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Pentax 645Z vs Sony RX10

The Pentax 645Z and the Sony Cyber-shot DSC-RX10 are two digital cameras that were officially introduced, respectively, in April 2014 and October 2013. The 645Z is a DSLR, while the RX10 is a fixed lens compact. The cameras are based on a medium format (645Z) and an one-inch (RX10) sensor. The Pentax has a resolution of 51.1 megapixels, whereas the Sony provides 20 MP.

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

Headline Specifications
Pentax 645Z versus Sony RX10
Pentax 645Z Sony RX10
Digital single lens reflex Fixed lens compact camera
Pentax 645 mount lenses 24-200mm f/2.8
51.1 MP, Medium Format Sensor 20 MP, 1" Sensor
1080/60i Video 1080/60p Video
ISO 100-204,800 ISO 125-12,800 (80 - 25,600)
Optical viewfinder Electronic viewfinder (1440k dots)
3.2 LCD, 1037k dots 3.0 LCD, 1229k dots
Tilting screen (no touchscreen) Tilting screen (not touch-sensitive)
3 shutter flaps per second 10 shutter flaps per second
Weathersealed bodyWeathersealed body
650 shots per battery charge420 shots per battery charge
156 x 117 x 123 mm, 1550 g 129 x 88 x 102 mm, 813 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645Z and the Sony Cyber-shot DSC-RX10? 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 side-by-side display below illustrates the physical size and weight of the Pentax 645Z and the Sony RX10. 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.

Size Pentax 645Z vs Sony RX10
Compare 645Z versus RX10 top
Comparison 645Z or RX10 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX10 is considerably smaller (38 percent) than the Pentax 645Z. 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 and possibly misleading, as the RX10 has a lens built in, whereas the 645Z 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 645Z gets 650 shots out of its D-LI90 battery, while the RX10 can take 420 images on a single charge of its NP-FW50 power pack. The power pack in the RX10 can be charged via the USB port, which can be very convenient when travelling.

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.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 i
2.
 
Sony RX10 129 mm 88 mm 102 mm 813 g 420 Y Oct 2013 1,299i
3.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999i
4.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
5.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
6.
 
Canon G3 X 123 mm 77 mm 105 mm 733 g 300 Y Jun 2015 999 i
7.
 
Canon 70D 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199i
8.
 
Hasselblad X1D 150 mm 98 mm 71 mm 725 g .. Y Jun 2016 8,995i
9.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450i
10.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 i
11.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499i
12.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 Y Mar 2015 1,199i
13.
 
Nikon D4S 160 mm 157 mm 91 mm 1350 g 3020 Y Feb 2014 6,499i
14.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199i
15.
 
Panasonic FZ1000 137 mm 99 mm 131 mm 831 g 360 n Jun 2014 899i
16.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995i
17.
 
Sony RX10 II 129 mm 88 mm 102 mm 813 g 400 Y Jun 2015 1,299i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. 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 RX10 was launched at a lower price than the 645Z, 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.

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Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Pentax 645Z features a medium format sensor and the Sony RX10 an one-inch sensor. The sensor area in the RX10 is 92 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 2.7. The sensor in the 645Z has a native 4:3 aspect ratio, while the one in the RX10 offers a 3:2 aspect.

Pentax 645Z and Sony RX10 sensor measures

With 51.1MP, the 645Z offers a higher resolution than the RX10 (20MP), but the 645Z nevertheless has larger individual pixels (pixel pitch of 5.30μm versus 2.41μm for the RX10) due to its larger sensor. Moreover, the 645Z is a somewhat more recent model (by 5 months) than the RX10, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the 645Z has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax 645Z implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645Z for good quality output (200 dots per inch) amounts to 41.3 x 31 inches or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inches or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inches or 69.9 x 52.4 cm. The corresponding values for the Sony RX10 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 Pentax 645Z has a native sensitivity range from ISO 100 to ISO 204800. The corresponding ISO settings for the Sony Cyber-shot DSC-RX10 are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 80-25600.

645Z versus RX10 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 review, the 645Z provides substantially higher image quality than the RX10, with an overall score that is 32 points higher. This advantage is based on 3.1 bits higher color depth, 2.1 EV in additional dynamic range, and 3.2 stops in additional low light sensitivity. 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.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
2.
 
Sony RX10 1-inch 20.0 5472 36481080/60p22.912.647469
3.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
4.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
5.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
6.
 
Canon G3 X 1-inch 20.0 5472 36481080/60p21.412.352163
7.
 
Canon 70D APS-C 20.0 5472 36481080/30p22.511.692668
8.
 
Hasselblad X1D Medium Format 51.3 8272 62001080/25p26.214.84489102
9.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
10.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
11.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
12.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
13.
 
Nikon D4S Full Frame 16.2 4928 32801080/60p24.413.3307489
14.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
15.
 
Panasonic FZ1000 1-inch 20.0 5472 36484K/30p22.111.751764
16.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
17.
 
Sony RX10 II 1-inch 20.0 5472 36484K/30p23.012.653170

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the RX10 provides a faster frame rate than the 645Z. It can shoot movie footage at 1080/60p, 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 variety of features. For example, the RX10 has an electronic viewfinder (1440k dots), while the 645Z has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinder in the RX10 offers a wider field of view (100%) than the one in the 645Z (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645Z has a higher magnification (0.78x 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 Pentax 645Z and Sony RX10 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
Size
(inch)
LCD
Resolution
(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.
 
Pentax 645Zoptical Y 3.2 1037 tilting n 1/4000s 3.0 n n
2.
 
Sony RX101440 Y 3.0 1229 tilting n 1/3200s 10.0 Y Y
3.
 
Canon 1D X Mark IIoptical Y 3.2 1620 fixed Y 1/8000s 16.0 n n
4.
 
Canon 5DSoptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
5.
 
Canon 5DS Roptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
6.
 
Canon G3 Xoptional n 3.2 1620 tilting Y 1/2000s 5.9 Y Y
7.
 
Canon 70Doptical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n
8.
 
Hasselblad X1D2360 n 3.0 920 fixed Y 1/2000s 2.3 n n
9.
 
Leica SL4400 Y 3.0 1040 fixed Y 1/8000s 11.0 n n
10.
 
Nikon D850optical Y 3.2 2359 tilting Y 1/8000s 9.0 n n
11.
 
Nikon D5optical Y 3.2 2359 fixed Y 1/8000s 14.0 n n
12.
 
Nikon D7200optical Y 3.2 1229 fixed n 1/8000s 6.0 Y n
13.
 
Nikon D4Soptical Y 3.2 921 fixed n 1/8000s 11.0 n n
14.
 
Nikon D7100optical Y 3.2 1229 fixed n 1/8000s 6.0 Y n
15.
 
Panasonic FZ10002359 n 3.0 921 swivel n 1/4000s 12.0 Y Y
16.
 
Pentax 645Doptical Y 3.0 921 fixed n 1/4000s 1.1 n n
17.
 
Sony RX10 II2359 Y 3.0 1229 tilting n 1/3200s 14.0 Y Y

One difference between the cameras concerns the presence of an on-board flash. The RX10 has one, while the 645Z does not. While the built-in flash of the RX10 is not very powerful, it can at times be useful as a fill-in light.

The Pentax 645Z 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 645Z writes its imaging data to SDXC cards, while the RX10 uses SDXC or Memory Stick PRO Duo cards. The 645Z features dual card slots, which can be very useful in case a memory card fails. In contrast, the RX10 only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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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 Pentax 645Z and Sony Cyber-shot DSC-RX10 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
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Pentax 645ZYstereomonoY-mini3.0---
2.
 
Sony RX10YstereomonoYYmicro2.0YY-
3.
 
Canon 1D X Mark IIYmonomonoYYmini3.0---
4.
 
Canon 5DSYmonomonoY-mini3.0---
5.
 
Canon 5DS RYmonomonoY-mini3.0---
6.
 
Canon G3 XYstereomonoYYmini2.0YY-
7.
 
Canon 70DYstereomonoY-mini2.0Y--
8.
 
Hasselblad X1DYstereomonoYYmini3.0Y--
9.
 
Leica SLYstereomonoYYfull3.0Y--
10.
 
Nikon D850YstereomonoYYmini3.0YYY
11.
 
Nikon D5YstereomonoYYmini3.0---
12.
 
Nikon D7200YstereomonoYYmini2.0YY-
13.
 
Nikon D4SYmonomonoYYmini2.0---
14.
 
Nikon D7100YstereomonoYYmini2.0---
15.
 
Panasonic FZ1000YstereomonoY-micro2.0YY-
16.
 
Pentax 645DYstereo----2.0---
17.
 
Sony RX10 IIYstereomonoYYmicro2.0YY-

It is notable that the RX10 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 645Z does not provide wifi capability.

Studio photographers will appreciate that the Pentax 645Z (unlike the RX10) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The 645Z is a recent model that features in the current product line-up of Pentax. In contrast, the RX10 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX10 was succeeded by the Sony RX10 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Sony websites.

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Review summary

So what conclusions can be drawn? Is there a clear favorite between the Pentax 645Z and the Sony RX10? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Pentax 645Z:

  • More detail: Offers more megapixels (51.1 vs 20MP) with a 57% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (32 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (3.1 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (2.1 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (3.2 stops ISO advantage).
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.70x).
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/3200s) to freeze action.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (650 versus 420) on a single battery charge.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • 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.
  • More modern: Is somewhat more recent (announced 5 months after the RX10).

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Arguments in favor of the Sony Cyber-shot DSC-RX10:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1037k dots).
  • Faster burst: Shoots at higher frequency (10 vs 3 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Comes with an integrated lens, while the 645Z requires a separate lens.
  • More compact: Is smaller (129x88mm vs 156x117mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the 645Z).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More heavily discounted: Has been on the market for longer (launched in October 2013).

If the number of relative strengths (bullet points above) is taken as a guide, the match-up finishes in a tie (17 points each). 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.

645Z 17:17 RX10

How about other alternatives? Do the specifications of the Pentax 645Z and the Sony RX10 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of 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 645Z or the RX10. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], 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 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax 645Z5/5....4.5/55/5 Apr 2014 8,499 i
2.
 
Sony RX105/5+80/1004.5/54.5/5 Oct 2013 1,299i
3.
 
Canon 1D X Mark II....89/1004.5/54.5/5 Feb 2016 5,999i
4.
 
Canon 5DS..+83/1004.5/54.5/5 Feb 2015 3,699 i
5.
 
Canon 5DS R5/5+83/1005/54.5/5 Feb 2015 3,699 i
6.
 
Canon G3 X3.5/5+..4.5/54/5 Jun 2015 999 i
7.
 
Canon 70D5/5+ +83/1004.5/55/5 Jul 2013 1,199i
8.
 
Hasselblad X1D..o81/100..4/5 Jun 2016 8,995i
9.
 
Leica SL4/5..84/1004.5/54/5 Oct 2015 7,450i
10.
 
Nikon D8504.5/5+ +89/1004.5/55/5 Jul 2017 3,299 i
11.
 
Nikon D5....89/1004.5/55/5 Jan 2016 6,499i
12.
 
Nikon D72004/5+ +84/1004.5/54.5/5 Mar 2015 1,199i
13.
 
Nikon D4S5/5....4.5/54.5/5 Feb 2014 6,499i
14.
 
Nikon D71005/5+ +85/1004.5/54.5/5 Feb 2013 1,199i
15.
 
Panasonic FZ10004/5+ +82/1004.5/54.5/5 Jun 2014 899i
16.
 
Pentax 645D5/5........ Mar 2010 9,995i
17.
 
Sony RX10 II5/5+ +82/1004.5/54/5 Jun 2015 1,299i
Notes: (+ +) 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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

Pentax 645Z:
Check Amazon price
Sony RX10:
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 your choice using the following search menu. 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: Pentax 645Z vs Sony RX10

    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 Pentax 645Z Sony RX10
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Pentax 645 mount lenses 24-200mm f/2.8
    Launch Date April 2014 October 2013
    Launch Price USD 8,499 USD 1,299
    Sensor Specs Pentax 645Z Sony RX10
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Medium Format Sensor 1" Sensor
    Sensor Size 43.8 x 32.8 mm 13.2 x 8.8 mm
    Sensor Area 1436.64 mm2 116.16 mm2
    Sensor Diagonal 54.7 mm 15.9 mm
    Crop Factor 0.79x 2.7x
    Sensor Resolution 51.1 Megapixels 20 Megapixels
    Image Resolution 8256 x 6192 pixels 5472 x 3648 pixels
    Pixel Pitch 5.30 μm 2.41 μm
    Pixel Density 3.56 MP/cm2 17.18 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/60i Video 1080/60p Video
    ISO Setting 100 - 204,800 ISO 125 - 12,800 ISO
    ISO Boost no Enhancement 80 - 25,600 ISO
    Image Processor PRIME III BIONZ X
    DXO Sensor Quality (score) 101 69
    DXO Color Depth (bits) 26.0 22.9
    DXO Dynamic Range (EV) 14.7 12.6
    DXO Low Light (ISO) 4505 474
    Screen Specs Pentax 645Z Sony RX10
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 98% 100%
    Viewfinder Magnification 0.78x 0.70x
    Viewfinder Resolution 1440k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1037k dots 1229k dots
    LCD Attachment Tilting screen Tilting screen
    Shooting Specs Pentax 645Z Sony RX10
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/3200s
    Continuous Shooting 3 shutter flaps/s 10 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Pentax 645Z Sony RX10
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    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
    Near-Field Communication no NFC NFC built-in
    Body Specs Pentax 645Z Sony RX10
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type D-LI90 NP-FW50
    Battery Life (CIPA)650 shots per charge420 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    129 x 88 x 102 mm
    (5.1 x 3.5 x 4.0 in)
    Camera Weight 1550 g (54.7 oz) 813 g (28.7 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

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    Once again, thanks for taking the time to provide feedback. I appreciate it.