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Fujifilm X-T4 vs Pentax 645Z

The Fujifilm X-T4 and the Pentax 645Z are two digital cameras that were announced, respectively, in February 2020 and April 2014. The X-T4 is a mirrorless interchangeable lens camera, while the 645Z is a DSLR. The cameras are based on an APS-C (X-T4) and a medium format (645Z) sensor. The Fujifilm has a resolution of 26 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
Fujifilm X-T4
versus
Pentax 645Z
Fujifilm X-T4   Pentax 645Z
Mirrorless system camera Digital single lens reflex
Fujifilm X mount lenses Pentax 645 mount lenses
26 MP, APS-C Sensor 51.1 MP, Medium Format Sensor
4K/60p Video 1080/60i Video
ISO 160-12,800 (80 - 51,200) ISO 100-204,800
Electronic viewfinder (3690k dots) Optical viewfinder
3.0 LCD, 1620k dots 3.2 LCD, 1037k dots
Swivel touchscreen Tilting screen (not touch-sensitive)
15 shutter flaps per second 3 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
500 shots per battery charge650 shots per battery charge
135 x 93 x 64 mm, 607 g 156 x 117 x 123 mm, 1550 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm X-T4 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

An illustration of the physical size and weight of the Fujifilm X-T4 and the Pentax 645Z is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

The X-T4 can be obtained in two different colors (black, silver), while the 645Z is only available in black.

Size Fujifilm X-T4 vs Pentax 645Z
Compare X-T4 versus 645Z top
Comparison X-T4 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 considerably larger (45 percent) than the Fujifilm X-T4. Moreover, the 645Z is substantially heavier (155 percent) than the X-T4. 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 X-T4 gets 500 shots out of its NP-W235 battery, while the 645Z can take 650 images on a single charge of its D-LI90 power pack. The power pack in the X-T4 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

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

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm X-T4 135 mm 93 mm 64 mm 607 g 500 Y Feb 2020 1,699 i
2.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 i
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
5.
 
Fujifilm X100V 128 mm 75 mm 53 mm 478 g 420 Y Feb 2020 1,399 i
6.
 
Fujifilm X-Pro3 141 mm 83 mm 46 mm 497 g 440 Y Oct 2019 1,799 i
7.
 
Fujifilm X-T3 133 mm 93 mm 59 mm 539 g 390 Y Sep 2018 1,499i
8.
 
Fujifilm X-H1 140 mm 97 mm 86 mm 673 g 310 Y Feb 2018 1,899 i
9.
 
Fujifilm X-Pro2 141 mm 83 mm 46 mm 495 g 350 Y Jan 2016 1,699 i
10.
 
Fujifilm X-T2 133 mm 92 mm 49 mm 507 g 340 Y Jul 2016 1,599i
11.
 
Hasselblad X1D 150 mm 98 mm 71 mm 725 g .. Y Jun 2016 8,995i
12.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450i
13.
 
Nikon Z5 134 mm 101 mm 67 mm 675 g 470 Y Jul 2020 1,399 i
14.
 
Panasonic S5 133 mm 98 mm 82 mm 714 g 440 Y Sep 2020 1,999 i
15.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995i
16.
 
Sony A6600 120 mm 67 mm 69 mm 503 g 810 Y Aug 2019 1,399 i
17.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,399i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The X-T4 was launched at a markedly lower price (by 80 percent) than the 645Z, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Fujifilm X-T4 features an APS-C sensor and the Pentax 645Z a medium format sensor. The sensor area in the 645Z is 292 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 0.79. The sensor in the X-T4 has a native 3:2 aspect ratio, while the one in the 645Z offers a 4:3 aspect.

Fujifilm X-T4 and Pentax 645Z sensor measures

With 51.1MP, the 645Z offers a higher resolution than the X-T4 (26MP), but the 645Z nevertheless has larger individual pixels (pixel pitch of 5.30μm versus 3.76μm for the X-T4) due to its larger sensor. However, the X-T4 is a much more recent model (by 5 years and 10 months) than the 645Z, and its sensor will have benefitted from technological advances during this time that 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 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 Fujifilm X-T4 are 31.2 x 20.8 inches or 79.2 x 52.8 cm for good quality, 25 x 16.6 inches or 63.4 x 42.3 cm for very good quality, and 20.8 x 13.9 inches or 52.8 x 35.2 cm for excellent quality prints.

The X-T4 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Fujifilm X-T4 has a native sensitivity range from ISO 160 to ISO 12800, which can be extended to ISO 80-51200. The corresponding ISO settings for the Pentax 645Z are ISO 100 to ISO 204800 (no boost).

X-T4 versus 645Z MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). 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.
 
Fujifilm X-T4 APS-C 26.0 6240 41604K/60p........
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.
 
Fujifilm X100V APS-C 26.0 6240 41604K/30p........
6.
 
Fujifilm X-Pro3 APS-C 26.0 6240 41604K/30p........
7.
 
Fujifilm X-T3 APS-C 26.0 6240 41604K/60p........
8.
 
Fujifilm X-H1 APS-C 24.0 6000 40004K/30p........
9.
 
Fujifilm X-Pro2 APS-C 24.0 6000 40001080/60p........
10.
 
Fujifilm X-T2 APS-C 24.0 6000 40004K/30p........
11.
 
Hasselblad X1D Medium Format 51.3 8272 62001080/25p26.214.84489102
12.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
13.
 
Nikon Z5 Full Frame 24.2 6016 40164K/30p........
14.
 
Panasonic S5 Full Frame 24.0 6000 40004K/60p25.114.5269794
15.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
16.
 
Sony A6600 APS-C 24.0 6000 40004K/30p23.813.4149782
17.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the X-T4 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

Beyond body and sensor, cameras can and do differ across a range of features. For example, the X-T4 has an electronic viewfinder (3690k 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 X-T4 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 0.75x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Fujifilm X-T4 and Pentax 645Z in connection with corresponding information for a sample of similar cameras.

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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.
 
Fujifilm X-T43690 n3.0 / 1620 swivel Y 1/8000s 15.0 n Y
2.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0 n n
3.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0 n n
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0 n n
5.
 
Fujifilm X100V3690 n3.0 / 1620 tilting Y 1/4000s 11.0 Y n
6.
 
Fujifilm X-Pro33690 n3.0 / 1620 tilting Y 1/8000s 8.0 n n
7.
 
Fujifilm X-T33690 n3.0 / 1040 tilting Y 1/8000s 11.0 n n
8.
 
Fujifilm X-H13690 Y3.0 / 1040 full-flex Y 1/8000s 14.0 n Y
9.
 
Fujifilm X-Pro22360 n3.0 / 1620 fixed n 1/8000s 8.0 n n
10.
 
Fujifilm X-T22360 n3.0 / 1040 tilting n 1/8000s 8.0 n n
11.
 
Hasselblad X1D2360 n3.0 / 920 fixed Y 1/2000s 2.3 n n
12.
 
Leica SL4400 Y3.0 / 1040 fixed Y 1/8000s 11.0 n n
13.
 
Nikon Z53690 n3.2 / 1040 tilting Y 1/8000s 4.5 n Y
14.
 
Panasonic S52360 n3.0 / 1840 swivel Y 1/8000s 7.0 n Y
15.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1 n n
16.
 
Sony A66002359 n3.0 / 922 tilting Y 1/4000s 11.0 n Y
17.
 
Sony A772359 Y3.0 / 921 full-flex n 1/8000s 12.0 Y Y

One feature that differentiates the X-T4 and the 645Z is in-body image stabilization (IBIS). The X-T4 reduces the risk of handshake-induced blur with all attached lenses, while the 645Z offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The X-T4 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the 645Z does not have a selfie-screen.

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 X-T4 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 Fujifilm X-T4 and the Pentax 645Z both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

Concerning the storage of imaging data, both the X-T4 and the 645Z write their files to SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The X-T4 supports UHS-II cards (on both slots), while the 645Z can use UHS-I 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 Fujifilm X-T4 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
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Fujifilm X-T4Ystereo / monoY-micro3.1Y-Y
2.
 
Pentax 645ZYstereo / monoY-mini3.0---
3.
 
Canon 5DSYmono / monoY-mini3.0---
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Fujifilm X100VYstereo / monoY-micro3.1Y-Y
6.
 
Fujifilm X-Pro3Ystereo / monoY--3.1Y-Y
7.
 
Fujifilm X-T3Ystereo / monoYYmicro3.1Y-Y
8.
 
Fujifilm X-H1Ystereo / monoY-micro3.0Y--
9.
 
Fujifilm X-Pro2Ystereo / monoY-micro2.0Y--
10.
 
Fujifilm X-T2Ystereo / monoY-micro3.0Y--
11.
 
Hasselblad X1DYstereo / monoYYmini3.0Y--
12.
 
Leica SLYstereo / monoYYfull3.0Y--
13.
 
Nikon Z5Ystereo / monoYYmicro3.2Y-Y
14.
 
Panasonic S5Ystereo / monoYYmicro3.2Y-Y
15.
 
Pentax 645DYstereo / ----2.0---
16.
 
Sony A6600Ystereo / monoYYYES2.0YYY
17.
 
Sony A77Ystereo / monoY-mini2.0---

It is notable that the X-T4 offers wifi support, while the 645Z does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Both the X-T4 and the 645Z are recent models that are part of the current product line-up. The 645Z replaced the earlier Pentax 645D, while the X-T4 followed on from the Fujifilm X-T3. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Fujifilm and Pentax websites.

Review summary

So what conclusions can be drawn? Is the Fujifilm X-T4 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 Fujifilm X-T4:

  • Better video: Provides higher definition movie capture (4K/60p vs 1080/60i).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • 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 (1620k vs 1037k dots).
  • More flexible LCD: Has a swivel 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.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (15 vs 3 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (135x93mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 943g or 61 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 (80 percent cheaper at launch).
  • More modern: Reflects 5 years and 10 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 26MP), which boosts linear resolution by 38%.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.75x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • Longer lasting: Gets more shots (650 versus 500) 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 X-T4 is the clear winner of the match-up (21 : 7 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

X-T4 21:07 645Z

How about other alternatives? Do the specifications of the Fujifilm X-T4 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 X-T4 or the 645Z. 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm X-T45/5+ +5/588/1005/55/5 Feb 2020 1,699 i
2.
 
Pentax 645Z5/5......4.5/55/5 Apr 2014 8,499 i
3.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 3,699 i
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699 i
5.
 
Fujifilm X100V5/5+ +4.5/586/1005/54.5/5 Feb 2020 1,399 i
6.
 
Fujifilm X-Pro34/5+4/585/1004/5.. Oct 2019 1,799 i
7.
 
Fujifilm X-T35/5+ +4.5/588/1005/55/5 Sep 2018 1,499i
8.
 
Fujifilm X-H1..+5/586/1004.5/54.5/5 Feb 2018 1,899 i
9.
 
Fujifilm X-Pro2..+..83/1004.5/54.5/5 Jan 2016 1,699 i
10.
 
Fujifilm X-T25/5+ +..86/1004.5/55/5 Jul 2016 1,599i
11.
 
Hasselblad X1D..o..81/100..4/5 Jun 2016 8,995i
12.
 
Leica SL4/5..4/584/1004.5/54/5 Oct 2015 7,450i
13.
 
Nikon Z54/5..4/589/1004.5/54/5 Jul 2020 1,399 i
14.
 
Panasonic S54.5/5+ +4.5/588/1004.5/54.5/5 Sep 2020 1,999 i
15.
 
Pentax 645D5/5.......... Mar 2010 9,995i
16.
 
Sony A66004/5+4/583/1004.5/54/5 Aug 2019 1,399 i
17.
 
Sony A775/591/100..81/100..5/5 Aug 2011 1,399i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price 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. Also, please note that some of the review sites have changed their methodology and reporting over time.

Fujifilm X-T4:
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: Fujifilm X-T4 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 Fujifilm X-T4 Pentax 645Z
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Fujifilm X mount lenses Pentax 645 mount lenses
    Launch Date February 2020 April 2014
    Launch Price USD 1,699 USD 8,499
    Sensor Specs Fujifilm X-T4 Pentax 645Z
    Sensor Technology BSI-CMOS CMOS
    Sensor Format APS-C Sensor Medium Format Sensor
    Sensor Size 23.5 x 15.6 mm 43.8 x 32.8 mm
    Sensor Area 366.6 mm2 1436.64 mm2
    Sensor Diagonal 28.2 mm 54.7 mm
    Crop Factor 1.5x 0.79x
    Sensor Resolution 26 Megapixels 51.1 Megapixels
    Image Resolution 6240 x 4160 pixels 8256 x 6192 pixels
    Pixel Pitch 3.76 μm 5.30 μm
    Pixel Density 7.08 MP/cm2 3.56 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/60p Video 1080/60i Video
    ISO Setting 160 - 12,800 ISO 100 - 204,800 ISO
    ISO Boost 80 - 51,200 ISO no Enhancement
    Image Processor X-Processor 4 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 Fujifilm X-T4 Pentax 645Z
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 98%
    Viewfinder Magnification 0.75x 0.78x
    Viewfinder Resolution 3690k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1620k dots 1037k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Fujifilm X-T4 Pentax 645Z
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/4000s
    Continuous Shooting 15 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy300 000 actuations100 000 actuations
    Electronic Shutterup to 1/32000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    UHS card support Dual UHS-II UHS-I
    Connectivity Specs Fujifilm X-T4 Pentax 645Z
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.1 USB 3.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Fujifilm X-T4 Pentax 645Z
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type NP-W235 D-LI90
    Battery Life (CIPA)500 shots per charge650 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 135 x 93 x 64 mm
    (5.3 x 3.7 x 2.5 in)
    156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    Camera Weight 607 g (21.4 oz) 1550 g (54.7 oz)

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