OM System TG-7 vs Panasonic S1 II
The OM System Tough TG-7 and the Panasonic Lumix DC-S1 II are two digital cameras that were officially introduced, respectively, in September 2023 and May 2025. The TG-7 is a fixed lens compact, while the S1 II is a mirrorless interchangeable lens camera. The cameras are based on a 1/2.3-inch (TG-7) and a full frame (S1 II) sensor. The OM System has a resolution of 12 megapixels, whereas the Panasonic provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check TG-7 price at
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Check S1 II price at
amazon.com
Going beyond this snapshot of core features and characteristics, what are the differences between the OM System Tough TG-7 and the Panasonic Lumix DC-S1 II? 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 OM System TG-7 and the Panasonic S1 II 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 size dimensions are rounded to the nearest millimeter.
The TG-7 can be obtained in two different colors (black, red), while the S1 II 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 S1 II is considerably larger (82 percent) than the OM System TG-7. 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. More than that, the TG-7 is water-proof up to 15m and can, thus, be used for underwater photography.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the TG-7 has a lens built in, whereas the S1 II is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
Concerning battery life, the TG-7 gets 330 shots out of its OM System LI-92B battery, while the S1 II can take 350 images on a single charge of its Panasonic DMW-BLK22 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 want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | OM System TG-7 | 114 mm | 66 mm | 33 mm | 249 g | 330 | Y | Sep 2023 | US$ 549 | amazon.com | |
| 2. | Panasonic S1 II | 134 mm | 102 mm | 92 mm | 800 g | 350 | Y | May 2025 | US$ 3 199 | amazon.com | |
| 3. | Olympus E-PM1 | 110 mm | 64 mm | 34 mm | 265 g | 330 | n | Jun 2011 | US$ 499 | ebay.com | |
| 4. | Olympus E-PM2 | 110 mm | 64 mm | 34 mm | 269 g | 360 | n | Sep 2012 | US$ 499 | ebay.com | |
| 5. | Olympus TG-4 | 112 mm | 66 mm | 31 mm | 247 g | 380 | Y | Apr 2015 | US$ 379 | ebay.com | |
| 6. | Olympus TG-5 | 113 mm | 66 mm | 32 mm | 250 g | 340 | Y | May 2017 | US$ 449 | ebay.com | |
| 7. | Olympus TG-6 | 113 mm | 66 mm | 32 mm | 253 g | 340 | Y | May 2019 | US$ 449 | ebay.com | |
| 8. | Olympus XZ-1 | 111 mm | 65 mm | 42 mm | 275 g | 320 | n | Jan 2011 | US$ 499 | ebay.com | |
| 9. | Olympus XZ-2 | 113 mm | 65 mm | 48 mm | 346 g | 340 | n | Sep 2012 | US$ 599 | ebay.com | |
| 10. | Panasonic FZ330 | 132 mm | 92 mm | 117 mm | 691 g | 380 | Y | Jul 2015 | US$ 599 | amazon.com | |
| 11. | Panasonic GH7 | 138 mm | 100 mm | 100 mm | 805 g | 380 | Y | Jun 2024 | US$ 2 199 | amazon.com | |
| 12. | Panasonic LX7 | 111 mm | 68 mm | 46 mm | 298 g | 330 | n | Jul 2012 | US$ 499 | ebay.com | |
| 13. | Panasonic S1 | 149 mm | 110 mm | 97 mm | 1017 g | 400 | Y | Feb 2019 | US$ 2 499 | ebay.com | |
| 14. | Panasonic S1R II | 134 mm | 102 mm | 92 mm | 795 g | 350 | Y | May 2025 | US$ 3 299 | amazon.com | |
| 15. | Panasonic S5 | 133 mm | 98 mm | 82 mm | 714 g | 440 | Y | Sep 2020 | US$ 1 999 | amazon.com | |
| 16. | Panasonic S5 II | 134 mm | 102 mm | 90 mm | 740 g | 370 | Y | Jan 2023 | US$ 1 999 | amazon.com | |
| 17. | Pentax MX-1 | 122 mm | 61 mm | 51 mm | 391 g | 290 | n | Jan 2013 | US$ 499 | ebay.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 TG-7 was launched at a lower price than the S1 II, despite having a lens built in. 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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the OM System TG-7 features a 1/2.3-inch sensor and the Panasonic S1 II a full frame sensor. The sensor area in the S1 II is 2957 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.0. The sensor in the TG-7 has a native 4:3 aspect ratio, while the one in the S1 II offers a 3:2 aspect.

With 24MP, the S1 II offers a higher resolution than the TG-7 (12MP), but the S1 II nevertheless has larger individual pixels (pixel pitch of 5.97μm versus 1.53μm for the TG-7) due to its larger sensor. Moreover, the S1 II is a somewhat more recent model (by 1 year and 7 months) than the TG-7, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the S1 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Panasonic S1 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S1 II 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 OM System TG-7 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.
The S1 II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the TG-7, the S1 II has the capacity to capture high quality composite images (96MP) 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 OM System Tough TG-7 has a native sensitivity range from ISO 100 to ISO 12800. The corresponding ISO settings for the Panasonic Lumix DC-S1 II are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.
Technology-wise, both cameras are equipped with BSI-CMOS (Backside Illuminated 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 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. 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. | OM System TG-7 | 1/2.3 | 12.0 | 4000 | 3000 | 4K/30p | 20.9 | 12.7 | 1553 | 54 | |
| 2. | Panasonic S1 II | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.8 | 3406 | 97 | |
| 3. | Olympus E-PM1 | Four Thirds | 12.2 | 4032 | 3024 | 1080/60i | 21.0 | 10.3 | 499 | 52 | |
| 4. | Olympus E-PM2 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.7 | 12.2 | 932 | 72 | |
| 5. | Olympus TG-4 | 1/2.3 | 15.9 | 4608 | 3456 | 1080/30p | 20.2 | 11.6 | 737 | 47 | |
| 6. | Olympus TG-5 | 1/2.3 | 12.0 | 4000 | 3000 | 4K/30p | 20.5 | 11.9 | 934 | 50 | |
| 7. | Olympus TG-6 | 1/2.3 | 12.0 | 4000 | 3000 | 4K/30p | 20.7 | 12.2 | 1127 | 52 | |
| 8. | Olympus XZ-1 | 1/1.7 | 10.1 | 3664 | 2752 | 720/30p | 18.8 | 10.4 | 117 | 34 | |
| 9. | Olympus XZ-2 | 1/1.7 | 11.8 | 3968 | 2976 | 1080/30p | 20.4 | 11.3 | 216 | 49 | |
| 10. | Panasonic FZ330 | 1/2.3 | 12.0 | 4000 | 3000 | 4K/30p | 19.3 | 11.0 | 97 | 38 | |
| 11. | Panasonic GH7 | Four Thirds | 25.0 | 5776 | 4336 | 5.7K/60p | 23.4 | 13.6 | 1784 | 78 | |
| 12. | Panasonic LX7 | 1/1.7 | 10.0 | 3648 | 2736 | 1080/60p | 20.7 | 11.7 | 147 | 50 | |
| 13. | Panasonic S1 | Full Frame | 24.0 | 6000 | 4000 | 4K/60p | 25.2 | 14.5 | 3333 | 95 | |
| 14. | Panasonic S1R II | Full Frame | 44.2 | 8144 | 5424 | 8K/30p | 25.4 | 14.8 | 3406 | 97 | |
| 15. | Panasonic S5 | Full Frame | 24.0 | 6000 | 4000 | 4K/60p | 25.1 | 14.5 | 2697 | 94 | |
| 16. | Panasonic S5 II | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.6 | 3158 | 96 | |
| 17. | Pentax MX-1 | 1/1.7 | 12.0 | 4000 | 3000 | 1080/30p | 20.4 | 11.3 | 208 | 49 | |
| 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 S1 II provides a better video resolution than the TG-7. It can shoot movie footage at 6K/30p, while the OM System is limited to 4K/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. For example, the S1 II has an electronic viewfinder (5760k dots), which can be very helpful when shooting in bright sunlight. In contrast, the TG-7 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the OM System TG-7 and Panasonic S1 II 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. | OM System TG-7 | none | n | 3.0 / 1040 | fixed | n | 1/2000s | 20.0/s | Y | Y | |
| 2. | Panasonic S1 II | 5760 | n | 3.2 / 1840 | full-flex | Y | 1/8000s | 10.0/s | n | Y | |
| 3. | Olympus E-PM1 | optional | n | 3.0 / 460 | fixed | n | 1/4000s | 5.5/s | n | Y | |
| 4. | Olympus E-PM2 | optional | n | 3.0 / 460 | fixed | Y | 1/4000s | 8.0/s | n | Y | |
| 5. | Olympus TG-4 | none | n | 3.0 / 460 | fixed | n | 1/2000s | 5.0/s | Y | Y | |
| 6. | Olympus TG-5 | none | n | 3.0 / 460 | fixed | n | 1/2000s | 20.0/s | Y | Y | |
| 7. | Olympus TG-6 | none | n | 3.0 / 1040 | fixed | n | 1/2000s | 20.0/s | Y | Y | |
| 8. | Olympus XZ-1 | optional | n | 3.0 / 614 | fixed | n | 1/2000s | 2.0/s | Y | Y | |
| 9. | Olympus XZ-2 | optional | n | 3.0 / 920 | tilting | Y | 1/2000s | 5.0/s | Y | Y | |
| 10. | Panasonic FZ330 | 1440 | n | 3.0 / 1040 | swivel | Y | 1/4000s | 12.0/s | Y | Y | |
| 11. | Panasonic GH7 | 3680 | n | 3.0 / 1840 | full-flex | Y | 1/8000s | 14.0/s | n | Y | |
| 12. | Panasonic LX7 | optional | n | 3.0 / 920 | fixed | n | 1/4000s | 11.0/s | Y | Y | |
| 13. | Panasonic S1 | 5760 | Y | 3.2 / 2100 | full-flex | Y | 1/8000s | 9.0/s | n | Y | |
| 14. | Panasonic S1R II | 5760 | n | 3.2 / 1840 | full-flex | Y | 1/8000s | 9.0/s | n | Y | |
| 15. | Panasonic S5 | 2360 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 7.0/s | n | Y | |
| 16. | Panasonic S5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 9.0/s | n | Y | |
| 17. | Pentax MX-1 | none | n | 3.0 / 920 | tilting | n | 1/8000s | 1.0/s | Y | Y | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
One difference between the cameras concerns the presence of an on-board flash. The TG-7 has one, while the S1 II does not. While the built-in flash of the TG-7 is not very powerful, it can at times be useful as a fill-in light.
The S1 II 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 TG-7 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 S1 II 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 OM System TG-7 and the Panasonic S1 II 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 TG-7 writes its imaging data to SDXC cards, while the S1 II uses CFexpress (type B) or SDXC cards. The S1 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the TG-7 only has one slot. The S1 II supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the TG-7 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 OM System Tough TG-7 and Panasonic Lumix DC-S1 II 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. | OM System TG-7 | - | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 2. | Panasonic S1 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 3. | Olympus E-PM1 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 4. | Olympus E-PM2 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 5. | Olympus TG-4 | - | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 6. | Olympus TG-5 | - | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 7. | Olympus TG-6 | - | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 8. | Olympus XZ-1 | Y | mono / - | - | - | mini | 2.0 | - | - | - | |
| 9. | Olympus XZ-2 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 10. | Panasonic FZ330 | Y | stereo / mono | Y | - | mini | 2.0 | Y | - | - | |
| 11. | Panasonic GH7 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 12. | Panasonic LX7 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 13. | Panasonic S1 | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
| 14. | Panasonic S1R II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 15. | Panasonic S5 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 16. | Panasonic S5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 17. | Pentax MX-1 | - | stereo / mono | - | - | mini | 2.0 | - | - | - |
It is notable that the S1 II has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The TG-7 does not feature such a mic input.
Studio photographers will appreciate that the Panasonic S1 II (unlike the TG-7) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the TG-7 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the TG-7 and the S1 II are recent models that are part of the current product line-up. The TG-7 replaced the earlier Olympus TG-6, while the S1 II followed on from the Panasonic S1. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official OM System and Panasonic websites.
Review summary
So what conclusions can be drawn? Is there a clear favorite between the OM System TG-7 and the Panasonic S1 II? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the OM System Tough TG-7:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Faster burst: Shoots at higher frequency (20 vs 10 flaps/sec) to capture the decisive moment.
- Ready to shoot: Has a lens built-in, whereas the S1 II requires a separate lens.
- More compact: Is smaller (114x66mm vs 134x102mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the S1 II).
- Water-proof: Is rugged and sealed and can thus be used for underwater photography (up to 15m).
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More heavily discounted: Has been on the market for longer (launched in September 2023).

Arguments in favor of the Panasonic Lumix DC-S1 II:
- More detail: Has more megapixels (24 vs 12MP), which boosts linear resolution by 44%.
- 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 image quality: Is equipped with a larger and more technologically advanced 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/30p vs 4K/30p).
- 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.
- 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 (1840k vs 1040k 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 1/2000s) to freeze action.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- 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.
- 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 a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Was introduced somewhat (1 year and 7 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the S1 II is the clear winner of the contest (28 : 10 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 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 OM System TG-7 and the Panasonic S1 II place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the TG-7 or the S1 II perform in practice. 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 where reviews by experts come in. 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. | OM System TG-7 | 4/5 | .. | 4.5/5 | .. | 4/5 | 4/5 | Sep 2023 | US$ 549 | amazon.com | |
| 2. | Panasonic S1 II | .. | .. | .. | .. | .. | .. | May 2025 | US$ 3 199 | amazon.com | |
| 3. | Olympus E-PM1 | .. | 86/100 | .. | 71/100 | 4.5/5 | 4.5/5 | Jun 2011 | US$ 499 | ebay.com | |
| 4. | Olympus E-PM2 | 3/5 | .. | .. | 77/100 | 5/5 | 4.5/5 | Sep 2012 | US$ 499 | ebay.com | |
| 5. | Olympus TG-4 | .. | + | .. | 79/100 | 4/5 | 4/5 | Apr 2015 | US$ 379 | ebay.com | |
| 6. | Olympus TG-5 | .. | + + | 4.5/5 | .. | 4/5 | 4/5 | May 2017 | US$ 449 | ebay.com | |
| 7. | Olympus TG-6 | 4/5 | + + | 4.5/5 | 76/100 | 4/5 | 4/5 | May 2019 | US$ 449 | ebay.com | |
| 8. | Olympus XZ-1 | 4/5 | .. | .. | 74/100 | 4.5/5 | 4.5/5 | Jan 2011 | US$ 499 | ebay.com | |
| 9. | Olympus XZ-2 | 4/5 | + | .. | .. | 4.5/5 | 4.5/5 | Sep 2012 | US$ 599 | ebay.com | |
| 10. | Panasonic FZ330 | .. | + + | .. | .. | 4.5/5 | 4.5/5 | Jul 2015 | US$ 599 | amazon.com | |
| 11. | Panasonic GH7 | .. | .. | .. | .. | .. | .. | Jun 2024 | US$ 2 199 | amazon.com | |
| 12. | Panasonic LX7 | 3/5 | + + | .. | 75/100 | 4/5 | 4.5/5 | Jul 2012 | US$ 499 | ebay.com | |
| 13. | Panasonic S1 | 4.5/5 | + + | 4.5/5 | 88/100 | 4.5/5 | 4/5 | Feb 2019 | US$ 2 499 | ebay.com | |
| 14. | Panasonic S1R II | .. | .. | .. | .. | .. | .. | May 2025 | US$ 3 299 | amazon.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. | Panasonic S5 II | 4.5/5 | + + | 5/5 | 90/100 | 4.5/5 | 5/5 | Jan 2023 | US$ 1 999 | amazon.com | |
| 17. | Pentax MX-1 | 3/5 | .. | .. | 74/100 | 4/5 | 4/5 | Jan 2013 | US$ 499 | 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. 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Check TG-7 price at
amazon.com

Check S1 II price at
amazon.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 make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1D vs OM System TG-7
- Canon 650D vs OM System TG-7
- Fujifilm X-E5 vs OM System TG-7
- Fujifilm X-E5 vs Panasonic S1 II
- Fujifilm X-T5 vs Panasonic S1 II
- Leica SL3 vs Panasonic S1 II
- Nikon D5600 vs OM System TG-7
- Nikon Z5 II vs Panasonic S1 II
- Nikon Z50 II vs Panasonic S1 II
- OM System OM-5 vs Panasonic S1 II
- OM System TG-7 vs Sony RX1R II
- Olympus E-M5 III vs OM System TG-7
Specifications: OM System TG-7 vs Panasonic S1 II
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 | OM System TG-7 | Panasonic S1 II |
|---|---|---|
| Camera Type | Fixed lens compact camera | Mirrorless system camera |
| Camera Lens | 25-100mm f/2.0-4.9 | Leica L mount lenses |
| Launch Date | September 2023 | May 2025 |
| Launch Price | USD 549 | USD 3,199 |
| Sensor Specs | OM System TG-7 | Panasonic S1 II |
| Sensor Technology | BSI-CMOS | BSI-CMOS |
| Sensor Format | 1/2.3" Sensor | Full Frame Sensor |
| Sensor Size | 6.17 x 4.55 mm | 35.8 x 23.9 mm |
| Sensor Area | 28.0735 mm2 | 855.62 mm2 |
| Sensor Diagonal | 7.7 mm | 43 mm |
| Crop Factor | 5.6x | 1.0x |
| Sensor Resolution | 12 Megapixels | 24 Megapixels |
| Image Resolution | 4000 x 3000 pixels | 6000 x 4000 pixels |
| Pixel Pitch | 1.53 μm | 5.97 μm |
| Pixel Density | 42.74 MP/cm2 | 2.80 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 4K/30p Video | 6K/30p Video |
| ISO Setting | 100 - 12,800 ISO | 100 - 51,200 ISO |
| ISO Boost | no Enhancement | 50 - 204,800 ISO |
| Image Processor | TruePic VIII | Venus |
| Screen Specs | OM System TG-7 | Panasonic S1 II |
| Viewfinder Type | no viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | |
| Viewfinder Magnification | 0.78x | |
| Viewfinder Resolution | 5760k dots | |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.2inch |
| LCD Resolution | 1040k dots | 1840k dots |
| LCD Attachment | Fixed screen | Fully flexible screen |
| Touch Input | no Touchscreen | Touchscreen |
| Shooting Specs | OM System TG-7 | Panasonic S1 II |
| Focus System | Contrast-detect AF | On-Sensor Phase-detect |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/2000s | 1/8000s |
| Continuous Shooting | 20 shutter flaps/s | 10 shutter flaps/s |
| Electronic Shutter | no E-Shutter | up to 1/16000s |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | In-body stabilization | In-body stabilization |
| Fill Flash | Built-in 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 | UHS-I | UHS-II |
| Connectivity Specs | OM System TG-7 | Panasonic S1 II |
| External Flash | no Hotshoe | Hotshoe |
| Studio Flash | no PC Sync | PC Sync socket |
| USB Connector | USB 2.0 | USB 3.2 |
| HDMI Port | micro HDMI | full HDMI |
| Microphone Port | no MIC socket | External MIC port |
| Headphone Socket | no Headphone port | Headphone port |
| Wifi Support | Wifi built-in | Wifi built-in |
| Bluetooth Support | no Bluetooth | Bluetooth built-in |
| Geotagging | GPS built-in | no internal GPS |
| Body Specs | OM System TG-7 | Panasonic S1 II |
| Environmental Sealing | Waterproof body (15m) | Weathersealed body |
| Battery Type | OM System LI-92B | Panasonic DMW-BLK22 |
| Battery Life (CIPA) | 330 shots per charge | 350 shots per charge |
| In-Camera Charging | USB charging | USB charging |
| Body Dimensions |
114 x 66 x 33 mm (4.5 x 2.6 x 1.3 in) |
134 x 102 x 92 mm (5.3 x 4.0 x 3.6 in) |
| Camera Weight | 249 g (8.8 oz) | 800 g (28.2 oz) |

Check TG-7 price at
amazon.com

Check S1 II price at
amazon.com
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