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Canon 1D X Mark III vs Pentax K-1

The Canon EOS-1D X Mark III and the Pentax K-1 are two digital cameras that were revealed to the public, respectively, in January 2020 and February 2016. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with a full frame sensor. The Canon has a resolution of 20 megapixels, whereas the Pentax provides 36.2 MP.

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

Headline Specifications
Canon 1D X Mark III
versus
Pentax K-1
Canon 1D X Mark III   Pentax K-1
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Pentax K mount lenses
20 MP – Full Frame sensor 36.2 MP – Full Frame sensor
4K/60p Video 1080/60i Video
ISO 100-102,400 (50 - 819,200) ISO 100-204,800
Optical viewfinder Optical viewfinder
3.2" LCD – 2100k dots 3.2" LCD – 1037k dots
Fixed touchscreen Fully flexible screen (no touchscreen)
20 shutter flaps per second 4.4 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
2850 shots per battery charge760 shots per battery charge
158 x 168 x 83 mm, 1440 g 137 x 110 x 86 mm, 1010 g
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Check 1DX Mark III price at
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Check K-1 offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D X Mark III and the Pentax K-1? 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 Canon 1D X Mark III and the Pentax K-1 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 K-1 can be obtained in two different colors (black, silver), while the 1DX Mark III is only available in black.

Size Canon 1D X Mark III vs Pentax K-1
Compare 1DX Mark III versus K-1 top
Comparison 1DX Mark III or K-1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-1 is considerably smaller (43 percent) than the Canon 1D X Mark III. Moreover, the K-1 is markedly lighter (30 percent) than the 1DX Mark III. 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.

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 1DX Mark III gets 2850 shots out of its Canon LP-E19 battery, while the K-1 can take 760 images on a single charge of its Pentax D-LI90 power pack. As can be seen in the images above, the 1DX Mark III has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the K-1, Pentax provides the D-BG6 vertical grip as an optional accessory (see here on ebay).

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 1D X Mark III 158 mm 168 mm 83 mm 1440 g 2850 Y Jan 2020 6,499 amazon.com
2.
 
Pentax K-1 137 mm 110 mm 86 mm 1010 g 760 Y Feb 2016 1,799ebay.com
3.
 
Canon R3 150 mm 143 mm 87 mm 1015 g 760 Y Sep 2021 5,999 amazon.com
4.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999ebay.com
5.
 
Canon 5D Mark IV 151 mm 116 mm 76 mm 890 g 900 Y Aug 2016 3,499 amazon.com
6.
 
Canon 1D C 158 mm 164 mm 83 mm 1545 g 1120 Y Apr 2012 14,999ebay.com
7.
 
Canon 5D Mark III 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499ebay.com
8.
 
Canon 6D 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 2,099ebay.com
9.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799ebay.com
10.
 
Canon 5D Mark II 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 3,499ebay.com
11.
 
Canon 1Ds Mark III 150 mm 160 mm 80 mm 1385 g 1800 Y Aug 2007 7,999ebay.com
12.
 
Canon 1Ds Mark II 156 mm 158 mm 80 mm 1215 g 1200 Y Sep 2004 7,999ebay.com
13.
 
Nikon D6 160 mm 163 mm 92 mm 1270 g 3580 Y Feb 2020 6,499 amazon.com
14.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 Y Jan 2016 1,999ebay.com
15.
 
Pentax K-1 II 137 mm 110 mm 86 mm 1010 g 670 Y Feb 2018 1,999 amazon.com
16.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
17.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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The price is, of course, an important factor in any camera decision. 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 K-1 was launched at a markedly lower price (by 72 percent) than the 1DX Mark 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. 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. 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.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 1D X Mark III and Pentax K-1 sensor measures

Despite having a slightly smaller sensor, the K-1 offers a higher resolution of 36.2 megapixels, compared with 20 MP of the 1DX Mark III. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.88μm versus 6.57μm for the 1DX Mark III). Moreover, it should be noted that the 1DX Mark III is much more recent (by 3 years and 10 months) than the K-1, and its sensor will 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 the K-1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-1 for good quality output (200 dots per inch) amounts to 36.8 x 24.6 inches or 93.5 x 62.4 cm, for very good quality (250 dpi) 29.4 x 19.6 inches or 74.8 x 49.9 cm, and for excellent quality (300 dpi) 24.5 x 16.4 inches or 62.3 x 41.6 cm. The corresponding values for the Canon 1D X Mark III are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.

The 1DX Mark III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the 1DX Mark III, the K-1 has the capacity to capture high quality composite images 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-1D X Mark III has a native sensitivity range from ISO 100 to ISO 102400, which can be extended to ISO 50-819200. The corresponding ISO settings for the Pentax K-1 are ISO 100 to ISO 204800 (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.

1DX Mark III versus K-1 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"). Of the two cameras under consideration, the K-1 has a markedly higher DXO score than the 1DX Mark III (overall score 5 points higher), which will translate into better image quality. The advantage is based on 1.2 bits higher color depth, 0.1 EV in additional dynamic range, and -0 stops in additional low light sensitivity. 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 1D X Mark III Full Frame 20.0 5472 36484K/60p24.214.5324891
2.
 
Pentax K-1 Full Frame 36.2 7360 49121080/60i25.414.6328096
3.
 
Canon R3 Full Frame 24.0 6000 40006K/60p25.014.7408696
4.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
5.
 
Canon 5D Mark IV Full Frame 30.1 6720 44804K/30p24.813.6299591
6.
 
Canon 1D C Full Frame 17.9 5184 34564K/24p24.313.0215585
7.
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381
8.
 
Canon 6D Full Frame 20.0 5472 36481080/30p23.812.1234082
9.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
10.
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579
11.
 
Canon 1Ds Mark III Full Frame 21.0 5616 3744none24.012.0166380
12.
 
Canon 1Ds Mark II Full Frame 16.6 4992 3328none23.311.3148074
13.
 
Nikon D6 Full Frame 20.7 5568 37124K/30p25.314.3288695
14.
 
Nikon D500 APS-C 20.7 5568 37124K/30p24.014.0132483
15.
 
Pentax K-1 II Full Frame 36.2 7360 49121080/60i25.114.0269893
16.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
17.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the 1DX Mark III provides a higher video resolution than the K-1. It can shoot video footage at 4K/60p, while the Pentax is limited to 1080/60i.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The 1DX Mark III and the K-1 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the 1DX Mark III has a higher magnification than the one of the K-1 (0.76x vs 0.70x), 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 1D X Mark III and Pentax K-1 along with similar information for a selection of comparators.

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Core Features
# image 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 1D X Mark IIIoptical Y3.2 / 2100 fixed Y 1/8000s 20.0/s n n
2.
 
Pentax K-1optical Y3.2 / 1037 full-flex n 1/8000s 4.4/s n Y
3.
 
Canon R35760 Y3.2 / 4150 swivel Y 1/8000s 12.0/s n Y
4.
 
Canon 1D X Mark IIoptical Y3.2 / 1620 fixed Y 1/8000s 16.0/s n n
5.
 
Canon 5D Mark IVoptical Y3.2 / 1620 fixed Y 1/8000s 7.0/s n n
6.
 
Canon 1D Coptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
7.
 
Canon 5D Mark IIIoptical Y3.2 / 1040 fixed n 1/8000s 6.0/s n n
8.
 
Canon 6Doptical Y3.0 / 1040 fixed n 1/4000s 4.5/s n n
9.
 
Canon 1D Xoptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
10.
 
Canon 5D Mark IIoptical Y3.0 / 920 fixed n 1/8000s 3.9/s n n
11.
 
Canon 1Ds Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 5.0/s n n
12.
 
Canon 1Ds Mark IIoptical Y2.0 / 230 fixed n 1/8000s 4.0/s n n
13.
 
Nikon D6optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
14.
 
Nikon D500optical Y3.2 / 2359 tilting Y 1/8000s 10.0/s n n
15.
 
Pentax K-1 IIoptical Y3.2 / 1037 full-flex n 1/8000s 4.4/s n Y
16.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
17.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The 1DX Mark III has a touchscreen, while the K-1 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The Canon 1D X Mark III and the Pentax K-1 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 1DX Mark III writes its imaging data to CFexpress (type B) cards, while the K-1 uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

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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 Canon EOS-1D X Mark III and Pentax K-1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 1D X Mark IIIYmono / monoYYmini3.1Y-Y
2.
 
Pentax K-1Ystereo / monoYYmicro2.0Y--
3.
 
Canon R3Ystereo / monoYYmicro3.2Y-Y
4.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
5.
 
Canon 5D Mark IVYmono / monoYYmini3.0YY-
6.
 
Canon 1D CYmono / monoYYmini2.0---
7.
 
Canon 5D Mark IIIYmono / monoYYmini2.0---
8.
 
Canon 6DYmono / monoY-mini2.0Y--
9.
 
Canon 1D XYmono / -Y-mini2.0---
10.
 
Canon 5D Mark IIYmono / monoY-mini2.0---
11.
 
Canon 1Ds Mark IIIYmono / ----2.0---
12.
 
Canon 1Ds Mark IIY- / ----2.0---
13.
 
Nikon D6Ystereo / monoYYmini3.1Y-Y
14.
 
Nikon D500Ystereo / monoYYmini3.0YYY
15.
 
Pentax K-1 IIYstereo / monoYYmicro2.0Y--
16.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
17.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
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Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Travel and landscape photographers will find it useful that both cameras feature internal geolocalization sensors and can record GPS coordinates in their EXIF data.

The 1DX Mark III is a recent model that features in the current product line-up of Canon. In contrast, the K-1 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the K-1 was succeeded by the Pentax K-1 II. Further information on the features and operation of the 1DX Mark III and K-1 can be found, respectively, in the Canon 1D X Mark III Manual (free pdf) or the online Pentax K-1 Manual.

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Review summary

So how do things add up? Which of the two cameras – the Canon 1D X Mark III or the Pentax K-1 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Advantages of the Canon EOS-1D X Mark III:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher definition movie capture (4K/60p vs 1080/60i).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.70x).
  • More detailed LCD: Has a higher resolution rear screen (2100k vs 1037k dots).
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (20 vs 4.4 flaps/sec) to capture the decisive moment.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (2850 versus 760) on a single battery charge.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More modern: Reflects 3 years and 10 months of technical progress since the K-1 launch.

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Arguments in favor of the Pentax K-1:

  • More detail: Has more megapixels (36.2 vs 20MP), which boosts linear resolution by 35%.
  • 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: Scores markedly higher (5 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • More compact: Is smaller (137x110mm vs 158x168mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 430g or 30 percent) and is thus easier to take along.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More affordable: Was introduced into a lower priced category (72 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in February 2016).

If the count of relative strengths (bullet points above) is taken as a measure, the 1DX Mark III comes out slightly ahead of the K-1 (12 : 11 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

1DX Mark III 12:11 K-1

How about other alternatives? Do the specifications of the Canon 1D X Mark III and the Pentax K-1 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the 1DX Mark III or the K-1 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 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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 1D X Mark III..+ +5/5..4.5/54/5 Jan 2020 6,499 amazon.com
2.
 
Pentax K-15/5....84/1005/55/5 Feb 2016 1,799ebay.com
3.
 
Canon R35/5o4.5/5..5/54.5/5 Sep 2021 5,999 amazon.com
4.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 5,999ebay.com
5.
 
Canon 5D Mark IV4.5/5+ +4/587/1004.5/54.5/5 Aug 2016 3,499 amazon.com
6.
 
Canon 1D C............ Apr 2012 14,999ebay.com
7.
 
Canon 5D Mark III..+ +..82/1004.5/54.5/5 Mar 2012 3,499ebay.com
8.
 
Canon 6D5/5+ +..83/1004.5/54.5/5 Sep 2012 2,099ebay.com
9.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 6,799ebay.com
10.
 
Canon 5D Mark II4/591/100..79/1004/5.. Sep 2008 3,499ebay.com
11.
 
Canon 1Ds Mark III......+ +4.5/5.. Aug 2007 7,999ebay.com
12.
 
Canon 1Ds Mark II......+ +.... Sep 2004 7,999ebay.com
13.
 
Nikon D6....4/5..4.5/54.5/5 Feb 2020 6,499 amazon.com
14.
 
Nikon D5005/5+ +4.7/591/1004.5/55/5 Jan 2016 1,999ebay.com
15.
 
Pentax K-1 II....4.5/579/1004.5/54.5/5 Feb 2018 1,999 amazon.com
16.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
17.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon 1D X Mark III vs Pentax K-1

    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 1D X Mark III Pentax K-1
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Pentax K mount lenses
    Launch Date January 2020 February 2016
    Launch Price USD 6,499 USD 1,799
    Sensor Specs Canon 1D X Mark III Pentax K-1
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Full Frame Sensor
    Sensor Size 36.0 x 24.0 mm 35.9 x 24.0 mm
    Sensor Area 864 mm2 861.6 mm2
    Sensor Diagonal 43.3 mm 43.2 mm
    Crop Factor 1.0x 1.0x
    Sensor Resolution 20 Megapixels 36.2 Megapixels
    Image Resolution 5472 x 3648 pixels 7360 x 4912 pixels
    Pixel Pitch 6.57 μm 4.88 μm
    Pixel Density 2.31 MP/cm2 4.20 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/60p Video 1080/60i Video
    ISO Setting 100 - 102,400 ISO 100 - 204,800 ISO
    ISO Boost 50 - 819,200 ISO no Enhancement
    Image Processor DIGIC X PRIME IV
    DXO Sensor Quality (score) 91 96
    DXO Color Depth (bits) 24.2 25.4
    DXO Dynamic Range (EV) 14.5 14.6
    DXO Low Light (ISO) 3248 3280
    Screen Specs Canon 1D X Mark III Pentax K-1
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.76x 0.70x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.2inch
    LCD Resolution 2100k dots 1037k dots
    LCD Attachment Fixed screen Fully flexible screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon 1D X Mark III Pentax K-1
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 20 shutter flaps/s 4.4 shutter flaps/s
    Shutter Life Expectancy500 000 actuations300 000 actuations
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CFexB cards SDXC cards
    Single or Dual Card Slots Dual card slots Dual card slots
    Connectivity Specs Canon 1D X Mark III Pentax K-1
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.1 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in no Bluetooth
    Geotagging GPS built-in GPS built-in
    Body Specs Canon 1D X Mark III Pentax K-1
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Canon LP-E19 Pentax D-LI90
    Battery Life (CIPA)2850 shots per charge760 shots per charge
    Body Dimensions 158 x 168 x 83 mm
    (6.2 x 6.6 x 3.3 in)
    137 x 110 x 86 mm
    (5.4 x 4.3 x 3.4 in)
    Camera Weight 1440 g (50.8 oz) 1010 g (35.6 oz)
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