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Leica S3 vs Pentax 645Z

The Leica S3 and the Pentax 645Z are two professional cameras that were revealed to the public, respectively, in September 2018 and April 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with a medium format sensor. The Leica has a resolution of 64 megapixels, whereas the Pentax provides 51.1 MP.

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

Headline Specifications
Leica S3
versus
Pentax 645Z
Leica S3   Pentax 645Z
Digital single lens reflex Digital single lens reflex
Leica S mount lenses Pentax 645 mount lenses
64 MP – Medium Format sensor 51.1 MP – Medium Format sensor
4K/24p Video 1080/60i Video
ISO 100-50,000 ISO 100-204,800
Optical viewfinder Optical viewfinder
3.0" LCD – 922k dots 3.2" LCD – 1037k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
3 shutter flaps per second 3 shutter flaps per second
Weathersealed bodyWeathersealed body
160 x 120 x 80 mm, 1260 g 156 x 117 x 123 mm, 1550 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Leica S3 and the Pentax 645Z? 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

The physical size and weight of the Leica S3 and the Pentax 645Z are illustrated 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 width, height and depth dimensions are rounded to the nearest millimeter.

Size Leica S3 vs Pentax 645Z
Compare S3 versus 645Z top
Comparison S3 or 645Z rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645Z is notably smaller (5 percent) than the Leica S3. However, the 645Z is markedly heavier (23 percent) than the S3. 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 S3 gets .. shots out of its Leica BP-PRO1 battery, while the 645Z can take 650 images on a single charge of its Pentax D-LI90 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Leica S3 160 mm 120 mm 80 mm 1260 g .. Y Sep 2018 US$ 18 999ebay.com
2.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 US$ 8 499ebay.com
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 US$ 3 699ebay.com
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 US$ 3 699ebay.com
5.
 
Hasselblad X1D 150 mm 98 mm 71 mm 725 g .. Y Jun 2016 US$ 8 995ebay.com
6.
 
Leica M-E Typ 240 139 mm 80 mm 42 mm 680 g 500 Y Jun 2019 US$ 3 999ebay.com
7.
 
Leica M10 139 mm 80 mm 39 mm 660 g 210 Y Jan 2017 US$ 6 599ebay.com
8.
 
Leica M10-P 139 mm 80 mm 39 mm 660 g 210 Y Aug 2018 US$ 7 999ebay.com
9.
 
Leica Q2 130 mm 80 mm 92 mm 718 g 370 Y Mar 2019 US$ 4 999 amazon.com
10.
 
Leica S2 160 mm 120 mm 80 mm 1410 g .. Y Sep 2008 US$ 22 999ebay.com
11.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 US$ 21 949ebay.com
12.
 
Leica S-E Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2014 US$ 16 599ebay.com
13.
 
Leica S Typ 007 160 mm 120 mm 80 mm 1260 g .. Y Sep 2014 US$ 24 499ebay.com
14.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 US$ 7 449ebay.com
15.
 
Nikon D6 160 mm 163 mm 92 mm 1270 g 3580 Y Feb 2020 US$ 6 499 amazon.com
16.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 US$ 9 995ebay.com
17.
 
Sony RX10 IV 133 mm 94 mm 145 mm 1095 g 400 Y Sep 2017 US$ 1 699 amazon.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 645Z was launched at a markedly lower price (by 55 percent) than the S3, 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 associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature a medium format sensor, but their sensors differ slightly in size. The sensor area in the 645Z is 6 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 0.8 (S3) and 0.79. The sensor in the S3 has a native 3:2 aspect ratio, while the one in the 645Z offers a 4:3 aspect.

Leica S3 and Pentax 645Z sensor measures

Despite having a smaller sensor, the Leica S3 offers a higher resolution of 64 megapixels, compared with 51.1 MP of the Pentax 645Z. 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 4.59μm versus 5.30μm for the 645Z). However, it should be noted that the S3 is much more recent (by 4 years and 5 months) than the 645Z, 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Leica S3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S3 for good quality output (200 dots per inch) amounts to 49 x 32.7 inches or 124.5 x 83 cm, for very good quality (250 dpi) 39.2 x 26.1 inches or 99.6 x 66.4 cm, and for excellent quality (300 dpi) 32.7 x 21.8 inches or 83 x 55.3 cm. The corresponding values for the Pentax 645Z are 41.3 x 31 inches or 104.9 x 78.6 cm for good quality, 33 x 24.8 inches or 83.9 x 62.9 cm for very good quality, and 27.5 x 20.6 inches or 69.9 x 52.4 cm for excellent quality prints.

The Leica S3 has a native sensitivity range from ISO 100 to ISO 50000. The corresponding ISO settings for the Pentax 645Z 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.

S3 versus 645Z 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"). 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
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Leica S3 Medium Format 64.0 9800 65334K/24p25.614.4314398
2.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
3.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
4.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
5.
 
Hasselblad X1D Medium Format 51.3 8272 62001080/25p26.214.84489102
6.
 
Leica M-E Typ 240 Full Frame 23.7 5952 39761080/25p25.214.2282194
7.
 
Leica M10 Full Frame 23.8 5952 3992none24.413.2213386
8.
 
Leica M10-P Full Frame 23.8 5952 3992none25.114.1273993
9.
 
Leica Q2 Full Frame 46.7 8368 55844K/30p26.413.5249196
10.
 
Leica S2 Medium Format 37.5 7500 5000none23.912.5222482
11.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
12.
 
Leica S-E Typ 006 Medium Format 37.5 7500 5000none25.113.7276393
13.
 
Leica S Typ 007 Medium Format 37.5 7500 50004K/24p25.113.7276393
14.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
15.
 
Nikon D6 Full Frame 20.7 5568 37124K/30p25.314.3288695
16.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
17.
 
Sony RX10 IV 1-inch 20.0 5472 36484K/30p22.012.240863
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 S3 provides a higher video resolution than the 645Z. It can shoot video footage at 4K/24p, while the Pentax is limited to 1080/60i.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The S3 and the 645Z 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 (98%), but the viewfinder of the S3 has a higher magnification than the one of the 645Z (0.87x vs 0.78x), 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 Leica S3 and Pentax 645Z along with similar information for a selection of comparators.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Leica S3optical Y3.0 / 922 fixed n 1/4000s 3.0/s n n
2.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
3.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
5.
 
Hasselblad X1D2360 n3.0 / 920 fixed Y 1/2000s 2.3/s n n
6.
 
Leica M-E Typ 240optical n3.0 / 920 fixed n 1/4000s 3.0/s n n
7.
 
Leica M10optical n3.0 / 1037 fixed n 1/4000s 5.0/s n n
8.
 
Leica M10-Poptical n3.0 / 1037 fixed Y 1/4000s 5.0/s n n
9.
 
Leica Q23680 n3.0 / 1040 fixed Y 1/2000s 10.0/s n Y
10.
 
Leica S2optical Y3.0 / 460 fixed n 1/4000s 1.5/s n n
11.
 
Leica S Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
12.
 
Leica S-E Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
13.
 
Leica S Typ 007optical Y3.0 / 922 fixed n 1/4000s 3.5/s n n
14.
 
Leica SL4400 Y3.0 / 1040 fixed Y 1/8000s 11.0/s n n
15.
 
Nikon D6optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
16.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
17.
 
Sony RX10 IV2359 Y3.0 / 1440 tilting Y 1/2000s 24.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

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 S3 writes its imaging data to Compact Flash or SDXC cards, while the 645Z uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The S3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the 645Z can use UHS-I cards (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 Leica S3 and Pentax 645Z and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Leica S3Ystereo / monoYYmini3.0Y--
2.
 
Pentax 645ZYstereo / monoY-mini3.0---
3.
 
Canon 5DSYmono / monoY-mini3.0---
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Hasselblad X1DYstereo / monoYYmini3.0Y--
6.
 
Leica M-E Typ 240Ymono / ----2.0---
7.
 
Leica M10Y- / -----Y--
8.
 
Leica M10-PY- / -----Y--
9.
 
Leica Q2Ystereo / mono----Y-Y
10.
 
Leica S2Y- / ---mini2.0---
11.
 
Leica S Typ 006Y- / ---mini2.0---
12.
 
Leica S-E Typ 006Y- / ---mini2.0---
13.
 
Leica S Typ 007Ystereo / monoYYmini3.0Y--
14.
 
Leica SLYstereo / monoYYfull3.0Y--
15.
 
Nikon D6Ystereo / monoYYmini3.1Y-Y
16.
 
Pentax 645DYstereo / ----2.0---
17.
 
Sony RX10 IVYstereo / monoYYmicro2.0YY-

It is notable that the S3 has a headphone jack, which is not present on the 645Z This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.

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 S3 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the S3 and the 645Z have been discontinued, but can regularly be found used on ebay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Leica and Pentax. Further information on the features and operation of the S3 and 645Z can be found, respectively, in the Leica S3 Manual (free pdf) or the online Pentax 645Z Manual.

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Review summary

So what conclusions can be drawn? Is the Leica S3 better than the Pentax 645Z 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 Leica S3:

  • More detail: Offers more megapixels (64 vs 51.1MP) with a 14% higher linear resolution.
  • Better video: Provides higher definition movie capture (4K/24p vs 1080/60i).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.87x vs 0.78x).
  • Less heavy: Is lighter (by 290g or 19 percent) and hence easier to carry around.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
  • More modern: Reflects 4 years and 5 months of technical progress since the 645Z launch.

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Arguments in favor of the Pentax 645Z:

  • 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 922k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More affordable: Was introduced into a lower priced category (55 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in April 2014).

If the count of relative strengths (bullet points above) is taken as a measure, the S3 is the clear winner of the match-up (10 : 6 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.

S3 10:06 645Z

How about other alternatives? Do the specifications of the Leica S3 and the Pentax 645Z 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 S3 or the 645Z perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Leica S3............ Sep 2018 US$ 18 999ebay.com
2.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 US$ 8 499ebay.com
3.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 US$ 3 699ebay.com
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 US$ 3 699ebay.com
5.
 
Hasselblad X1D..o..81/100..4/5 Jun 2016 US$ 8 995ebay.com
6.
 
Leica M-E Typ 240............ Jun 2019 US$ 3 999ebay.com
7.
 
Leica M104.5/5......4/54.5/5 Jan 2017 US$ 6 599ebay.com
8.
 
Leica M10-P....3/5....4/5 Aug 2018 US$ 7 999ebay.com
9.
 
Leica Q2....4.5/584/1004.5/54/5 Mar 2019 US$ 4 999 amazon.com
10.
 
Leica S2............ Sep 2008 US$ 22 999ebay.com
11.
 
Leica S Typ 006............ Sep 2012 US$ 21 949ebay.com
12.
 
Leica S-E Typ 006............ Sep 2014 US$ 16 599ebay.com
13.
 
Leica S Typ 0074/5.......... Sep 2014 US$ 24 499ebay.com
14.
 
Leica SL4/5..4/584/1004.5/54/5 Oct 2015 US$ 7 449ebay.com
15.
 
Nikon D6....4/5..4.5/54.5/5 Feb 2020 US$ 6 499 amazon.com
16.
 
Pentax 645D5/5.......... Mar 2010 US$ 9 995ebay.com
17.
 
Sony RX10 IV5/5+3.5/584/1004.5/55/5 Sep 2017 US$ 1 699 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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: Leica S3 vs Pentax 645Z

    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 Leica S3 Pentax 645Z
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Leica S mount lenses Pentax 645 mount lenses
    Launch Date September 2018 April 2014
    Launch Price USD 18,999 USD 8,499
    Sensor Specs Leica S3 Pentax 645Z
    Sensor Technology CMOS CMOS
    Sensor Format Medium Format Sensor Medium Format Sensor
    Sensor Size 45.0 x 30.0 mm 43.8 x 32.8 mm
    Sensor Area 1350 mm2 1436.64 mm2
    Sensor Diagonal 54.1 mm 54.7 mm
    Crop Factor 0.8x 0.79x
    Sensor Resolution 64 Megapixels 51.1 Megapixels
    Image Resolution 9800 x 6533 pixels 8256 x 6192 pixels
    Pixel Pitch 4.59 μm 5.30 μm
    Pixel Density 4.74 MP/cm2 3.56 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/24p Video 1080/60i Video
    ISO Setting 100 - 50,000 ISO 100 - 204,800 ISO
    Image Processor Maestro II PRIME III
    DXO Sensor Quality (score) .. 101
    DXO Color Depth (bits) .. 26.0
    DXO Dynamic Range (EV) .. 14.7
    DXO Low Light (ISO) .. 4505
    Screen Specs Leica S3 Pentax 645Z
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 98% 98%
    Viewfinder Magnification 0.87x 0.78x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 922k dots 1037k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Leica S3 Pentax 645Z
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 3 shutter flaps/s 3 shutter flaps/s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF or SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Dual card slots
    UHS card support UHS-II UHS-I
    Connectivity Specs Leica S3 Pentax 645Z
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.0 USB 3.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Geotagging GPS built-in no internal GPS
    Body Specs Leica S3 Pentax 645Z
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Leica BP-PRO1 Pentax D-LI90
    Body Dimensions 160 x 120 x 80 mm
    (6.3 x 4.7 x 3.1 in)
    156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    Camera Weight 1260 g (44.4 oz) 1550 g (54.7 oz)
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