| Fill Flash | no On-Board Flash | Built-in Flash |
| Storage Medium | CFexB or SDXC cards | SDXC cards |
| Single or Dual Card Slots | Dual card slots | Single card slot |
| UHS card support | UHS-II | UHS-I |
| Connectivity Specs | Canon R1 | Panasonic GH3 |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | PC Sync socket |
| USB Connector | USB 3.2 | USB 2.0 |
| HDMI Port | full HDMI | mini 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 | no Bluetooth |
| Body Specs | Canon R1 | Panasonic GH3 |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Canon LP-E19 | Panasonic DMW-BLF19 |
| Battery Life (CIPA) | 1330 shots per charge | 540 shots per charge |
| In-Camera Charging | USB charging | no USB charging |
| Body Dimensions |
158 x 150 x 87 mm (6.2 x 5.9 x 3.4 in) |
133 x 93 x 82 mm (5.2 x 3.7 x 3.2 in) |
| Camera Weight | 1115 g (39.3 oz) | 550 g (19.4 oz) |

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