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Canon 1D Mark III vs Pentax K-3 II

The Canon EOS-1D Mark III and the Pentax K-3 II are two digital cameras that were officially introduced, respectively, in February 2007 and April 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-H (1D Mark III) and an APS-C (K-3 II) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Pentax provides 24.1 MP.

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

Headline Specifications
Canon 1D Mark III
versus
Pentax K-3 II
Canon 1D Mark III   Pentax K-3 II
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Pentax K mount lenses
10.1 MP, APS-H Sensor 24.1 MP, APS-C Sensor
no Video 1080/60i Video
ISO 100-3,200 (50 - 6,400) ISO 100-51,200
Optical viewfinder Optical viewfinder
3.0 LCD, 230k dots 3.2 LCD, 1037k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
10 shutter flaps per second 8.3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
2200 shots per battery charge720 shots per battery charge
156 x 157 x 80 mm, 1155 g 131 x 100 x 77 mm, 800 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D Mark III and the Pentax K-3 II? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

An illustration of the physical size and weight of the Canon 1D Mark III and the Pentax K-3 II is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.

The K-3 II can be obtained in two different colors (black, silver), while the 1D Mark III is only available in black.

Size Canon 1D Mark III vs Pentax K-3 II
Compare 1D Mark III versus K-3 II top
Comparison 1D Mark III or K-3 II 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 II is considerably smaller (47 percent) than the Canon 1D Mark III. Moreover, the K-3 II is markedly lighter (31 percent) than the 1D 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 1D Mark III gets 2200 shots out of its LP-E4 battery, while the K-3 II can take 720 images on a single charge of its D-LI90 power pack. As can be seen in the images above, the 1D 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-3 II, Pentax provides the D-BG5 vertical grip as an optional accessory (see here on eBay).

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 1D Mark III 156 mm 157 mm 80 mm 1155 g 2200 Y Feb 2007 4,499i
2.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099i
3.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
4.
 
Canon 5D Mark III 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499i
5.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 4,999i
6.
 
Canon 5D Mark II 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 3,499i
7.
 
Canon 1Ds Mark III 150 mm 160 mm 80 mm 1385 g 1800 Y Aug 2007 7,999i
8.
 
Canon 1D Mark II 156 mm 158 mm 80 mm 1535 g 1200 Y Jan 2004 4,499i
9.
 
Canon 1Ds 156 mm 158 mm 80 mm 1265 g 600 Y Sep 2002 8,999i
10.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199i
11.
 
Nikon D3 160 mm 157 mm 88 mm 1300 g 4300 Y Aug 2007 4,999i
12.
 
Nikon D2Xs 158 mm 150 mm 86 mm 1252 g 3800 Y Jun 2006 4,699i
13.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 1,999 i
14.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099 i
15.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 i
16.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
17.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099i
Notes: 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 K-3 II was launched at a markedly lower price (by 76 percent) than the 1D Mark III, which puts it into a different market segment. 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.

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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 1D Mark III features an APS-H sensor and the Pentax K-3 II an APS-C sensor. The sensor area in the K-3 II is 30 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 1D Mark III and Pentax K-3 II sensor measures

Despite having a smaller sensor, the K-3 II offers a higher resolution of 24.1 megapixels, compared with 10.1 MP of the 1D 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 3.90μm versus 7.21μm for the 1D Mark III). However, it should be noted that the K-3 II is much more recent (by 8 years and 2 months) than the 1D Mark III, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the K-3 II 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 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 II for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 cm. The corresponding values for the Canon 1D Mark III are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches or 32.9 x 21.9 cm for excellent quality prints.

Unlike the 1D Mark III, the K-3 II 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 Mark III has a native sensitivity range from ISO 100 to ISO 3200, which can be extended to ISO 50-6400. The corresponding ISO settings for the Pentax K-3 II are ISO 100 to ISO 51200 (no boost).

1D Mark III versus K-3 II MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under consideration, the K-3 II has a markedly higher DXO score than the 1D Mark III (overall score 9 points higher), which will translate into better image quality. The advantage is based on 0.9 bits higher color depth, 1.9 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
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 1D Mark III APS-H 10.1 3888 2592none22.711.7107871
2.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
3.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
4.
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381
5.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
6.
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579
7.
 
Canon 1Ds Mark III Full Frame 21.0 5616 3744none24.012.0166380
8.
 
Canon 1D Mark II APS-H 8.2 3504 2336none22.311.1100366
9.
 
Canon 1Ds Full Frame 11.0 4064 2704none21.811.095463
10.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
11.
 
Nikon D3 Full Frame 12.1 4256 2832none23.512.2229081
12.
 
Nikon D2Xs APS-C 12.2 4288 2848none22.210.948959
13.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p24.213.7208385
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 APS-C 24.1 6016 40001080/60i23.713.4121680
17.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The K-3 II indeed provides for movie recording, while the 1D Mark III does not. The highest resolution format that the K-3 II can use is 1080/60i.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 1D Mark III and the K-3 II 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 K-3 II has a higher magnification than the one of the 1D Mark III (0.63x vs 0.58x), 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 Mark III and Pentax K-3 II 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)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon 1D Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 10.0 n n
2.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3 n Y
3.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0 n n
4.
 
Canon 5D Mark IIIoptical Y3.2 / 1040 fixed n 1/8000s 6.0 n n
5.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0 n n
6.
 
Canon 5D Mark IIoptical Y3.0 / 920 fixed n 1/8000s 3.9 n n
7.
 
Canon 1Ds Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 5.0 n n
8.
 
Canon 1D Mark IIoptical Y2.0 / 230 fixed n 1/8000s 8.3 n n
9.
 
Canon 1Dsoptical Y2.0 / 120 fixed n 1/8000s 3.0 n n
10.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0 n n
11.
 
Nikon D3optical Y3.0 / 922 fixed n 1/8000s 11.0 n n
12.
 
Nikon D2Xsoptical Y2.5 / 230 fixed n 1/8000s 5.0 n n
13.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0 n Y
14.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0 Y Y
15.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0 Y Y
16.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3 Y Y
17.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0 Y Y

One feature that differentiates the K-3 II and the 1D Mark III is in-body image stabilization (IBIS). The K-3 II reduces the risk of handshake-induced blur with all attached lenses, while the 1D Mark III offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The Pentax K-3 II 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.

The 1D Mark III writes its imaging data to Compact Flash or SDHC cards, while the K-3 II uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The K-3 II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the 1D Mark III 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 Canon EOS-1D Mark III and Pentax K-3 II 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 1D Mark IIIY- / ----2.0---
2.
 
Pentax K-3 IIYmono / monoYYmini3.0---
3.
 
Canon 5DS RYmono / monoY-mini3.0---
4.
 
Canon 5D Mark IIIYmono / monoYYmini2.0---
5.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
6.
 
Canon 5D Mark IIYmono / monoY-mini2.0---
7.
 
Canon 1Ds Mark IIIYmono / ----2.0---
8.
 
Canon 1D Mark IIY- / ----1.1---
9.
 
Canon 1DsY- / ----FW---
10.
 
Nikon D3SYstereo / ---mini2.0---
11.
 
Nikon D3Y- / ---mini2.0---
12.
 
Nikon D2XsY- / ----2.0---
13.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
14.
 
Pentax KPYstereo / monoY--2.0Y--
15.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
16.
 
Pentax K-3Ymono / monoYYmini3.0---
17.
 
Pentax K-5Ystereo / monoY-mini2.0---

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 the K-3 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the 1D Mark III and the K-3 II have been discontinued, but can regularly be found used on eBay. The 1D Mark III was replaced by the Canon 1D Mark IV, while the K-3 II was followed by the Pentax K-3 III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Pentax websites.

Review summary

So what conclusions can be drawn? Is the Canon 1D Mark III better than the Pentax K-3 II or vice versa? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Canon EOS-1D Mark III:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Faster burst: Shoots at higher frequency (10 vs 8.3 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 (2200 versus 720) on a single battery charge.
  • More heavily discounted: Has been available for much longer (launched in February 2007).

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Advantages of the Pentax K-3 II:

  • More detail: Has more megapixels (24.1 vs 10.1MP), which boosts linear resolution by 55%.
  • 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 (9 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1.9 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 1080/60i video.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.63x vs 0.58x).
  • 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 (1037k vs 230k dots).
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (131x100mm vs 156x157mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 355g or 31 percent) and is thus easier to take along.
  • 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 (3.0 vs 2.0).
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More affordable: Was introduced into a lower priced category (76 percent cheaper at launch).
  • More modern: Reflects 8 years and 2 months of technical progress since the 1D Mark III launch.

If the count of relative strengths (bullet points above) is taken as a measure, the K-3 II is the clear winner of the contest (18 : 5 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 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.

1D Mark III 05:18 K-3 II

How about other alternatives? Do the specifications of the Canon 1D Mark III and the Pentax K-3 II 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 1D Mark III or the K-3 II. 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 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 1D Mark III............ Feb 2007 4,499i
2.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099i
3.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699 i
4.
 
Canon 5D Mark III..+ +..82/1004.5/54.5/5 Mar 2012 3,499i
5.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 4,999i
6.
 
Canon 5D Mark II4/591/100..79/1004/5.. Sep 2008 3,499i
7.
 
Canon 1Ds Mark III......+ +4.5/5.. Aug 2007 7,999i
8.
 
Canon 1D Mark II......+ +.... Jan 2004 4,499i
9.
 
Canon 1Ds......+ +.... Sep 2002 8,999i
10.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 5,199i
11.
 
Nikon D3......+ +5/54.5/5 Aug 2007 4,999i
12.
 
Nikon D2Xs............ Jun 2006 4,699i
13.
 
Pentax K-3 III4/5..3/5..4.5/5.. Mar 2021 1,999 i
14.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099 i
15.
 
Pentax K-704.5/5....79/1004.5/54.5/5 Jun 2016 649 i
16.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299i
17.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099i
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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

Canon 1D Mark III:
Check Ebay offers
Pentax K-3 II:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes 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: Canon 1D Mark III vs Pentax K-3 II

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Canon 1D Mark III Pentax K-3 II
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Pentax K mount lenses
    Launch Date February 2007 April 2015
    Launch Price USD 4,499 USD 1,099
    Sensor Specs Canon 1D Mark III Pentax K-3 II
    Sensor Technology CMOS CMOS
    Sensor Format APS-H Sensor APS-C Sensor
    Sensor Size 28.1 x 18.7 mm 23.5 x 15.6 mm
    Sensor Area 525.47 mm2 366.6 mm2
    Sensor Diagonal 33.8 mm 28.2 mm
    Crop Factor 1.3x 1.5x
    Sensor Resolution 10.1 Megapixels 24.1 Megapixels
    Image Resolution 3888 x 2592 pixels 6016 x 4000 pixels
    Pixel Pitch 7.21 μm 3.90 μm
    Pixel Density 1.92 MP/cm2 6.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100 - 3,200 ISO 100 - 51,200 ISO
    ISO Boost 50 - 6,400 ISO no Enhancement
    Image Processor DIGIC III PRIME III
    DXO Sensor Quality (score) 71 80
    DXO Color Depth (bits) 22.7 23.6
    DXO Dynamic Range (EV) 11.7 13.6
    DXO Low Light (ISO) 1078 1106
    Screen Specs Canon 1D Mark III Pentax K-3 II
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.58x 0.63x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 230k dots 1037k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Canon 1D Mark III Pentax K-3 II
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 10 shutter flaps/s 8.3 shutter flaps/s
    Shutter Life Expectancy300 000 actuations200 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF or SDHC cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    UHS card support no UHS-I
    Connectivity Specs Canon 1D Mark III Pentax K-3 II
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi no Wifi
    Geotagging no internal GPS GPS built-in
    Body Specs Canon 1D Mark III Pentax K-3 II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type LP-E4 D-LI90
    Battery Life (CIPA)2200 shots per charge720 shots per charge
    Body Dimensions 156 x 157 x 80 mm
    (6.1 x 6.2 x 3.1 in)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 1155 g (40.7 oz) 800 g (28.2 oz)

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