Canon R3 vs Panasonic GH4
The Canon EOS R3 and the Panasonic Lumix DMC-GH4 are two digital cameras that were announced, respectively, in September 2021 and February 2014. Both the R3 and the GH4 are mirrorless interchangeable lens cameras that are based on a full frame (R3) and a Four Thirds (GH4) 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 R3 price at
amazon.com

Check GH4 offers at
ebay.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R3 and the Panasonic Lumix DMC-GH4? 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 R3 and the Panasonic GH4 are illustrated 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 measures 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 GH4 is considerably smaller (42 percent) than the Canon R3. Moreover, the GH4 is substantially lighter (45 percent) than the R3. 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 R3 gets 760 shots out of its Canon LP-E19 battery, while the GH4 can take 500 images on a single charge of its Panasonic DMW-BLF19 power pack. As can be seen in the images above, the R3 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 GH4, Panasonic provides the DMW-BGGH3 vertical grip as an optional accessory (see here on ebay). The power pack in the R3 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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. | Canon R3 | 150 mm | 143 mm | 87 mm | 1015 g | 760 | Y | Sep 2021 | US$ 5 999 | amazon.com | |
| 2. | Panasonic GH4 | 133 mm | 93 mm | 84 mm | 560 g | 500 | Y | Feb 2014 | US$ 1 499 | ebay.com | |
| 3. | Canon 1D X Mark III | 158 mm | 168 mm | 83 mm | 1440 g | 2850 | Y | Jan 2020 | US$ 6 499 | amazon.com | |
| 4. | Canon R1 | 158 mm | 150 mm | 87 mm | 1115 g | 1330 | Y | Jul 2024 | US$ 6 299 | amazon.com | |
| 5. | Canon R5 | 138 mm | 98 mm | 88 mm | 738 g | 320 | Y | Jul 2020 | US$ 3 899 | amazon.com | |
| 6. | Canon R6 | 138 mm | 98 mm | 88 mm | 680 g | 360 | Y | Jul 2020 | US$ 2 499 | amazon.com | |
| 7. | Canon R6 Mark II | 138 mm | 98 mm | 88 mm | 670 g | 450 | Y | Nov 2022 | US$ 2 499 | amazon.com | |
| 8. | Leica SL2-S | 146 mm | 107 mm | 83 mm | 931 g | 510 | Y | Dec 2020 | US$ 4 899 | amazon.com | |
| 9. | Nikon Z6 II | 134 mm | 101 mm | 70 mm | 705 g | 410 | Y | Oct 2020 | US$ 1 999 | amazon.com | |
| 10. | Olympus E-M1 | 130 mm | 94 mm | 63 mm | 497 g | 350 | Y | Sep 2013 | US$ 1 399 | ebay.com | |
| 11. | Olympus E-M5 II | 124 mm | 85 mm | 45 mm | 469 g | 310 | Y | Feb 2015 | US$ 1 099 | ebay.com | |
| 12. | Panasonic G6 | 122 mm | 85 mm | 71 mm | 390 g | 340 | n | Apr 2013 | US$ 599 | ebay.com | |
| 13. | Panasonic GH3 | 133 mm | 93 mm | 82 mm | 550 g | 540 | Y | Sep 2012 | US$ 1 299 | ebay.com | |
| 14. | Panasonic GH5 | 139 mm | 98 mm | 87 mm | 725 g | 410 | Y | Jan 2017 | US$ 1 999 | ebay.com | |
| 15. | Panasonic S5 | 133 mm | 98 mm | 82 mm | 714 g | 440 | Y | Sep 2020 | US$ 1 999 | amazon.com | |
| 16. | Sony A1 | 129 mm | 97 mm | 81 mm | 737 g | 530 | Y | Jan 2021 | US$ 6 499 | amazon.com | |
| 17. | Sony A7C | 124 mm | 71 mm | 60 mm | 509 g | 740 | Y | Sep 2020 | US$ 1 799 | amazon.com | |
| Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
The price is, of course, an important factor in any camera decision. 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 GH4 was launched at a markedly lower price (by 75 percent) than the R3, which puts it into a different market segment. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon R3 features a full frame sensor and the Panasonic GH4 a Four Thirds sensor. The sensor area in the GH4 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 R3 has a native 3:2 aspect ratio, while the one in the GH4 offers a 4:3 aspect.

With 24MP, the R3 offers a higher resolution than the GH4 (15.9MP), but the R3 nevertheless has larger individual pixels (pixel pitch of 6.00μm versus 3.76μm for the GH4) due to its larger sensor. Moreover, the R3 is a much more recent model (by 7 years and 7 months) than the GH4, 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 R3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the R3 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 GH4 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 R3 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS R3 has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Panasonic Lumix DMC-GH4 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.
In terms of underlying technology, the R3 is build around a Stacked BSI-CMOS sensor, while the GH4 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 assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under review, the R3 provides substantially higher image quality than the GH4, with an overall score that is 22 points higher. This advantage is based on 1.8 bits higher color depth, 1.9 EV in additional dynamic range, and 2.4 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon R3 | Full Frame | 24.0 | 6000 | 4000 | 6K/60p | 25.0 | 14.7 | 4086 | 96 | |
| 2. | Panasonic GH4 | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.2 | 12.8 | 791 | 74 | |
| 3. | Canon 1D X Mark III | Full Frame | 20.0 | 5472 | 3648 | 4K/60p | 24.2 | 14.5 | 3248 | 91 | |
| 4. | Canon R1 | Full Frame | 24.0 | 6000 | 4000 | 6K/60p | 25.4 | 14.8 | 3332 | 97 | |
| 5. | Canon R5 | Full Frame | 44.8 | 8192 | 5464 | 8K/30p | 25.3 | 14.6 | 3042 | 95 | |
| 6. | Canon R6 | Full Frame | 20.0 | 5472 | 3648 | 4k/60p | 24.2 | 14.3 | 3394 | 90 | |
| 7. | Canon R6 Mark II | Full Frame | 24.0 | 6000 | 4000 | 4k/60p | 25.4 | 14.6 | 3154 | 96 | |
| 8. | Leica SL2-S | Full Frame | 24.0 | 6000 | 4000 | 4K/60p | 25.2 | 14.1 | 3504 | 95 | |
| 9. | Nikon Z6 II | Full Frame | 24.3 | 6048 | 4024 | 4K/60p | 25.0 | 14.4 | 3303 | 94 | |
| 10. | Olympus E-M1 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.7 | 757 | 73 | |
| 11. | Olympus E-M5 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.0 | 12.5 | 842 | 73 | |
| 12. | Panasonic G6 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 21.3 | 11.5 | 639 | 61 | |
| 13. | Panasonic GH3 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 22.7 | 12.4 | 812 | 71 | |
| 14. | Panasonic GH5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.9 | 13.0 | 807 | 77 | |
| 15. | Panasonic S5 | Full Frame | 24.0 | 6000 | 4000 | 4K/60p | 25.1 | 14.5 | 2697 | 94 | |
| 16. | Sony A1 | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.9 | 14.5 | 3163 | 98 | |
| 17. | Sony A7C | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3407 | 95 | |
| 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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the R3 provides a higher video resolution than the GH4. It can shoot video footage at 6K/60p, while the Panasonic 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 R3 offers a substantially higher resolution than the one in the GH4 (5760k vs 2359k dots). The table below summarizes some of the other core capabilities of the Canon R3 and Panasonic GH4 in connection with corresponding information for a sample of similar cameras.

| 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 R3 | 5760 | Y | 3.2 / 4150 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 2. | Panasonic GH4 | 2359 | n | 3.0 / 1036 | swivel | Y | 1/8000s | 12.0/s | Y | n | |
| 3. | Canon 1D X Mark III | optical | Y | 3.2 / 2100 | fixed | Y | 1/8000s | 20.0/s | n | n | |
| 4. | Canon R1 | 9440 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 5. | Canon R5 | 5760 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 6. | Canon R6 | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 7. | Canon R6 Mark II | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 8. | Leica SL2-S | 5760 | Y | 3.2 / 2100 | fixed | Y | 1/8000s | 20.0/s | n | Y | |
| 9. | Nikon Z6 II | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 14.0/s | n | Y | |
| 10. | Olympus E-M1 | 2360 | n | 3.0 / 1037 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
| 11. | Olympus E-M5 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 12. | Panasonic G6 | 1440 | n | 3.0 / 1036 | swivel | Y | 1/4000s | 7.0/s | Y | n | |
| 13. | Panasonic GH3 | 1746 | n | 3.0 / 614 | swivel | Y | 1/4000s | 6.0/s | Y | n | |
| 14. | Panasonic GH5 | 3680 | n | 3.2 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 15. | Panasonic S5 | 2360 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 7.0/s | n | Y | |
| 16. | Sony A1 | 9437 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 30.0/s | n | Y | |
| 17. | Sony A7C | 2360 | n | 3.0 / 922 | swivel | Y | 1/4000s | 10.0/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 R3, but is missing on the GH4 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 R3 and the Panasonic GH4 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 R3 writes its imaging data to CFexpress (type B) or SDXC cards, while the GH4 uses SDXC cards. The R3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GH4 only has one slot. The R3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GH4 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 R3 and Panasonic Lumix DMC-GH4 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 R3 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 2. | Panasonic GH4 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 3. | Canon 1D X Mark III | Y | mono / mono | Y | Y | mini | 3.1 | Y | - | Y | |
| 4. | Canon R1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 5. | Canon R5 | Y | mono / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 6. | Canon R6 | Y | mono / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 7. | Canon R6 Mark II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 8. | Leica SL2-S | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 9. | Nikon Z6 II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 10. | Olympus E-M1 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 11. | Olympus E-M5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 12. | Panasonic G6 | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | - | |
| 13. | Panasonic GH3 | Y | stereo / mono | Y | Y | mini | 2.0 | Y | - | - | |
| 14. | Panasonic GH5 | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
| 15. | Panasonic S5 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 16. | Sony A1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 17. | Sony A7C | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y |
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
The R3 is a recent model that features in the current product line-up of Canon. In contrast, the GH4 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the GH4 was succeeded by the Panasonic GH5. Further information on the features and operation of the R3 and GH4 can be found, respectively, in the Canon R3 Manual (free pdf) or the online Panasonic GH4 Manual.
Review summary
So what conclusions can be drawn? Is the Canon R3 better than the Panasonic GH4 or vice versa? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon EOS R3:
- More detail: Offers more megapixels (24 vs 15.9MP) with a 25% higher linear resolution.
- Better image quality: Scores substantially higher (22 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.8 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (1.9 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (2.4 stops ISO advantage).
- Better video: Provides higher definition movie capture (6K/60p vs 4K/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 2359k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x 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 (4150k vs 1036k dots).
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Can take more shots (760 versus 500) 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).
- 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 7 years and 7 months of technical progress since the GH4 launch.

Advantages of the Panasonic Lumix DMC-GH4:
- More compact: Is smaller (133x93mm vs 150x143mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 455g or 45 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced into a lower priced category (75 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in February 2014).
If the count of individual advantages (bullet points above) is taken as a guide, the R3 is the clear winner of the match-up (21 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 R3 and the Panasonic GH4 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the R3 or the GH4. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
Expert reviews
This is why hands-on reviews by experts are important. 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 R3 | 5/5 | o | 4.5/5 | .. | 5/5 | 4.5/5 | Sep 2021 | US$ 5 999 | amazon.com | |
| 2. | Panasonic GH4 | 5/5 | + + | .. | 85/100 | 5/5 | 5/5 | Feb 2014 | US$ 1 499 | ebay.com | |
| 3. | Canon 1D X Mark III | .. | + + | 5/5 | .. | 4.5/5 | 4/5 | Jan 2020 | US$ 6 499 | amazon.com | |
| 4. | Canon R1 | .. | .. | .. | .. | .. | .. | Jul 2024 | US$ 6 299 | amazon.com | |
| 5. | Canon R5 | 4.5/5 | + | 4/5 | 91/100 | 4.5/5 | 4.5/5 | Jul 2020 | US$ 3 899 | amazon.com | |
| 6. | Canon R6 | 5/5 | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Jul 2020 | US$ 2 499 | amazon.com | |
| 7. | Canon R6 Mark II | 5/5 | + + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Nov 2022 | US$ 2 499 | amazon.com | |
| 8. | Leica SL2-S | 4/5 | .. | 4/5 | .. | 4.5/5 | 4.5/5 | Dec 2020 | US$ 4 899 | amazon.com | |
| 9. | Nikon Z6 II | 4.5/5 | .. | 4/5 | 89/100 | 4.5/5 | 4.5/5 | Oct 2020 | US$ 1 999 | amazon.com | |
| 10. | Olympus E-M1 | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2013 | US$ 1 399 | ebay.com | |
| 11. | Olympus E-M5 II | 5/5 | + + | 4.5/5 | 81/100 | 5/5 | 5/5 | Feb 2015 | US$ 1 099 | ebay.com | |
| 12. | Panasonic G6 | 4/5 | + + | .. | .. | 5/5 | 4.5/5 | Apr 2013 | US$ 599 | ebay.com | |
| 13. | Panasonic GH3 | 5/5 | + + | .. | 79/100 | 4.5/5 | 4.5/5 | Sep 2012 | US$ 1 299 | ebay.com | |
| 14. | Panasonic GH5 | 4.5/5 | + + | .. | 85/100 | 4.5/5 | 5/5 | Jan 2017 | US$ 1 999 | ebay.com | |
| 15. | Panasonic S5 | 4.5/5 | + + | 4.5/5 | 88/100 | 4.5/5 | 4.5/5 | Sep 2020 | US$ 1 999 | amazon.com | |
| 16. | Sony A1 | 5/5 | o | 4.5/5 | 93/100 | 4.5/5 | 5/5 | Jan 2021 | US$ 6 499 | amazon.com | |
| 17. | Sony A7C | 3.5/5 | .. | 3.5/5 | 86/100 | 4/5 | 4/5 | Sep 2020 | US$ 1 799 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check R3 price at
amazon.com

Check GH4 offers at
ebay.com
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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 2000D vs Canon R3
- Canon G7 X vs Panasonic GH4
- Canon R3 vs Fujifilm X-T50
- Canon R3 vs OM System TG-7
- Canon R3 vs Panasonic FT7
- Canon R3 vs Sony A7C II
- Canon R3 vs Sony A7R IVA
- Nikon D1H vs Panasonic GH4
- Panasonic GH4 vs Pentax K-S2
- Panasonic GH4 vs Sony A7C
- Panasonic GH4 vs Sony HX350
- Panasonic GH4 vs Sony NEX-5
Specifications: Canon R3 vs Panasonic GH4
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 R3 | Panasonic GH4 |
|---|---|---|
| Camera Type | Mirrorless system camera | Mirrorless system camera |
| Camera Lens | Canon RF mount lenses | Micro Four Thirds lenses |
| Launch Date | September 2021 | February 2014 |
| Launch Price | USD 5,999 | USD 1,499 |
| Sensor Specs | Canon R3 | Panasonic GH4 |
| 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 | 4K/30p Video |
| ISO Setting | 100 - 51,200 ISO | 200 - 25,600 ISO |
| ISO Boost | 50 - 204,800 ISO | 100 - 25,600 ISO |
| Image Processor | DIGIC X | Venus IX |
| DXO Sensor Quality (score) | 96 | 74 |
| DXO Color Depth (bits) | 25 | 23.2 |
| DXO Dynamic Range (EV) | 14.7 | 12.8 |
| DXO Low Light (ISO) | 4086 | 791 |
| Screen Specs | Canon R3 | Panasonic GH4 |
| Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.76x | 0.67x |
| Viewfinder Resolution | 5760k dots | 2359k dots |
| Top-Level Screen | Control Panel | no Top Display |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.2inch | 3.0inch |
| LCD Resolution | 4150k dots | 1036k dots |
| LCD Attachment | Swivel screen | Swivel screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Canon R3 | Panasonic GH4 |
| Focus System | On-Sensor Phase-detect | Contrast-detect AF |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/8000s | 1/8000s |
| Continuous Shooting | 12 shutter flaps/s | 12 shutter flaps/s |
| Electronic Shutter | up to 1/64000s | up to 1/8000s |
| 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 R3 | Panasonic GH4 |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | PC Sync socket |
| USB Connector | USB 3.2 | USB 2.0 |
| HDMI Port | micro 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 |
| Near-Field Communication | no NFC | NFC built-in |
| Bluetooth Support | Bluetooth built-in | no Bluetooth |
| Body Specs | Canon R3 | Panasonic GH4 |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Canon LP-E19 | Panasonic DMW-BLF19 |
| Battery Life (CIPA) | 760 shots per charge | 500 shots per charge |
| In-Camera Charging | USB charging | no USB charging |
| Body Dimensions |
150 x 143 x 87 mm (5.9 x 5.6 x 3.4 in) |
133 x 93 x 84 mm (5.2 x 3.7 x 3.3 in) |
| Camera Weight | 1015 g (35.8 oz) | 560 g (19.8 oz) |

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