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OM System OM-3 vs Pentax WG-90

The OM System OM-3 and the Pentax WG-90 are two digital cameras that were announced, respectively, in February 2025 and November 2023. The OM-3 is a mirrorless interchangeable lens camera, while the WG-90 is a fixed lens compact. The cameras are based on a Four Thirds (OM-3) and a 1/2.3-inch (WG-90) sensor. The OM System has a resolution of 20.2 megapixels, whereas the Pentax provides 15.9 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
OM System OM-3
versus
Pentax WG-90
OM System OM-3   Pentax WG-90
Mirrorless system camera Fixed lens compact camera
Micro Four Thirds lenses 28-140mm f/3.5-5.5
20.2 MP – Four Thirds sensor 15.9 MP – 1/2.3" sensor
4K/60p Video 1080/60p Video
ISO 80-25,600 (80 - 102,400) ISO 125-6,400
Electronic viewfinder (2360k dots) No viewfinder, LCD framing
3.0" LCD – 1640k dots 2.7" LCD – 230k dots
Swivel touchscreen Fixed screen (not touch-sensitive)
6 shutter flaps per second 8 shutter flaps per second
In-body stabilizationno shake reduction
Weathersealed bodyWaterproof body (14m)
590 shots per battery charge300 shots per battery charge
139 x 89 x 46 mm, 496 g 123 x 62 x 30 mm, 194 g
logo
Check OM-3 price at
amazon.com
logo
Check WG-90 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the OM System OM-3 and the Pentax WG-90? 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.

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Body comparison

The physical size and weight of the OM System OM-3 and the Pentax WG-90 are illustrated 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 OM-3 can be obtained in two different colors (black, silver), while the WG-90 is also available in two color-versions, but different ones (black, blue).

Size OM System OM-3 vs Pentax WG-90
Compare OM-3 versus WG-90 top
Comparison OM-3 or WG-90 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax WG-90 is considerably smaller (38 percent) than the OM System OM-3. 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 WG-90 is water-proof up to 14m and can, thus, be used for underwater photography.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the WG-90 has a lens built in, whereas the OM-3 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the OM-3 and their specifications in the Micro Four Thirds Lens Catalog.

The power pack in the OM-3 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 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.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
OM System OM-3 139 mm 89 mm 46 mm 496 g 590 Y Feb 2025 US$ 1 999 amazon.com
2.
 
Pentax WG-90 123 mm 62 mm 30 mm 194 g 300 Y Nov 2023 US$ 279 amazon.com
3.
 
Fujifilm XP130 110 mm 71 mm 28 mm 207 g 240 Y Jan 2018 US$ 229ebay.com
4.
 
Fujifilm XP140 110 mm 71 mm 28 mm 207 g 240 Y Feb 2019 US$ 229ebay.com
5.
 
Nikon W300 112 mm 66 mm 29 mm 231 g 280 Y May 2017 US$ 389ebay.com
6.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 US$ 1 999ebay.com
7.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 US$ 1 799ebay.com
8.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 US$ 1 199ebay.com
9.
 
OM System OM-1 135 mm 92 mm 73 mm 599 g 520 Y Feb 2022 US$ 2 199ebay.com
10.
 
OM System OM-1 II 135 mm 92 mm 73 mm 599 g 500 Y Jan 2024 US$ 2 399 amazon.com
11.
 
OM System OM-5 125 mm 85 mm 50 mm 414 g 310 Y Oct 2022 US$ 1 199 amazon.com
12.
 
OM System OM-5 II 125 mm 85 mm 50 mm 414 g 310 Y Jun 2025 US$ 1 199 amazon.com
13.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 US$ 1 699ebay.com
14.
 
Panasonic G90 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 US$ 999ebay.com
15.
 
Pentax WG-1000 116 mm 69 mm 51 mm 220 g 300 Y Jun 2024 US$ 229 amazon.com
16.
 
Ricoh WG-60 123 mm 62 mm 30 mm 193 g 300 Y Oct 2018 US$ 279ebay.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.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The WG-90 was launched at a lower price than the OM-3, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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. 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 OM System OM-3 features a Four Thirds sensor and the Pentax WG-90 a 1/2.3-inch sensor. The sensor area in the WG-90 is 88 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

OM System OM-3 and Pentax WG-90 sensor measures

With 20.2MP, the OM-3 offers a higher resolution than the WG-90 (15.9MP), but the OM-3 nevertheless has larger individual pixels (pixel pitch of 3.34μm versus 1.33μm for the WG-90) due to its larger sensor. Moreover, the OM-3 is a somewhat more recent model (by 1 year and 2 months) than the WG-90, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the OM System OM-3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the OM-3 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Pentax WG-90 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 OM-3 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the WG-90, the OM-3 has the capacity to capture high quality composite images (80MP) 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 OM-3 has a native sensitivity range from ISO 80 to ISO 25600, which can be extended to ISO 80-102400. The corresponding ISO settings for the Pentax WG-90 are ISO 125 to ISO 6400 (no boost).

In terms of underlying technology, the OM-3 is build around a Stacked BSI-CMOS sensor, while the WG-90 uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

OM-3 versus WG-90 MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
OM System OM-3 Four Thirds 20.2 5184 38884K/60p23.413.7185278
2.
 
Pentax WG-90 1/2.3 15.9 4608 34561080/60p20.912.8157054
3.
 
Fujifilm XP130 1/2.3 15.9 4608 34561080/60p20.612.1100051
4.
 
Fujifilm XP140 1/2.3 15.9 4608 34564K/15p20.712.2110252
5.
 
Nikon W300 1/2.3 15.9 4608 34564K/30p20.512.093850
6.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
7.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p23.313.1135676
8.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p23.313.1132476
9.
 
OM System OM-1 Four Thirds 20.2 5184 38884K/60p23.413.4155377
10.
 
OM System OM-1 II Four Thirds 20.2 5184 38884K/60p23.413.6174978
11.
 
OM System OM-5 Four Thirds 20.2 5184 38884K/30p23.413.4162278
12.
 
OM System OM-5 II Four Thirds 20.2 5184 38884K/30p23.413.7188978
13.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p23.112.8113874
14.
 
Panasonic G90 Four Thirds 20.2 5184 38884K/30p23.213.0127375
15.
 
Pentax WG-1000 1/2.3 15.9 4608 34561080/30p20.912.8162654
16.
 
Ricoh WG-60 1/2.3 15.9 4608 34561080/60p20.612.2107251
17.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
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 can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the OM-3 provides a higher video resolution than the WG-90. It can shoot video footage at 4K/60p, while the Pentax is limited to 1080/60p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the OM-3 has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the WG-90 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the OM System OM-3 and Pentax WG-90 in connection with corresponding information for a sample of similar cameras.

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Core Features
  empty 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 OM-32360 n3.0 / 1640 swivel Y 1/8000s 6.0/s n Y
2.
 
Pentax WG-90none n2.7 / 230 fixed n 1/4000s 8.0/s Y n
3.
 
Fujifilm XP130none n3.0 / 920 fixed n 1/2000s 10.0/s Y Y
4.
 
Fujifilm XP140none n3.0 / 920 fixed n 1/2000s 10.0/s Y Y
5.
 
Nikon W300none n3.0 / 921 fixed n 1/4000s 7.0/s Y Y
6.
 
Olympus E-M1 II2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
7.
 
Olympus E-M1 III2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
8.
 
Olympus E-M5 III2360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
9.
 
OM System OM-15760 n3.0 / 1640 swivel Y 1/8000s 10.0/s n Y
10.
 
OM System OM-1 II5760 n3.0 / 1640 swivel Y 1/8000s 10.0/s n Y
11.
 
OM System OM-52360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
12.
 
OM System OM-5 II2360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
13.
 
Panasonic G93680 Y3.0 / 1040 swivel Y 1/8000s 20.0/s n Y
14.
 
Panasonic G902360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y Y
15.
 
Pentax WG-1000none n2.7 / 230 fixed n 1/2000s 8.0/s Y n
16.
 
Ricoh WG-60none n2.7 / 230 fixed n 1/4000s 8.0/s Y n
17.
 
Sony A7C2360 n3.0 / 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 differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The OM-3 has a touchscreen, while the WG-90 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The OM-3 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the WG-90 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 OM-3 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 OM-3 and the Pentax WG-90 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.

Concerning the storage of imaging data, both the OM-3 and the WG-90 write their files to SDXC cards. The OM-3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the WG-90 only has one slot. The OM-3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the WG-90 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 OM System OM-3 and Pentax WG-90 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
OM System OM-3Ystereo / monoYYmicro3.0Y-Y
2.
 
Pentax WG-90-mono / mono--micro2.0---
3.
 
Fujifilm XP130-mono / mono--micro2.0Y-Y
4.
 
Fujifilm XP140-mono / mono--micro2.0Y-Y
5.
 
Nikon W300-stereo / mono--micro2.0Y-Y
6.
 
Olympus E-M1 IIYstereo / monoYYmicro3.0Y--
7.
 
Olympus E-M1 IIIYstereo / monoYYmicro3.1Y-Y
8.
 
Olympus E-M5 IIIYstereo / monoY-micro2.0Y-Y
9.
 
OM System OM-1Ystereo / monoYYmicro3.0Y-Y
10.
 
OM System OM-1 IIYstereo / monoYYmicro3.0Y-Y
11.
 
OM System OM-5Ystereo / monoY-micro2.0Y-Y
12.
 
OM System OM-5 IIYstereo / monoY-micro2.0Y-Y
13.
 
Panasonic G9Ystereo / monoYYfull3.0Y-Y
14.
 
Panasonic G90Ystereo / monoYYmicro2.0Y-Y
15.
 
Pentax WG-1000-mono / mono---2.0---
16.
 
Ricoh WG-60-mono / mono--micro2.0---
17.
 
Sony A7CYstereo / monoYYmicro3.2YYY

It is notable that the OM-3 has a hotshoe, while the WG-90 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Both the OM-3 and the WG-90 are recent models that are part of the current product line-up. Neither of the two has a direct predecessor, so perhaps they will constitute the origins of new camera lines for OM System and Pentax. 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 Pentax websites.

Review summary

So what conclusions can be drawn? Which of the two cameras – the OM System OM-3 or the Pentax WG-90 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the OM System OM-3:

  • More detail: Offers more megapixels (20.2 vs 15.9MP) with a 13% higher linear resolution.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • 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 (4K/60p vs 1080/60p).
  • 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 (3.0" vs 2.7") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1640k vs 230k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • 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.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • Longer lasting: Can take more shots (590 versus 300) 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.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 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.
  • 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.
  • More modern: Is somewhat more recent (announced 1 year and 2 months after the WG-90).

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Reasons to prefer the Pentax WG-90:

  • Faster burst: Shoots at higher frequency (8 vs 6 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has an integrated lens, whereas the OM-3 necessitates an extra lens.
  • More compact: Is smaller (123x62mm vs 139x89mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the OM-3).
  • Water-proof: Is rugged and sealed and can thus be used for underwater photography (up to 14m).
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • 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 November 2023).

If the number of relative strengths (bullet points above) is taken as a guide, the OM-3 is the clear winner of the match-up (29 : 8 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional 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.

OM-3 29:08 WG-90

How about other alternatives? Do the specifications of the OM System OM-3 and the Pentax WG-90 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Travel-Zoom Camera listings 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 says little about, for example, the shooting experience and imaging performance of the OM-3 and the WG-90 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
OM System OM-3......86/100.... Feb 2025 US$ 1 999 amazon.com
2.
 
Pentax WG-90............ Nov 2023 US$ 279 amazon.com
3.
 
Fujifilm XP130..o....3.5/54/5 Jan 2018 US$ 229ebay.com
4.
 
Fujifilm XP140..+....3.5/54/5 Feb 2019 US$ 229ebay.com
5.
 
Nikon W300..+....4/54/5 May 2017 US$ 389ebay.com
6.
 
Olympus E-M1 II5/5+ +5/585/1004.5/54.5/5 Sep 2016 US$ 1 999ebay.com
7.
 
Olympus E-M1 III5/5..5/583/1004.5/54/5 Feb 2020 US$ 1 799ebay.com
8.
 
Olympus E-M5 III5/5+5/582/1004.5/54.5/5 Oct 2019 US$ 1 199ebay.com
9.
 
OM System OM-15/5....87/1005/54.5/5 Feb 2022 US$ 2 199ebay.com
10.
 
OM System OM-1 II............ Jan 2024 US$ 2 399 amazon.com
11.
 
OM System OM-55/5..4.5/583/1005/54.5/5 Oct 2022 US$ 1 199 amazon.com
12.
 
OM System OM-5 II............ Jun 2025 US$ 1 199 amazon.com
13.
 
Panasonic G9..+ +5/585/1005/55/5 Nov 2017 US$ 1 699ebay.com
14.
 
Panasonic G904.5/5+4.5/583/1004.5/54.5/5 Apr 2019 US$ 999ebay.com
15.
 
Pentax WG-1000............ Jun 2024 US$ 229 amazon.com
16.
 
Ricoh WG-60............ Oct 2018 US$ 279ebay.com
17.
 
Sony A7C3.5/5..3.5/586/1004/54/5 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 were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

logo
Check OM-3 price at
amazon.com
logo
Check WG-90 price at
amazon.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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: OM System OM-3 vs Pentax WG-90

    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 Specifications
    Camera Model OM System OM-3 Pentax WG-90
    Camera Type Mirrorless system camera Fixed lens compact camera
    Camera Lens Micro Four Thirds lenses 28-140mm f/3.5-5.5
    Launch Date February 2025 November 2023
    Launch Price USD 1,999 USD 279
    Sensor Specs OM System OM-3 Pentax WG-90
    Sensor Technology Stacked BSI-CMOS BSI-CMOS
    Sensor Format Four Thirds Sensor 1/2.3" Sensor
    Sensor Size 17.3 x 13.0 mm 6.17 x 4.55 mm
    Sensor Area 224.9 mm2 28.0735 mm2
    Sensor Diagonal 21.6 mm 7.7 mm
    Crop Factor 2.0x 5.6x
    Sensor Resolution 20.2 Megapixels 15.9 Megapixels
    Image Resolution 5184 x 3888 pixels 4608 x 3456 pixels
    Pixel Pitch 3.34 μm 1.33 μm
    Pixel Density 8.96 MP/cm2 56.73 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/60p Video 1080/60p Video
    ISO Setting 80 - 25,600 ISO 125 - 6,400 ISO
    ISO Boost 80 - 102,400 ISO no Enhancement
    Screen Specs OM System OM-3 Pentax WG-90
    Viewfinder Type Electronic viewfinder no viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.69x
    Viewfinder Resolution 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 2.7inch
    LCD Resolution 1640k dots 230k dots
    LCD Attachment Swivel screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs OM System OM-3 Pentax WG-90
    Focus System On-Sensor Phase-detect Contrast-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 6 shutter flaps/s 8 shutter flaps/s
    Electronic Shutterup to 1/32000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationno handshake reduction
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support UHS-II no
    Connectivity Specs OM System OM-3 Pentax WG-90
    External Flash Hotshoe no Hotshoe
    USB Connector USB 3.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs OM System OM-3 Pentax WG-90
    Environmental SealingWeathersealed bodyWaterproof body (14m)
    Battery Type OM System BLX-1 Pentax D-LI92
    Battery Life (CIPA)590 shots per charge300 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 139 x 89 x 46 mm
    (5.5 x 3.5 x 1.8 in)
    123 x 62 x 30 mm
    (4.8 x 2.4 x 1.2 in)
    Camera Weight 496 g (17.5 oz) 194 g (6.8 oz)
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