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Panasonic S1 vs Pentax 645Z

The Panasonic Lumix DC-S1 and the Pentax 645Z are two digital cameras that were officially introduced, respectively, in February 2019 and April 2014. The S1 is a mirrorless interchangeable lens camera, while the 645Z is a DSLR. The cameras are based on a full frame (S1) and a medium format (645Z) sensor. The Panasonic has a resolution of 24 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
Panasonic S1   Pentax 645Z
Panasonic S1 Pentax 645Z
Mirrorless system camera Digital single lens reflex
Leica L mount lenses Pentax 645 mount lenses
24 MP, Full Frame Sensor 51.1 MP, Medium Format Sensor
4K/60p Video 1080/60i Video
ISO 100-51200 (50-204800) ISO 100-204800
Electronic viewfinder (5760k dots) Optical viewfinder
3.2" LCD, 2100k dots 3.2" LCD, 1037k dots
Fully flexible touchscreen Tilting screen (not touch-sensitive)
9 shutter flaps per second 3 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
400 shots per battery charge650 shots per battery charge
149 x 110 x 97 mm, 1017 g 156 x 117 x 123 mm, 1550 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DC-S1 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.

Body comparison: Panasonic S1 vs Pentax 645Z

The side-by-side display below illustrates the physical size and weight of the Panasonic S1 and the Pentax 645Z. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter.

Size Panasonic S1 vs Pentax 645Z
Compare S1 versus 645Z top
Comparison S1 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 larger (11 percent) than the Panasonic S1. Moreover, the 645Z is substantially heavier (52 percent) than the S1. 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 S1 gets 400 shots out of its DMW-BLJ31 battery, while the 645Z can take 650 images on a single charge of its D-LI90 power pack. The power pack in the S1 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Panasonic S1» 5.9 in 4.3 in 3.8 in 35.9 oz 400 Y Feb 2019 2,499 i i Panasonic S1
 
Pentax 645Z« 6.1 in 4.6 in 4.8 in 54.7 oz 650 Y Apr 2014 8,499 i i Pentax 645Z
 
Canon 5DS« » 6.0 in 4.6 in 3.0 in 32.8 oz 700 Y Feb 2015 3,699 i i Canon 5DS
 
Canon 5DS R« » 6.0 in 4.6 in 3.0 in 32.8 oz 700 Y Feb 2015 3,699 i i Canon 5DS R
 
Hasselblad X1D« » 5.9 in 3.9 in 2.8 in 25.6 oz .. Y Jun 2016 8,995 i i Hasselblad X1D
 
Leica SL« » 5.8 in 4.1 in 1.5 in 29.9 oz 400 Y Oct 2015 7,450 i i Leica SL
 
Nikon Z6« » 5.3 in 4.0 in 2.6 in 23.8 oz 310 Y Aug 2018 1,999 i i Nikon Z6
 
Nikon Z7« » 5.3 in 4.0 in 2.6 in 23.8 oz 330 Y Aug 2018 3,399 i i Nikon Z7
 
Nikon D600« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Sep 2012 2,099- i Nikon D600
 
Olympus E-M1X« » 5.7 in 5.8 in 3.0 in 35.2 oz 870 Y Jan 2019 2,999 i i Olympus E-M1X
 
Panasonic S1R« » 5.9 in 4.3 in 3.8 in 35.8 oz 380 Y Feb 2019 3,699 i i Panasonic S1R
 
Pentax 645D« » 6.1 in 4.6 in 4.7 in 52.2 oz 800 Y Mar 2010 9,995- i Pentax 645D
 
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
 
Sony A99 II« » 5.6 in 4.1 in 3.0 in 29.9 oz 490 Y Sep 2016 3,199 i i Sony A99 II
 
Sony A850« » 6.1 in 4.6 in 3.2 in 31.6 oz 880 Y Aug 2009 1,999- i Sony A850
 
Sony A900« » 6.1 in 4.6 in 3.2 in 31.6 oz 880 Y Sep 2008 2,999- i Sony A900
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. 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 S1 was launched at a markedly lower price (by 71 percent) than the 645Z, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Panasonic S1 vs Pentax 645Z

The size of the imaging sensor is a crucial determinant 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Panasonic S1 features a full frame sensor and the Pentax 645Z a medium format sensor. The sensor area in the 645Z is 70 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 0.79. The sensor in the S1 has a native 3:2 aspect ratio, while the one in the 645Z offers a 4:3 aspect.

In terms of underlying technology, both cameras are build around CMOS sensors.

Panasonic S1 and Pentax 645Z sensor measures

With 51.1MP, the 645Z offers a higher resolution than the S1 (24MP), but the 645Z has smaller individual pixels (pixel pitch of 5.30μm versus 5.94μm for the S1). Yet, the S1 is a much more recent model (by 4 years and 9 months) than the 645Z, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. 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 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 inch or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inch or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inch or 69.9 x 52.4 cm. The corresponding values for the Panasonic S1 are 30 x 20 inch or 76.2 x 50.8 cm for good quality, 24 x 16 inch or 61 x 40.6 cm for very good quality, and 20 x 13.3 inch or 50.8 x 33.9 cm for excellent quality prints.

Unlike the 645Z, the S1 has the capacity to capture high quality composite images (96MP) 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 Panasonic Lumix DC-S1 has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Pentax 645Z are ISO 100 to ISO 204800 (no boost).

S1 versus 645Z MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 645Z has a markedly higher DXO score than the S1 (overall score 6 points higher), which will translate into better image quality. The advantage is based on 0.8 bits higher color depth, 0.2 EV in additional dynamic range, and 0.4 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Panasonic S1» Full Frame 24.0 6000 40004K/60p25.214.5333395Panasonic S1
 
Pentax 645Z« Medium Format 51.1 8256 61921080/60i26.014.74505101Pentax 645Z
 
Canon 5DS« » Full Frame 50.3 8688 57921080/30p24.712.4238187Canon 5DS
 
Canon 5DS R« » Full Frame 50.3 8688 57921080/30p24.612.4230886Canon 5DS R
 
Hasselblad X1D« » Medium Format 51.3 8272 62001080/25p26.214.84489102Hasselblad X1D
 
Leica SL« » Full Frame 24.0 6000 40004K/30p25.013.4182188Leica SL
 
Nikon Z6« » Full Frame 24.3 6048 40244K/30p25.314.3329995Nikon Z6
 
Nikon Z7« » Full Frame 45.4 8256 55044K/30p26.314.6266899Nikon Z7
 
Nikon D600« » Full Frame 24.2 6016 40161080/30p25.114.2298094Nikon D600
 
Olympus E-M1X« » Four Thirds 20.2 5184 38884K/30p----Olympus E-M1X
 
Panasonic S1R« » Full Frame 46.7 8368 55844K/60p26.414.13525100Panasonic S1R
 
Pentax 645D« » Medium Format 39.5 7264 5440-24.612.6126282Pentax 645D
 
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
 
Sony A99 II« » Full Frame 42.2 7952 53044K/30p25.413.4231792Sony A99 II
 
Sony A850« » Full Frame 24.4 6048 4032-23.812.2141579Sony A850
 
Sony A900« » Full Frame 24.4 6048 4032-23.712.3143179Sony A900

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 S1 provides a higher video resolution than the 645Z. It can shoot video footage at 4K/60p, while the Pentax is limited to 1080/60i.

 

Feature comparison: Panasonic S1 vs Pentax 645Z

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the S1 has an electronic viewfinder (5760k 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 S1 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. The table below summarizes some of the other core capabilities of the Panasonic S1 and Pentax 645Z in connection with corresponding information for a sample of similar cameras.

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
Camera
Model
 
Panasonic S1»5760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y Panasonic S1
 
Pentax 645Z«optical Y 3.2 1037 tilting n 1/4000s 3.0 n n Pentax 645Z
 
Canon 5DS« »optical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS
 
Canon 5DS R« »optical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS R
 
Hasselblad X1D« »2360 n 3.0 920 fixed Y 1/2000s 2.3 n n Hasselblad X1D
 
Leica SL« »4400 Y 3.0 1040 fixed Y 1/8000s 11.0 n n Leica SL
 
Nikon Z6« »3690 Y 3.2 2100 tilting Y 1/8000s 12.0 n Y Nikon Z6
 
Nikon Z7« »3690 Y 3.2 2100 tilting Y 1/8000s 9.0 n Y Nikon Z7
 
Nikon D600« »optical Y 3.0 921 fixed n 1/4000s 5.5 Y n Nikon D600
 
Olympus E-M1X« »2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y Olympus E-M1X
 
Panasonic S1R« »5760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y Panasonic S1R
 
Pentax 645D« »optical Y 3.0 921 fixed n 1/4000s 1.1 n n Pentax 645D
 
Sony A7 III« »2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y Sony A7 III
 
Sony A99 II« »2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y Sony A99 II
 
Sony A850« »optical Y 3.0 922 fixed n 1/8000s 3.0 n Y Sony A850
 
Sony A900« »optical Y 3.0 922 fixed n 1/8000s 5.0 n Y Sony A900

One feature that differentiates the S1 and the 645Z is in-body image stabilization (IBIS). The S1 reduces the risk of handshake-induced blur with all attached lenses, while the 645Z has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the S1 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

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 S1 writes its imaging data to SDHC or XQD 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 S1 supports UHS-II cards (on both slots), while the 645Z can use UHS-I cards.

 

Connectivity comparison: Panasonic S1 vs Pentax 645Z

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 Panasonic Lumix DC-S1 and Pentax 645Z and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Panasonic S1»YstereomonoYYfull3.1Y-YPanasonic S1
 
Pentax 645Z«YstereomonoY-mini3.0---Pentax 645Z
 
Canon 5DS« »YmonomonoY-mini3.0---Canon 5DS
 
Canon 5DS R« »YmonomonoY-mini3.0---Canon 5DS R
 
Hasselblad X1D« »YstereomonoYYmini3.0Y--Hasselblad X1D
 
Leica SL« »YstereomonoYYfull3.0Y--Leica SL
 
Nikon Z6« »YstereomonoYYmicro3.1Y-YNikon Z6
 
Nikon Z7« »YstereomonoYYmicro3.1Y-YNikon Z7
 
Nikon D600« »YmonomonoYYmini2.0---Nikon D600
 
Olympus E-M1X« »YstereomonoYYmicro3.0Y-YOlympus E-M1X
 
Panasonic S1R« »YstereomonoYYfull3.1Y-YPanasonic S1R
 
Pentax 645D« »Ystereo----2.0---Pentax 645D
 
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
 
Sony A99 II« »YstereomonoYYmicro2.0YYYSony A99 II
 
Sony A850« »Y----mini2.0---Sony A850
 
Sony A900« »Y----mini2.0---Sony A900

It is notable that the S1 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.

Both the S1 and the 645Z are recent models that are part of the current product line-up. The 645Z replaced the earlier Pentax 645D, while the S1 does not have a direct predecessor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic and Pentax websites.


Review summary: Panasonic S1 vs Pentax 645Z

So how do things add up? Is the Panasonic S1 better than the Pentax 645Z or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Panasonic Lumix DC-S1:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better video: Provides higher definition movie capture (4K/60p vs 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 (2100k vs 1037k dots).
  • More flexible LCD: Has full-flex screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (9 vs 3 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Less heavy: Is lighter (by 533g or 34 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More affordable: Was introduced into a lower priced category (71 percent cheaper at launch).
  • More modern: Reflects 4 years and 9 months of technical progress since the 645Z launch.

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Reasons to prefer the Pentax 645Z:

  • More detail: Has more megapixels (51.1 vs 24MP), which boosts linear resolution by 43%.
  • Better image quality: Scores markedly higher (6 points) in the DXO overall evaluation.
  • Better low-light sensitivity: Can shoot in dim conditions (0.4 stops ISO advantage).
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (650 versus 400) out of a single battery charge.
  • 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 S1 is the clear winner of the match-up (20 : 7 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.

S1 20:07 645Z

How about other alternatives? Do the specifications of the Panasonic S1 and the Pentax 645Z place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the S1 or the 645Z. 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: Panasonic S1 vs Pentax 645Z

This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Panasonic S1»+ +---4/5 Feb 2019 2,499 i i Panasonic S1
 
Pentax 645Z«--4.5/55/55/5 Apr 2014 8,499 i i Pentax 645Z
 
Canon 5DS« »+83/1004.5/55/54.5/5 Feb 2015 3,699 i i Canon 5DS
 
Canon 5DS R« »+83/1005/55/54.5/5 Feb 2015 3,699 i i Canon 5DS R
 
Hasselblad X1D« »o81/100--4/5 Jun 2016 8,995 i i Hasselblad X1D
 
Leica SL« »-84/1004.5/54/54/5 Oct 2015 7,450 i i Leica SL
 
Nikon Z6« »--4.5/5-5/5 Aug 2018 1,999 i i Nikon Z6
 
Nikon Z7« »+89/1004.5/54.5/55/5 Aug 2018 3,399 i i Nikon Z7
 
Nikon D600« »+ +87/1005/54.5/54.5/5 Sep 2012 2,099- i Nikon D600
 
Olympus E-M1X« »o-4.5/5-- Jan 2019 2,999 i i Olympus E-M1X
 
Panasonic S1R« »--4.5/5-4.5/5 Feb 2019 3,699 i i Panasonic S1R
 
Pentax 645D« »---4.5/5- Mar 2010 9,995- i Pentax 645D
 
Sony A7 III« »+ +89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
 
Sony A99 II« »-85/1004.5/54.5/54.5/5 Sep 2016 3,199 i i Sony A99 II
 
Sony A850« »-75/100-4/54.5/5 Aug 2009 1,999- i Sony A850
 
Sony A900« »+ ++ +4.5/54/55/5 Sep 2008 2,999- i Sony A900
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Panasonic S1:
Check Amazon price
Pentax 645Z:
Check Amazon price

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: Panasonic S1 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 Panasonic S1 Pentax 645Z
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Leica L mount lenses Pentax 645 mount lenses
    Launch Date February 2019 April 2014
    Launch Price USD 2499 USD 8499
    Sensor Specs Panasonic S1 Pentax 645Z
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Medium Format Sensor
    Sensor Size 35.6 x 23.8 mm 43.8 x 32.8 mm
    Sensor Area 847.28 mm2 1436.64 mm2
    Sensor Diagonal 42.8 mm 54.7 mm
    Crop Factor 1.0x 0.79x
    Sensor Resolution 24 Megapixels 51.1 Megapixels
    Image Resolution 6000 x 4000 pixels 8256 x 6192 pixels
    Pixel Pitch 5.94 μm 5.30 μm
    Pixel Density 2.83 MP/cm2 3.56 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/60p Video 1080/60i Video
    ISO Setting 100-51200 ISO 100-204800 ISO
    ISO Boost 50-204800 ISO no Enhancement
    Image Processor Venus PRIME III
    DXO Sensor Quality (score) 95 101
    DXO Color Depth (bits) 25.2 26.0
    DXO Dynamic Range (EV) 14.5 14.7
    DXO Low Light (ISO) 3333 4505
    Screen Specs Panasonic S1 Pentax 645Z
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 98%
    Viewfinder Magnification 0.78x 0.78x
    Viewfinder Resolution 5760k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.2 inch 3.2 inch
    LCD Resolution 2100k dots 1037k dots
    LCD Attachment Fully flexible screen Tilting screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Panasonic S1 Pentax 645Z
    Autofocus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000/s 1/4000/s
    Continuous Shooting 9 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy400 000 actuations100 000 actuations
    Electronic Shutterup to 1/8000sno E-Shutter
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC or XQD cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    UHS card support Dual UHS-II UHS-I
    Connectivity Specs Panasonic S1 Pentax 645Z
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.1 USB 3.0
    HDMI Port full HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Panasonic S1 Pentax 645Z
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type DMW-BLJ31 power pack D-LI90 power pack
    Battery Life (CIPA)400 shots per charge650 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 149 x 110 x 97 mm
    (5.9 x 4.3 x 3.8 in)
    156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    Camera Weight 1017 g (35.9 oz) 1550 g (54.7 oz)

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