Olympus E-PM1 vs Panasonic GH7
The Olympus PEN E-PM1 and the Panasonic Lumix DC-GH7 are two digital cameras that were officially introduced, respectively, in June 2011 and June 2024. Both the E-PM1 and the GH7 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The Olympus has a resolution of 12.2 megapixels, whereas the Panasonic provides 25 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-PM1 and the Panasonic Lumix DC-GH7? 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 Olympus E-PM1 and the Panasonic GH7 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.
The E-PM1 can be obtained in six different colors (black, silver, brown, pink, purple, white), while the GH7 is only available in black.



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GH7 is considerably larger (96 percent) than the Olympus E-PM1. Moreover, the GH7 is substantially heavier (204 percent) than the E-PM1. It is noteworthy in this context that the GH7 is splash and dust-proof, while the E-PM1 does not feature any corresponding weather-sealing.
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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Micro Four Thirds Lens Catalog. Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.
Concerning battery life, the E-PM1 gets 330 shots out of its Olympus BLS-5 battery, while the GH7 can take 380 images on a single charge of its Panasonic DMW-BLK22 power pack. The power pack in the GH7 can be charged via the USB port, which can be very convenient 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. | Olympus E-PM1 | 110 mm | 64 mm | 34 mm | 265 g | 330 | n | Jun 2011 | US$ 499 | ebay.com | |
| 2. | Panasonic GH7 | 138 mm | 100 mm | 100 mm | 805 g | 380 | Y | Jun 2024 | US$ 2 199 | amazon.com | |
| 3. | Olympus E-P3 | 122 mm | 69 mm | 34 mm | 369 g | 330 | n | Jun 2011 | US$ 799 | ebay.com | |
| 4. | Olympus E-PL1 | 115 mm | 72 mm | 42 mm | 334 g | 290 | n | Feb 2010 | US$ 599 | ebay.com | |
| 5. | Olympus E-PL2 | 114 mm | 72 mm | 42 mm | 362 g | 280 | n | Jan 2011 | US$ 599 | ebay.com | |
| 6. | Olympus E-PL3 | 110 mm | 64 mm | 37 mm | 313 g | 300 | n | Jun 2011 | US$ 599 | ebay.com | |
| 7. | Olympus E-PL5 | 111 mm | 64 mm | 38 mm | 325 g | 360 | n | Sep 2012 | US$ 599 | ebay.com | |
| 8. | Olympus E-PM2 | 110 mm | 64 mm | 34 mm | 269 g | 360 | n | Sep 2012 | US$ 499 | ebay.com | |
| 9. | Panasonic G2 | 124 mm | 84 mm | 74 mm | 428 g | 360 | n | Mar 2010 | US$ 599 | ebay.com | |
| 10. | Panasonic G9 II | 134 mm | 102 mm | 90 mm | 658 g | 390 | Y | Sep 2023 | US$ 1 899 | amazon.com | |
| 11. | Panasonic GF2 | 113 mm | 68 mm | 33 mm | 310 g | 300 | n | Nov 2010 | US$ 549 | ebay.com | |
| 12. | Panasonic GF3 | 108 mm | 67 mm | 32 mm | 264 g | 300 | n | Jun 2011 | US$ 549 | ebay.com | |
| 13. | Panasonic GF5 | 108 mm | 67 mm | 37 mm | 267 g | 360 | n | Apr 2012 | US$ 499 | ebay.com | |
| 14. | Panasonic GH5 | 139 mm | 98 mm | 87 mm | 725 g | 410 | Y | Jan 2017 | US$ 1 999 | ebay.com | |
| 15. | Panasonic GH5s | 139 mm | 98 mm | 87 mm | 660 g | 440 | Y | Jan 2018 | US$ 2 499 | amazon.com | |
| 16. | Panasonic GH6 | 138 mm | 100 mm | 100 mm | 823 g | 360 | Y | Feb 2022 | US$ 2 199 | amazon.com | |
| 17. | Panasonic S5 II | 134 mm | 102 mm | 90 mm | 740 g | 370 | Y | Jan 2023 | US$ 1 999 | 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The E-PM1 was launched at a markedly lower price (by 77 percent) than the GH7, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
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 associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature a Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

While the two cameras under review share the same sensor size, the GH7 offers a higher resolution of 25 megapixels, compared with 12.2 MP of the E-PM1. This megapixels advantage translates into a 43 percent gain in linear resolution. On the other hand, these sensor specs imply that the GH7 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.00μm versus 4.29μm for the E-PM1). However, it should be noted that the GH7 is much more recent (by 12 years and 11 months) than the E-PM1, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the GH7 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Panasonic GH7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GH7 for good quality output (200 dots per inch) amounts to 28.9 x 21.7 inches or 73.4 x 55.1 cm, for very good quality (250 dpi) 23.1 x 17.3 inches or 58.7 x 44.1 cm, and for excellent quality (300 dpi) 19.3 x 14.5 inches or 48.9 x 36.7 cm. The corresponding values for the Olympus E-PM1 are 20.2 x 15.1 inches or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inches or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inches or 34.1 x 25.6 cm for excellent quality prints.
The GH7 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the E-PM1, the GH7 has the capacity to capture high quality composite images (100MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Olympus PEN E-PM1 has a native sensitivity range from ISO 100 to ISO 12800. The corresponding ISO settings for the Panasonic Lumix DC-GH7 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Olympus E-PM1 | Four Thirds | 12.2 | 4032 | 3024 | 1080/60i | 21.0 | 10.3 | 499 | 52 | |
| 2. | Panasonic GH7 | Four Thirds | 25.0 | 5776 | 4336 | 5.7K/60p | 23.4 | 13.6 | 1784 | 78 | |
| 3. | Olympus E-P3 | Four Thirds | 12.2 | 4032 | 3024 | 1080/60i | 20.8 | 10.1 | 536 | 51 | |
| 4. | Olympus E-PL1 | Four Thirds | 12.2 | 4032 | 3024 | 720/30p | 21.5 | 10.1 | 487 | 54 | |
| 5. | Olympus E-PL2 | Four Thirds | 12.2 | 4032 | 3024 | 720/30p | 21.4 | 10.2 | 573 | 55 | |
| 6. | Olympus E-PL3 | Four Thirds | 12.2 | 4032 | 3024 | 1080/60i | 20.9 | 10.3 | 499 | 52 | |
| 7. | Olympus E-PL5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.3 | 889 | 72 | |
| 8. | Olympus E-PM2 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.7 | 12.2 | 932 | 72 | |
| 9. | Panasonic G2 | Four Thirds | 12.0 | 4000 | 3000 | 720/30p | 21.2 | 10.3 | 493 | 53 | |
| 10. | Panasonic G9 II | Four Thirds | 25.0 | 5776 | 4336 | 5.7K/60p | 23.4 | 13.5 | 1710 | 78 | |
| 11. | Panasonic GF2 | Four Thirds | 12.0 | 4000 | 3000 | 1080/60i | 21.2 | 10.3 | 506 | 54 | |
| 12. | Panasonic GF3 | Four Thirds | 12.0 | 4000 | 3000 | 1080/60i | 20.6 | 10.1 | 459 | 50 | |
| 13. | Panasonic GF5 | Four Thirds | 12.0 | 4000 | 3000 | 1080/60i | 20.5 | 10.0 | 573 | 50 | |
| 14. | Panasonic GH5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.9 | 13.0 | 807 | 77 | |
| 15. | Panasonic GH5s | Four Thirds | 9.9 | 3680 | 2700 | 4K/60p | 23.1 | 12.8 | 1154 | 74 | |
| 16. | Panasonic GH6 | Four Thirds | 25.0 | 5776 | 4336 | 5.7K/60p | 23.4 | 13.4 | 1555 | 77 | |
| 17. | Panasonic S5 II | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.6 | 3158 | 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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the GH7 provides a better video resolution than the E-PM1. It can shoot movie footage at 5.7K/60p, while the Olympus is limited to 1080/60i.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. For example, the GH7 has an electronic viewfinder (3680k dots), which can be very helpful when shooting in bright sunlight. In contrast, the E-PM1 relies on live view and the rear LCD for framing. That said, the E-PM1 can be equipped with an optional viewfinder – the VF-2. The following table reports on some other key feature differences and similarities of the Olympus E-PM1, the Panasonic GH7, and comparable 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. | Olympus E-PM1 | optional | n | 3.0 / 460 | fixed | n | 1/4000s | 5.5/s | n | Y | |
| 2. | Panasonic GH7 | 3680 | n | 3.0 / 1840 | full-flex | Y | 1/8000s | 14.0/s | n | Y | |
| 3. | Olympus E-P3 | optional | n | 3.0 / 614 | fixed | Y | 1/4000s | 3.0/s | Y | Y | |
| 4. | Olympus E-PL1 | optional | n | 2.7 / 230 | fixed | n | 1/2000s | 3.0/s | Y | Y | |
| 5. | Olympus E-PL2 | optional | n | 3.0 / 460 | fixed | n | 1/4000s | 3.0/s | Y | Y | |
| 6. | Olympus E-PL3 | optional | n | 3.0 / 460 | tilting | n | 1/4000s | 5.5/s | n | Y | |
| 7. | Olympus E-PL5 | optional | n | 3.0 / 460 | tilting | Y | 1/4000s | 8.0/s | n | Y | |
| 8. | Olympus E-PM2 | optional | n | 3.0 / 460 | fixed | Y | 1/4000s | 8.0/s | n | Y | |
| 9. | Panasonic G2 | 1440 | n | 3.0 / 460 | swivel | Y | 1/4000s | 2.6/s | Y | n | |
| 10. | Panasonic G9 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 11. | Panasonic GF2 | optional | n | 3.0 / 460 | fixed | Y | 1/4000s | 2.6/s | Y | n | |
| 12. | Panasonic GF3 | none | n | 3.0 / 460 | fixed | Y | 1/4000s | 3.2/s | Y | n | |
| 13. | Panasonic GF5 | none | n | 3.0 / 920 | fixed | Y | 1/4000s | 4.0/s | Y | n | |
| 14. | Panasonic GH5 | 3680 | n | 3.2 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 15. | Panasonic GH5s | 3680 | n | 3.2 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | n | |
| 16. | Panasonic GH6 | 3680 | n | 3.0 / 1840 | full-flex | Y | 1/8000s | 14.0/s | n | Y | |
| 17. | Panasonic S5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 9.0/s | n | Y | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GH7 has a touchscreen, while the E-PM1 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
The GH7 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the E-PM1 does not have a selfie-screen.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, the GH7 is one of those camera that have an additional 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 Panasonic GH7 has 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 E-PM1 writes its imaging data to SDXC cards, while the GH7 uses CFexpress (type B) or SDXC cards. The GH7 features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-PM1 only has one slot. The GH7 supports UHS-II cards (on both slots), while the E-PM1 cannot take advantage of Ultra High Speed SD cards.
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 Olympus PEN E-PM1 and Panasonic Lumix DC-GH7 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. | Olympus E-PM1 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 2. | Panasonic GH7 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 3. | Olympus E-P3 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
| 4. | Olympus E-PL1 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
| 5. | Olympus E-PL2 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
| 6. | Olympus E-PL3 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
| 7. | Olympus E-PL5 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 8. | Olympus E-PM2 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 9. | Panasonic G2 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 10. | Panasonic G9 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 11. | Panasonic GF2 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 12. | Panasonic GF3 | - | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 13. | Panasonic GF5 | - | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 14. | Panasonic GH5 | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
| 15. | Panasonic GH5s | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
| 16. | Panasonic GH6 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 17. | Panasonic S5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y |
It is notable that the GH7 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-PM1 does not provide wifi capability.
Studio photographers will appreciate that the Panasonic GH7 (unlike the E-PM1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The GH7 is a recent model that features in the current product line-up of Panasonic. In contrast, the E-PM1 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-PM1 was succeeded by the Olympus E-PM2. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Panasonic websites.
Review summary
So what is the bottom line? Is there a clear favorite between the Olympus E-PM1 and the Panasonic GH7? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Olympus PEN E-PM1:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (110x64mm vs 138x100mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 540g or 67 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (77 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in June 2011).

Reasons to prefer the Panasonic Lumix DC-GH7:
- More detail: Has more megapixels (25 vs 12.2MP), which boosts linear resolution by 43%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better video: Provides higher definition movie capture (5.7K/60p vs 1080/60i).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More detailed LCD: Has a higher resolution rear screen (1840k vs 460k dots).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (14 vs 5.5 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Gets more shots (380 versus 330) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- 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.
- Faster buffer clearing: Supports Ultra High Speed (UHS-II) SDXC cards on both slots.
- More modern: Reflects 12 years and 11 months of technical progress since the E-PM1 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the GH7 is the clear winner of the contest (27 : 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 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 Olympus E-PM1 and the Panasonic GH7 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 E-PM1 or the GH7. 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 hands-on reviews by experts 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. | Olympus E-PM1 | .. | 86/100 | .. | 71/100 | 4.5/5 | 4.5/5 | Jun 2011 | US$ 499 | ebay.com | |
| 2. | Panasonic GH7 | .. | .. | .. | .. | .. | .. | Jun 2024 | US$ 2 199 | amazon.com | |
| 3. | Olympus E-P3 | .. | 83/100 | .. | 74/100 | 4.5/5 | 4.5/5 | Jun 2011 | US$ 799 | ebay.com | |
| 4. | Olympus E-PL1 | .. | 86/100 | .. | 69/100 | 4/5 | 4.5/5 | Feb 2010 | US$ 599 | ebay.com | |
| 5. | Olympus E-PL2 | 3/5 | 83/100 | .. | 71/100 | 4.5/5 | 4.5/5 | Jan 2011 | US$ 599 | ebay.com | |
| 6. | Olympus E-PL3 | 3/5 | + + | .. | 72/100 | 4.5/5 | 4/5 | Jun 2011 | US$ 599 | ebay.com | |
| 7. | Olympus E-PL5 | 3/5 | + + | .. | .. | 4.5/5 | 4.5/5 | Sep 2012 | US$ 599 | ebay.com | |
| 8. | Olympus E-PM2 | 3/5 | .. | .. | 77/100 | 5/5 | 4.5/5 | Sep 2012 | US$ 499 | ebay.com | |
| 9. | Panasonic G2 | .. | .. | .. | 72/100 | 4/5 | 4.5/5 | Mar 2010 | US$ 599 | ebay.com | |
| 10. | Panasonic G9 II | 5/5 | .. | 4.5/5 | 87/100 | .. | 4.5/5 | Sep 2023 | US$ 1 899 | amazon.com | |
| 11. | Panasonic GF2 | 3/5 | 82/100 | .. | 70/100 | 4.5/5 | 4.5/5 | Nov 2010 | US$ 549 | ebay.com | |
| 12. | Panasonic GF3 | 3/5 | 82/100 | .. | 71/100 | 4.5/5 | 4/5 | Jun 2011 | US$ 549 | ebay.com | |
| 13. | Panasonic GF5 | 3/5 | .. | .. | .. | 4.5/5 | 4.5/5 | Apr 2012 | US$ 499 | ebay.com | |
| 14. | Panasonic GH5 | 4.5/5 | + + | .. | 85/100 | 4.5/5 | 5/5 | Jan 2017 | US$ 1 999 | ebay.com | |
| 15. | Panasonic GH5s | .. | .. | 4.5/5 | 84/100 | 4.5/5 | 4.5/5 | Jan 2018 | US$ 2 499 | amazon.com | |
| 16. | Panasonic GH6 | 5/5 | + + | 5/5 | 87/100 | 5/5 | 5/5 | Feb 2022 | US$ 2 199 | amazon.com | |
| 17. | Panasonic S5 II | 4.5/5 | + + | 5/5 | 90/100 | 4.5/5 | 5/5 | Jan 2023 | US$ 1 999 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, 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 E-PM1 offers at
ebay.com

Check GH7 price at
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Other camera comparisons
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Specifications: Olympus E-PM1 vs Panasonic GH7
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 | Olympus E-PM1 | Panasonic GH7 |
|---|---|---|
| Camera Type | Mirrorless system camera | Mirrorless system camera |
| Camera Lens | Micro Four Thirds lenses | Micro Four Thirds lenses |
| Launch Date | June 2011 | June 2024 |
| Launch Price | USD 499 | USD 2,199 |
| Sensor Specs | Olympus E-PM1 | Panasonic GH7 |
| Sensor Technology | CMOS | CMOS |
| Sensor Format | Four Thirds Sensor | Four Thirds Sensor |
| Sensor Size | 17.3 x 13.0 mm | 17.3 x 13.0 mm |
| Sensor Area | 224.9 mm2 | 224.9 mm2 |
| Sensor Diagonal | 21.6 mm | 21.6 mm |
| Crop Factor | 2.0x | 2.0x |
| Sensor Resolution | 12.2 Megapixels | 25 Megapixels |
| Image Resolution | 4032 x 3024 pixels | 5776 x 4336 pixels |
| Pixel Pitch | 4.29 μm | 3.00 μm |
| Pixel Density | 5.42 MP/cm2 | 11.14 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 1080/60i Video | 5.7K/60p Video |
| ISO Setting | 100 - 12,800 ISO | 100 - 25,600 ISO |
| ISO Boost | no Enhancement | 50 - 25,600 ISO |
| Image Processor | TruePic VI | Venus |
| DXO Sensor Quality (score) | 52 | .. |
| DXO Color Depth (bits) | 21.0 | .. |
| DXO Dynamic Range (EV) | 10.3 | .. |
| DXO Low Light (ISO) | 499 | .. |
| Screen Specs | Olympus E-PM1 | Panasonic GH7 |
| Viewfinder Type | Viewfinder optional | Electronic viewfinder |
| Viewfinder Field of View | 100% | |
| Viewfinder Magnification | 0.8x | |
| Viewfinder Resolution | 3680k dots | |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.0inch |
| LCD Resolution | 460k dots | 1840k dots |
| LCD Attachment | Fixed screen | Fully flexible screen |
| Touch Input | no Touchscreen | Touchscreen |
| Shooting Specs | Olympus E-PM1 | Panasonic GH7 |
| Focus System | Contrast-detect AF | On-Sensor Phase-detect |
| Manual Focusing Aid | no Peaking Feature | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/4000s | 1/8000s |
| Continuous Shooting | 5.5 shutter flaps/s | 14 shutter flaps/s |
| Electronic Shutter | no E-Shutter | up to 1/32000s |
| Time-Lapse Photography | no Intervalometer | Intervalometer built-in |
| Image Stabilization | In-body stabilization | In-body stabilization |
| Fill Flash | no On-Board Flash | no On-Board Flash |
| Storage Medium | SDXC cards | CFexB or SDXC cards |
| Single or Dual Card Slots | Single card slot | Dual card slots |
| UHS card support | no | Dual UHS-II |
| Connectivity Specs | Olympus E-PM1 | Panasonic GH7 |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | no PC Sync | PC Sync socket |
| USB Connector | USB 2.0 | USB 3.2 |
| HDMI Port | mini HDMI | full HDMI |
| Microphone Port | no MIC socket | External MIC port |
| Headphone Socket | no Headphone port | Headphone port |
| Wifi Support | no Wifi | Wifi built-in |
| Bluetooth Support | no Bluetooth | Bluetooth built-in |
| Body Specs | Olympus E-PM1 | Panasonic GH7 |
| Environmental Sealing | not weather sealed | Weathersealed body |
| Battery Type | Olympus BLS-5 | Panasonic DMW-BLK22 |
| Battery Life (CIPA) | 330 shots per charge | 380 shots per charge |
| In-Camera Charging | no USB charging | USB charging |
| Body Dimensions |
110 x 64 x 34 mm (4.3 x 2.5 x 1.3 in) |
138 x 100 x 100 mm (5.4 x 3.9 x 3.9 in) |
| Camera Weight | 265 g (9.3 oz) | 805 g (28.4 oz) |

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