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OM System TG-7 vs Pentax K-3 III

The OM System Tough TG-7 and the Pentax K-3 III are two digital cameras that were revealed to the public, respectively, in September 2023 and March 2021. The TG-7 is a fixed lens compact, while the K-3 III is a DSLR. The cameras are based on a 1/2.3-inch (TG-7) and an APS-C (K-3 III) sensor. The OM System has a resolution of 12 megapixels, whereas the Pentax provides 25.6 MP.

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

Headline Specifications
OM System TG-7
versus
Pentax K-3 III
OM System TG-7   Pentax K-3 III
Fixed lens compact camera Digital single lens reflex
25-100mm f/2.0-4.9 Pentax K mount lenses
12 MP – 1/2.3" sensor 25.6 MP – APS-C sensor
4K/30p Video 4K/30p Video
ISO 100-12,800 ISO 100-160,000
No viewfinder, LCD framing Optical viewfinder
3.0" LCD – 1040k dots 3.2" LCD – 1620k dots
Fixed screen (not touch-sensitive) Fixed touchscreen
20 shutter flaps per second 12 shutter flaps per second
In-body stabilizationIn-body stabilization
Waterproof body (15m)Weathersealed body
330 shots per battery charge800 shots per battery charge
114 x 66 x 33 mm, 249 g 135 x 104 x 74 mm, 820 g
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Check TG-7 price at
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Check K-3 III price at
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Going beyond this snapshot of core features and characteristics, what are the differences between the OM System Tough TG-7 and the Pentax K-3 III? 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

An illustration of the physical size and weight of the OM System TG-7 and the Pentax K-3 III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.

The TG-7 can be obtained in two different colors (black, red), while the K-3 III is also available in two color-versions, but different ones (black, silver).

Size OM System TG-7 vs Pentax K-3 III
Compare TG-7 versus K-3 III top
Comparison TG-7 or K-3 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 III is considerably larger (87 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 K-3 III 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 K-3 III can take 800 images on a single charge of its Pentax D-LI90 power pack. The power pack in the TG-7 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 TG-7 114 mm 66 mm 33 mm 249 g 330 Y Sep 2023 EUR 549 amazon.com
2.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 EUR 1 999 amazon.com
3.
 
Olympus E-PM1 110 mm 64 mm 34 mm 265 g 330 n Jun 2011 EUR 449ebay.com
4.
 
Olympus E-PM2 110 mm 64 mm 34 mm 269 g 360 n Sep 2012 EUR 499ebay.com
5.
 
Olympus TG-4 112 mm 66 mm 31 mm 247 g 380 Y Apr 2015 EUR 399ebay.com
6.
 
Olympus TG-5 113 mm 66 mm 32 mm 250 g 340 Y May 2017 EUR 479ebay.com
7.
 
Olympus TG-6 113 mm 66 mm 32 mm 253 g 340 Y May 2019 EUR 479ebay.com
8.
 
Olympus XZ-1 111 mm 65 mm 42 mm 275 g 320 n Jan 2011 EUR 480ebay.com
9.
 
Olympus XZ-2 113 mm 65 mm 48 mm 346 g 340 n Sep 2012 EUR 599ebay.com
10.
 
Panasonic FZ330 132 mm 92 mm 117 mm 691 g 380 Y Jul 2015 EUR 449 amazon.com
11.
 
Panasonic LX7 111 mm 68 mm 46 mm 298 g 330 n Jul 2012 EUR 529ebay.com
12.
 
Panasonic S5 133 mm 98 mm 82 mm 714 g 440 Y Sep 2020 EUR 1 999 amazon.com
13.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 EUR 1 299ebay.com
14.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 EUR 999ebay.com
15.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 EUR 699ebay.com
16.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 EUR 1 299ebay.com
17.
 
Pentax MX-1 122 mm 61 mm 51 mm 391 g 290 n Jan 2013 EUR 499ebay.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 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 K-3 III, 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.

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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the OM System TG-7 features a 1/2.3-inch sensor and the Pentax K-3 III an APS-C sensor. The sensor area in the K-3 III is 1189 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.5. The sensor in the TG-7 has a native 4:3 aspect ratio, while the one in the K-3 III offers a 3:2 aspect.

OM System TG-7 and Pentax K-3 III sensor measures

With 25.6MP, the K-3 III offers a higher resolution than the TG-7 (12MP), but the K-3 III nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 1.53μm for the TG-7) due to its larger sensor. However, the TG-7 is a much more recent model (by 2 years and 5 months) than the K-3 III, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the K-3 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-3 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 III for good quality output (200 dots per inch) amounts to 31 x 20.6 inches or 78.6 x 52.4 cm, for very good quality (250 dpi) 24.8 x 16.5 inches or 62.9 x 41.9 cm, and for excellent quality (300 dpi) 20.6 x 13.8 inches or 52.4 x 35 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.

Unlike the TG-7, the K-3 III has the capacity to capture high quality composite images (YESMP) 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 Pentax K-3 III are ISO 100 to ISO 160000 (no boost).

In terms of underlying technology, the TG-7 is build around a BSI-CMOS sensor, while the K-3 III 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.

TG-7 versus K-3 III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 TG-7 1/2.3 12.0 4000 30004K/30p20.912.7155354
2.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p24.213.7208385
3.
 
Olympus E-PM1 Four Thirds 12.2 4032 30241080/60i21.010.349952
4.
 
Olympus E-PM2 Four Thirds 15.9 4608 34561080/30p22.712.293272
5.
 
Olympus TG-4 1/2.3 15.9 4608 34561080/30p20.211.673747
6.
 
Olympus TG-5 1/2.3 12.0 4000 30004K/30p20.511.993450
7.
 
Olympus TG-6 1/2.3 12.0 4000 30004K/30p20.712.2112752
8.
 
Olympus XZ-1 1/1.7 10.1 3664 2752720/30p18.810.411734
9.
 
Olympus XZ-2 1/1.7 11.8 3968 29761080/30p20.411.321649
10.
 
Panasonic FZ330 1/2.3 12.0 4000 30004K/30p19.311.09738
11.
 
Panasonic LX7 1/1.7 10.0 3648 27361080/60p20.711.714750
12.
 
Panasonic S5 Full Frame 24.0 6000 40004K/60p25.114.5269794
13.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
14.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
15.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
16.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
17.
 
Pentax MX-1 1/1.7 12.0 4000 30001080/30p20.411.320849
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, and both provide the same movie specifications (4K/30p).

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the K-3 III has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the TG-7 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the OM System TG-7, the Pentax K-3 III, and comparable 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 TG-7none n3.0 / 1040 fixed n 1/2000s 20.0/s Y Y
2.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0/s n Y
3.
 
Olympus E-PM1optional n3.0 / 460 fixed n 1/4000s 5.5/s n Y
4.
 
Olympus E-PM2optional n3.0 / 460 fixed Y 1/4000s 8.0/s n Y
5.
 
Olympus TG-4none n3.0 / 460 fixed n 1/2000s 5.0/s Y Y
6.
 
Olympus TG-5none n3.0 / 460 fixed n 1/2000s 20.0/s Y Y
7.
 
Olympus TG-6none n3.0 / 1040 fixed n 1/2000s 20.0/s Y Y
8.
 
Olympus XZ-1optional n3.0 / 614 fixed n 1/2000s 2.0/s Y Y
9.
 
Olympus XZ-2optional n3.0 / 920 tilting Y 1/2000s 5.0/s Y Y
10.
 
Panasonic FZ3301440 n3.0 / 1040 swivel Y 1/4000s 12.0/s Y Y
11.
 
Panasonic LX7optional n3.0 / 920 fixed n 1/4000s 11.0/s Y Y
12.
 
Panasonic S52360 n3.0 / 1840 swivel Y 1/8000s 7.0/s n Y
13.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
14.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
15.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
16.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
17.
 
Pentax MX-1none n3.0 / 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 K-3 III 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 OM System TG-7 and the Pentax K-3 III 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 TG-7 and the K-3 III write their files to SDXC cards. The K-3 III 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 K-3 III supports UHS-II cards (on its first slot), while the TG-7 can use UHS-I cards.

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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 Pentax K-3 III 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 TG-7-stereo / mono--micro2.0Y--
2.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
3.
 
Olympus E-PM1Ystereo / mono--mini2.0---
4.
 
Olympus E-PM2Ystereo / mono--mini2.0---
5.
 
Olympus TG-4-stereo / mono--micro2.0Y--
6.
 
Olympus TG-5-stereo / mono--micro2.0Y--
7.
 
Olympus TG-6-stereo / mono--micro2.0Y--
8.
 
Olympus XZ-1Ymono / ---mini2.0---
9.
 
Olympus XZ-2Ystereo / mono--mini2.0---
10.
 
Panasonic FZ330Ystereo / monoY-mini2.0Y--
11.
 
Panasonic LX7Ystereo / mono--mini2.0---
12.
 
Panasonic S5Ystereo / monoYYmicro3.2Y-Y
13.
 
Pentax K-3Ymono / monoYYmini3.0---
14.
 
Pentax K-3 IIYmono / monoYYmini3.0---
15.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
16.
 
Pentax KPYstereo / monoY--2.0Y--
17.
 
Pentax MX-1-stereo / mono--mini2.0---

It is notable that the K-3 III 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 Pentax K-3 III (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 both cameras feature internal geolocalization sensors and can record GPS coordinates in their EXIF data.

Both the TG-7 and the K-3 III are recent models that are part of the current product line-up. The K-3 III replaced the earlier Pentax K-3 II, while the TG-7 followed on from the Olympus TG-6. Further information on the features and operation of the TG-7 and K-3 III can be found, respectively, in the OM System TG-7 Manual (free pdf) or the online Pentax K-3 III Manual.

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Review summary

So what is the bottom line? Is the OM System TG-7 better than the Pentax K-3 III or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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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 12 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Comes with a built-in lens, while the K-3 III requires a separate lens.
  • More compact: Is smaller (114x66mm vs 135x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the K-3 III).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • 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.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 2 years and 5 months of technical progress since the K-3 III launch.

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Arguments in favor of the Pentax K-3 III:

  • More detail: Has more megapixels (25.6 vs 12MP), which boosts linear resolution by 49%.
  • 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: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • 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 optical viewfinder for image composition and settings control.
  • Easier setting verification: Features a control panel on top to check 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 (1620k vs 1040k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • More flexible: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (800 versus 330) out of a single battery charge.
  • 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).
  • 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 heavily discounted: Has been around for much longer (launched in March 2021).

If the count of relative strengths (bullet points above) is taken as a measure, the K-3 III is the clear winner of the contest (24 : 10 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 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.

TG-7 10:24 K-3 III

How about other alternatives? Do the specifications of the OM System TG-7 and the Pentax K-3 III place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR 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 TG-7 and the K-3 III in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews 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.

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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 TG-74/5..4.5/5..4/54/5 Sep 2023 EUR 549 amazon.com
2.
 
Pentax K-3 III4/5..3/5..4.5/5.. Mar 2021 EUR 1 999 amazon.com
3.
 
Olympus E-PM1..86/100..71/1004.5/54.5/5 Jun 2011 EUR 449ebay.com
4.
 
Olympus E-PM23/5....77/1005/54.5/5 Sep 2012 EUR 499ebay.com
5.
 
Olympus TG-4..+..79/1004/54/5 Apr 2015 EUR 399ebay.com
6.
 
Olympus TG-5..+ +4.5/5..4/54/5 May 2017 EUR 479ebay.com
7.
 
Olympus TG-64/5+ +4.5/576/1004/54/5 May 2019 EUR 479ebay.com
8.
 
Olympus XZ-14/5....74/1004.5/54.5/5 Jan 2011 EUR 480ebay.com
9.
 
Olympus XZ-24/5+....4.5/54.5/5 Sep 2012 EUR 599ebay.com
10.
 
Panasonic FZ330..+ +....4.5/54.5/5 Jul 2015 EUR 449 amazon.com
11.
 
Panasonic LX73/5+ +..75/1004/54.5/5 Jul 2012 EUR 529ebay.com
12.
 
Panasonic S54.5/5+ +4.5/588/1004.5/54.5/5 Sep 2020 EUR 1 999 amazon.com
13.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 EUR 1 299ebay.com
14.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 EUR 999ebay.com
15.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 EUR 699ebay.com
16.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 EUR 1 299ebay.com
17.
 
Pentax MX-13/5....74/1004/54/5 Jan 2013 EUR 499ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time 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.

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Check TG-7 price at
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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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: OM System TG-7 vs Pentax K-3 III

    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 TG-7 Pentax K-3 III
    Camera Type Fixed lens compact camera Digital single lens reflex
    Camera Lens 25-100mm f/2.0-4.9 Pentax K mount lenses
    Launch Date September 2023 March 2021
    Launch Price USD 549 USD 1,999
    Sensor Specs OM System TG-7 Pentax K-3 III
    Sensor Technology BSI-CMOS CMOS
    Sensor Format 1/2.3" Sensor APS-C Sensor
    Sensor Size 6.17 x 4.55 mm 23.3 x 15.5 mm
    Sensor Area 28.0735 mm2 361.15 mm2
    Sensor Diagonal 7.7 mm 28 mm
    Crop Factor 5.6x 1.5x
    Sensor Resolution 12 Megapixels 25.6 Megapixels
    Image Resolution 4000 x 3000 pixels 6192 x 4128 pixels
    Pixel Pitch 1.53 μm 3.76 μm
    Pixel Density 42.74 MP/cm2 7.08 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 100 - 12,800 ISO 100 - 160,000 ISO
    Image Processor TruePic VIII PRIME V
    Screen Specs OM System TG-7 Pentax K-3 III
    Viewfinder Type no viewfinder Optical viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.70x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1040k dots 1620k dots
    LCD Attachment Fixed screen Fixed screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs OM System TG-7 Pentax K-3 III
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/2000s 1/8000s
    Continuous Shooting 20 shutter flaps/s 12 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I Single UHS-II
    Connectivity Specs OM System TG-7 Pentax K-3 III
    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 micro 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 GPS built-in
    Body Specs OM System TG-7 Pentax K-3 III
    Environmental SealingWaterproof body (15m)Weathersealed body
    Battery Type OM System LI-92B Pentax D-LI90
    Battery Life (CIPA)330 shots per charge800 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 114 x 66 x 33 mm
    (4.5 x 2.6 x 1.3 in)
    135 x 104 x 74 mm
    (5.3 x 4.1 x 2.9 in)
    Camera Weight 249 g (8.8 oz) 820 g (28.9 oz)
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    Check K-3 III price at
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