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Canon 100D vs Pentax K-3 III

The Canon EOS 100D (called Canon SL1 in some regions) and the Pentax K-3 III are two digital cameras that were revealed to the public, respectively, in March 2013 and March 2021. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 17.9 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
Canon 100D
versus
Pentax K-3 III
Canon 100D   Pentax K-3 III
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Pentax K mount lenses
17.9 MP – APS-C sensor 25.6 MP – APS-C sensor
1080/30p Video 4K/30p Video
ISO 100-12,800 (100 - 25,600) ISO 100-160,000
Optical viewfinder Optical viewfinder
3.0" LCD – 1040k dots 3.2" LCD – 1620k dots
Fixed touchscreen Fixed touchscreen
4.9 shutter flaps per second 12 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
380 shots per battery charge800 shots per battery charge
117 x 91 x 69 mm, 407 g 135 x 104 x 74 mm, 820 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 100D 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.

Body comparison

The physical size and weight of the Canon 100D and the Pentax K-3 III are illustrated 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 dimensions are rounded to the nearest millimeter.

The 100D can be obtained in two different colors (black, white), while the K-3 III is also available in two color-versions, but different ones (black, silver).

Size Canon 100D vs Pentax K-3 III
Compare 100D versus K-3 III top
Comparison 100D 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 notably larger (32 percent) than the Canon 100D. Moreover, the K-3 III is substantially heavier (101 percent) than the 100D. It is noteworthy in this context that the K-3 III is splash and dust-proof, while the 100D 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the 100D gets 380 shots out of its LP-E12 battery, while the K-3 III can take 800 images on a single charge of its D-LI90 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 100D 117 mm 91 mm 69 mm 407 g 380 n Mar 2013 549ebay.com
2.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 1,999 amazon.com
3.
 
Canon 4000D 129 mm 102 mm 77 mm 436 g 500 n Feb 2018 399 amazon.com
4.
 
Canon 200D 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549ebay.com
5.
 
Canon 7D II 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799ebay.com
6.
 
Canon 1200D 130 mm 100 mm 78 mm 480 g 500 n Feb 2014 449ebay.com
7.
 
Canon 700D 133 mm 100 mm 79 mm 580 g 440 n Mar 2013 649ebay.com
8.
 
Canon G16 109 mm 76 mm 40 mm 356 g 360 n Aug 2013 549ebay.com
9.
 
Canon 650D 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849ebay.com
10.
 
Canon M 109 mm 66 mm 32 mm 298 g 230 n Jul 2012 599ebay.com
11.
 
Canon 600D 133 mm 100 mm 80 mm 570 g 440 n Feb 2011 599ebay.com
12.
 
Panasonic S5 133 mm 98 mm 82 mm 714 g 440 Y Sep 2020 1,999 amazon.com
13.
 
Panasonic G6 122 mm 85 mm 71 mm 390 g 340 n Apr 2013 599ebay.com
14.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099ebay.com
15.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 amazon.com
16.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099ebay.com
17.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 100D was launched at a markedly lower price (by 73 percent) than the K-3 III, 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.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the K-3 III is 9 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (100D) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 100D and Pentax K-3 III sensor measures

With 25.6MP, the K-3 III offers a higher resolution than the 100D (17.9MP), but the K-3 III has smaller individual pixels (pixel pitch of 3.76μm versus 4.31μm for the 100D). Yet, the K-3 III is a much more recent model (by 8 years) than the 100D, 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 Canon 100D are 25.9 x 17.3 inches or 65.8 x 43.9 cm for good quality, 20.7 x 13.8 inches or 52.7 x 35.1 cm for very good quality, and 17.3 x 11.5 inches or 43.9 x 29.3 cm for excellent quality prints.

The 100D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the 100D, 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 Canon EOS 100D has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Pentax K-3 III are ISO 100 to ISO 160000 (no boost).

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.

100D versus K-3 III MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 100D APS-C 17.9 5184 34561080/30p21.811.384363
2.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p24.213.7208385
3.
 
Canon 4000D APS-C 17.9 5184 34561080/30p21.911.469563
4.
 
Canon 200D APS-C 24.0 6000 40001080/60p23.613.4104179
5.
 
Canon 7D II APS-C 20.0 5472 36481080/60p22.411.8108270
6.
 
Canon 1200D APS-C 17.9 5184 34561080/30p21.911.372463
7.
 
Canon 700D APS-C 17.9 5184 34561080/30p21.711.268161
8.
 
Canon G16 1/1.7 12.0 4000 30001080/60p21.011.723054
9.
 
Canon 650D APS-C 17.9 5184 34561080/30p21.711.272262
10.
 
Canon M APS-C 17.9 5184 34561080/30p22.111.282765
11.
 
Canon 600D APS-C 17.9 5184 34561080/30p22.111.579365
12.
 
Panasonic S5 Full Frame 24.0 6000 40004K/60p25.114.5269794
13.
 
Panasonic G6 Four Thirds 15.9 4608 34561080/60p21.311.563961
14.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
15.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
16.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
17.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
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 are equipped with sensors that have a sufficiently high read-out speed for moving images, but the K-3 III provides a better video resolution than the 100D. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 100D and the K-3 III are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the K-3 III offers a wider field of view (100%) than the one in the 100D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the K-3 III has a higher magnification (0.70x vs 0.54x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon 100D and Pentax K-3 III along with similar information for a selection of comparators.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon 100Doptical n3.0 / 1040 fixed Y 1/4000s 4.9/s Y n
2.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0/s n Y
3.
 
Canon 4000Doptical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
4.
 
Canon 200Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
5.
 
Canon 7D IIoptical Y3.0 / 1040 fixed n 1/8000s 10.0/s Y n
6.
 
Canon 1200Doptical n3.0 / 460 fixed n 1/4000s 3.0/s Y n
7.
 
Canon 700Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
8.
 
Canon G16optical n3.0 / 922 fixed n 1/4000s 2.2/s Y Y
9.
 
Canon 650Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
10.
 
Canon Mnone n3.0 / 1040 fixed Y 1/4000s 4.3/s n n
11.
 
Canon 600Doptical n3.0 / 1040 swivel n 1/4000s 3.7/s Y n
12.
 
Panasonic S52360 n3.0 / 1840 swivel Y 1/8000s 7.0/s n Y
13.
 
Panasonic G61440 n3.0 / 1036 swivel Y 1/4000s 7.0/s Y n
14.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
15.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
16.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
17.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
Notes: *) 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 100D has one, while the K-3 III does not. While the built-in flash of the 100D is not very powerful, it can at times be useful as a fill-in light.

The Pentax K-3 III 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.

Concerning the storage of imaging data, both the 100D 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 100D only has one slot. The K-3 III supports UHS-II cards (on its first slot), while the 100D can use UHS-I 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 Canon EOS 100D 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
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 100DYmono / monoY-mini2.0---
2.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
3.
 
Canon 4000DYmono / mono--mini2.0YY-
4.
 
Canon 200DYstereo / monoY-mini2.0YYY
5.
 
Canon 7D IIYstereo / monoYYmini3.0---
6.
 
Canon 1200DYmono / mono--mini2.0---
7.
 
Canon 700DYstereo / monoY-mini2.0---
8.
 
Canon G16Ystereo / mono--mini2.0Y--
9.
 
Canon 650DYstereo / monoY-mini2.0---
10.
 
Canon MYstereo / monoY-mini2.0---
11.
 
Canon 600DYmono / monoY-mini2.0---
12.
 
Panasonic S5Ystereo / monoYYmicro3.2Y-Y
13.
 
Panasonic G6Ystereo / monoY-mini2.0YY-
14.
 
Pentax KPYstereo / monoY--2.0Y--
15.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
16.
 
Pentax K-3 IIYmono / monoYYmini3.0---
17.
 
Pentax K-3Ymono / monoYYmini3.0---

It is notable that the K-3 III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 100D does not provide wifi capability.

Studio photographers will appreciate that the Pentax K-3 III (unlike the 100D) 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 K-3 III has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

The K-3 III is a recent model that features in the current product line-up of Pentax. In contrast, the 100D has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the 100D was succeeded by the Canon 200D. Further information on the features and operation of the 100D and K-3 III can be found, respectively, in the Canon 100D Manual (free pdf) or the online Pentax K-3 III Manual.

Review summary

So what conclusions can be drawn? Is the Canon 100D better than the Pentax K-3 III or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Canon EOS 100D:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More compact: Is smaller (117x91mm vs 135x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 413g or 50 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (73 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in March 2013).

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Arguments in favor of the Pentax K-3 III:

  • More detail: Has more megapixels (25.6 vs 17.9MP), which boosts linear resolution by 19%.
  • 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 (4K/30p vs 1080/30p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.54x).
  • 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).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (12 vs 4.9 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (800 versus 380) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • 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 a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 8 years of technical progress since the 100D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the K-3 III is the clear winner of the contest (24 : 7 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.

100D 07:24 K-3 III

How about other alternatives? Do the specifications of the Canon 100D and the Pentax K-3 III place the cameras among the top in their class? Find out in the latest Best DSLR 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 incomplete and does no justice, for example, to the way the 100D or the K-3 III perform in practice. 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 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 100D4/5+..78/1004/54/5 Mar 2013 549ebay.com
2.
 
Pentax K-3 III4/5..3/5..4.5/5.. Mar 2021 1,999 amazon.com
3.
 
Canon 4000D..o3/5..3.5/53.5/5 Feb 2018 399 amazon.com
4.
 
Canon 200D4/5+ +4/578/1004.5/54.5/5 Jun 2017 549ebay.com
5.
 
Canon 7D II4.5/5+3.5/584/1004/54.5/5 Sep 2014 1,799ebay.com
6.
 
Canon 1200D3/5+....4/54.5/5 Feb 2014 449ebay.com
7.
 
Canon 700D......76/1004.5/54.5/5 Mar 2013 649ebay.com
8.
 
Canon G164/5+....4.5/54.5/5 Aug 2013 549ebay.com
9.
 
Canon 650D4/5+ +..77/1004.5/54.5/5 Jun 2012 849ebay.com
10.
 
Canon M3/5+....4/54/5 Jul 2012 599ebay.com
11.
 
Canon 600D3/5o..77/1004.5/54.5/5 Feb 2011 599ebay.com
12.
 
Panasonic S54.5/5+ +4.5/588/1004.5/54.5/5 Sep 2020 1,999 amazon.com
13.
 
Panasonic G64/5+ +....5/54.5/5 Apr 2013 599ebay.com
14.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099ebay.com
15.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 649 amazon.com
16.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099ebay.com
17.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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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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.

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    Specifications: Canon 100D 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 Canon 100D Pentax K-3 III
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Pentax K mount lenses
    Launch Date March 2013 March 2021
    Launch Price USD 549 USD 1,999
    Sensor Specs Canon 100D Pentax K-3 III
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 22.3 x 14.9 mm 23.3 x 15.5 mm
    Sensor Area 332.27 mm2 361.15 mm2
    Sensor Diagonal 26.8 mm 28 mm
    Crop Factor 1.6x 1.5x
    Sensor Resolution 17.9 Megapixels 25.6 Megapixels
    Image Resolution 5184 x 3456 pixels 6192 x 4128 pixels
    Pixel Pitch 4.31 μm 3.76 μm
    Pixel Density 5.39 MP/cm2 7.08 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/30p Video 4K/30p Video
    ISO Setting 100 - 12,800 ISO 100 - 160,000 ISO
    ISO Boost 100 - 25,600 ISO no Enhancement
    Image Processor DIGIC 5 PRIME V
    DXO Sensor Quality (score) 63 ..
    DXO Color Depth (bits) 21.8 ..
    DXO Dynamic Range (EV) 11.3 ..
    DXO Low Light (ISO) 843 ..
    Screen Specs Canon 100D Pentax K-3 III
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.54x 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 Touchscreen Touchscreen
    Shooting Specs Canon 100D Pentax K-3 III
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 4.9 shutter flaps/s 12 shutter flaps/s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-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 Canon 100D Pentax K-3 III
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.2
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Geotagging no internal GPS GPS built-in
    Body Specs Canon 100D Pentax K-3 III
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type LP-E12 D-LI90
    Battery Life (CIPA)380 shots per charge800 shots per charge
    Body Dimensions 117 x 91 x 69 mm
    (4.6 x 3.6 x 2.7 in)
    135 x 104 x 74 mm
    (5.3 x 4.1 x 2.9 in)
    Camera Weight 407 g (14.4 oz) 820 g (28.9 oz)
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