Pentax 645Z

    73
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    Highlights

    • 51.4 MP Medium format CMOS Sensor
    • No Optical Low-pass Filter
    • 100 - 204,800 Native ISO
    • 27 Focus Points
    • 3.2" 1,037k dot Tilting Screen
    • Optical (pentaprism) Viewfinder
    • 3.0 fps Continuous Shooting
    • 1920 x 1080 Video Shooting
    • 25 min Video Recording Limit
    • Wheather Sealed Body
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    Overview

    Pentax 645Z was announced in 2014 and is a Medium format (44 x 33 mm) DSLR camera with 51.4 Megapixel CMOS sensor. Its native ISO ranges from 100 to 204,800. The camera has a Tilting 3.2" screen with 1,037k dot resolution and built-in Optical (pentaprism) viewfinder.

    Pentax 645Z can capture video up to 1920 x 1080 resolution.

    Pros and Cons

    In this section we present pros and cons of Pentax 645Z.

    PROS

    •   Video Capture
    •   Large Sensor
    •   High Resolution Sensor - 51.4 Megapixel
    •   204,800 Highest Native ISO
    •   Face Detection
    •   Live View Autofocus
    •   Large Screen - 3.2"
    •   High DxO Overall Score - 101
    •   High USB Speed
    •   HDMI Output
    •   Environmental Sealing
    •   2 Storage Slots
    •   Orientation Sensor

    CONS

    •   Expensive
    •   No Image Stabilization
    •   Low Max Continuous Shooting - 3.0 fps
    •   Low Flash Sync Speed - 1/125 sec
    •   Low Video Resolution - 1920 x 1080
    •   Low Video Recording Limit
    •   No Headphone Output
    •   No Built-in GPS
    •   No Built-In Wi-Fi
    •   No Built-In Bluetooth
    •   Heavy - 1550 g (3.42 lb / 54.67 oz)

    And here are some specifications which fall into average criteria and are neither in PROs nor in CONs category:

    AVERAGE

    •   100 Lowest Native ISO
    •   -3 EV Min AF Detection
    •   27 Focus Points
    •   Tilting Screen
    •   Screen Resolution - 1,037k dot
    •   Max Shutter Speed (Mechanical or 1st Curtain) - 1/4000 sec
    •   Battery Life - 650 shots

    Predecessor

    Here we are comparing Pentax 645Z to its predecessor 645D and displaying the major changes.

    UPGRADES Pentax 645Z vs Pentax 645D
    Video Capture vs
    Higher Sensor Resolution 51.4 Megapixel vs 40 Megapixel
    Lower Native ISO 100 vs 200
    Higher Native ISO 204,800 vs 1,600
    More Powerful Processor PRIME III vs PRIME II
    Max Image Resolution 8256 x 6192 vs 7264 x 5440
    More Focus Points 27 vs 11
    Tracking Autofocus vs
    Face Detection vs
    Contrast Detection for Autofocus vs
    Screen Type Tilting vs Fixed
    Larger Screen 3.2" vs 3.0"
    Higher Resolution Screen 1,037k dot vs 921k dot
    Live View vs
    Higher Max Continuous Shooting 3.0 fps vs 1.1 fps
    Lower Min Metering -1 EV vs +2 EV
    Higher DxO Low Light ISO 4505 vs 1262
    Higher DxO Color Depth 26.0 vs 24.6
    Higher DxO Dynamic Range 14.7 vs 12.6
    Higher DxO Overall Score 101 vs 82
    Higher USB Speed USB 3.2 Gen 1x1 (5 GBit/sec) vs USB 2.0 (480 Mbit/sec)
    HDMI Output Micro Type D vs
    Speaker Stereo vs
    Microphone Input vs
    Dust Proof vs
    Freeze Proof vs
    DOWNGRADES Pentax 645Z vs Pentax 645D
    Built-in Microphone Mono vs Stereo
    Heavier 1550 g (3.42 lb / 54.67 oz) vs 1480 g (3.26 lb / 52.21 oz)
    Shorter Battery Life 650 shots vs 800 shots

    For more detailed comparison between the models please visit Pentax 645Z vs 645D.

    Screen and Viewfinder

    Tilting screen

    Pentax 645Z has a 3.2" Tilting screen with 1,037k dot resolution. Tilting screen makes this camera very useful for photography purposes but not so useful for video shooting.

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    Pentax 645Z with Tilting screen


    Optical (pentaprism) Viewfinder

    Camera has a built-in Optical (pentaprism) viewfinder. It has a 98% coverage and 0.56x (0.71x 35mm equivalent) magnification.

    Sensor

    Pentax 645Z features a 51.4 megapixel Medium format CMOS sensor with dimensions of 44 x 33 mm and a total area of 1452 mm2. Its native ISO range is 100 - 204,800.


    Here is a sensor size comparison chart where you can see how Pentax 645Z's Medium format sensor compares with other types of sensors:

    Sensor size chart
    Sensor Dimensions Area Aspect Ratio Crop Factor
    Image cannot be displayedMedium Format44 x 33 mm1452 mm24:30.79x
    Image cannot be displayedFull Frame36 x 24 mm864 mm23:21x
    Image cannot be displayedAPS-H27 x 18 mm486 mm23:21.3x
    Image cannot be displayedAPS-C23.6 x 15.6 mm368.2 mm23:21.5x
    Image cannot be displayedAPS-C (Canon)22.3 x 14.9 mm332.3 mm23:21.6x
    Image cannot be displayedMicro Four Thirds17.4 x 13 mm226.2 mm24:32x
    Image cannot be displayed1-inch13.2 x 8.8 mm116.2 mm23:22.7x
    Image cannot be displayed1/1.7-inch7.44 x 5.58 mm41.5 mm24:34.7x
    Image cannot be displayed1/2.3-inch6.17 x 4.55 mm28.1 mm24:35.6x

    Photography Features

    Camera is equipped with PRIME III processor and can take pictures up to 8256 x 6192 resolution. It can also take pictures with lower resolutions like 6912 x 5184, 5376 x4032, 1920 x 1080 with 4:3 aspect ratios.


    Lens Mount

    Pentax 645Z has Pentax 645AF2 lens mount. Due to Medium format sensor its crop factor (also called lens multiplier) is 0.79x. This means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length times 0.79.


    No Low-Pass Filter

    There is no optical low-pass filter (OLPF), also known as an anti-aliasing filter, in front of the sensor. This results in a slightly sharper image but may also introduce moiré patterns and aliasing artifacts when photographing subjects with fine, repetitive patterns or details.


    No In-Body Image Stabilization

    The camera does not have in-body image stabilization (IBIS) so it needs lenses with optical image stabilization for vibration reduction.

    Check out the cameras which are frequently compared to Pentax 645Z.

    Connectivity, Battery and Storage

    USB Input and HDMI Output

    Pentax 645Z has a USB 3.2 Gen 1x1 (5 GBit/sec) input for data transfer. There is a Micro Type D HDMI connector for video signal output.


    Battery

    Pentax 645Z comes with D-LI90 battery pack with battery life of 650 shots.


    External Storage Slots

    The camera has Dual SD/SDHC/SDXC (UHS-I) card slots.

    Other Features

    Shutter

    Pentax 645Z has Mechanical Focal Plane shutter. Shutter speed can go up to 1/4000 sec. Camera can shoot continuously up to 3.0 fps.


    Focusing

    Pentax 645Z has 27 focusing points and from -3 to +18 EV detection range There is also face detection feature which automatically finds and focuses on faces.


    Exposure

    Camera's exposure metering ranges from -1 to +21 EV and you can set the exposure compensation within the ±5 EV range. You can also do exposure bracketing and manual exposure adjustment.


    Flash

    Pentax 645Z has no built-in flash but an external flash may be connected via Hot Shoe or X-Sync Terminal. The fastest flash synchronization speed is 1/125 sec. Flash compensation can be set from -2 to +1 EV with 1/2 EV step increments.

    Physical Parameters

    Pentax 645Z has dimensions of 156 x 117 x 123 mm (6.14 x 4.61 x 4.84"). It weighs 1550 g (3.42 lb / 54.67 oz), so it is a heavy camera.

    156 mm (6.14")

    117 mm (4.61")

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    117 mm (4.61")

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    123 mm (4.84")

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    Pentax 645Z dimensions

    Pentax 645Z for Different Types of Photography

    We give scores to the camera for different type of photography based on its features and specifications. Let us see how Pentax 645Z is suitable for six different types of photography.


    Landscape Photography

    EXCELLENT
    90

    Pentax 645Z gets a score of 90 and is EXCELLENT choice for Landscape photography.

    •   Large Sensor
    •   Screen Resolution - 1,037k dot
    •   No Built-in GPS
    •   Environmental Sealing

    Sports Photography

    GOOD
    78

    Pentax 645Z gets a score of 78 and is GOOD choice for Sports photography.

    •   204,800 Highest Native ISO
    •   27 Focus Points
    •   Face Detection
    •   No Image Stabilization
    •   Screen Resolution - 1,037k dot
    •   Low Max Continuous Shooting - 3.0 fps
    •   Battery Life - 650 shots
    •   2 Storage Slots
    •   Orientation Sensor

    Wildlife Photography

    GOOD
    74

    Pentax 645Z gets a score of 74 and is GOOD choice for Wildlife photography.

    •   204,800 Highest Native ISO
    •   27 Focus Points
    •   No Image Stabilization
    •   Screen Resolution - 1,037k dot
    •   Low Max Continuous Shooting - 3.0 fps
    •   Environmental Sealing
    •   Battery Life - 650 shots
    •   2 Storage Slots
    •   Orientation Sensor

    Portrait Photography

    GOOD
    84

    Pentax 645Z gets a score of 84 and is GOOD choice for Portrait photography.

    •   Large Sensor
    •   27 Focus Points
    •   Face Detection
    •   No Image Stabilization
    •   Large Screen - 3.2"
    •   Screen Resolution - 1,037k dot
    •   Low Flash Sync Speed - 1/125 sec
    •   Orientation Sensor

    Street Photography

    GOOD
    75

    Pentax 645Z gets a score of 75 and is GOOD choice for Street photography.

    •   Large Sensor
    •   27 Focus Points
    •   No Image Stabilization
    •   Tilting Screen
    •   Screen Resolution - 1,037k dot
    •   No Built-in GPS
    •   Environmental Sealing
    •   Heavy - 1550 g (3.42 lb / 54.67 oz)

    Travel Photography

    AVERAGE
    56

    Pentax 645Z gets a score of 56 and is AVERAGE choice for Travel photography.

    •   No Image Stabilization
    •   Tilting Screen
    •   Screen Resolution - 1,037k dot
    •   Low Video Resolution - 1920 x 1080
    •   Low Video Recording Limit
    •   No Built-in GPS
    •   Environmental Sealing
    •   Heavy - 1550 g (3.42 lb / 54.67 oz)
    •   Battery Life - 650 shots

    Pentax 645Z Evaluation

    We evaluate Pentax 645Z and give score of 73 out of 100. We also give separate scores for 7 different categories according to the available features and specifications some of which are listed below. These evaluations are relative and may change each time a new camera is added to the database.


    OVERALL
    73

    Sensor

    GOOD
    82

    We give Pentax 645Z a score of 82 for Sensor parameters.

    •   Large Sensor
    •   High Resolution Sensor - 51.4 Megapixel
    •   100 Lowest Native ISO
    •   204,800 Highest Native ISO
    •   High DxO Overall Score - 101

    Photo

    GOOD
    73

    We give Pentax 645Z a score of 73 for Photo parameters.

    •   No Image Stabilization
    •   Max Shutter Speed (Mechanical or 1st Curtain) - 1/4000 sec
    •   Low Max Continuous Shooting - 3.0 fps
    •   Low Flash Sync Speed - 1/125 sec

    Video

    BAD
    15

    We give Pentax 645Z a score of 15 for Video parameters.

    •   No Image Stabilization
    •   Low Video Resolution - 1920 x 1080
    •   Low Video Recording Limit

    Focusing

    EXCELLENT
    85

    We give Pentax 645Z a score of 85 for Focusing parameters.

    •   -3 EV Min AF Detection
    •   27 Focus Points
    •   Face Detection
    •   Live View Autofocus

    Screen and Viewfinder

    GOOD
    78

    We give Pentax 645Z a score of 78 for Screen and Viewfinder parameters.

    •   Tilting Screen
    •   Large Screen - 3.2"
    •   Screen Resolution - 1,037k dot

    Connectivity

    GOOD
    77

    We give Pentax 645Z a score of 77 for Connectivity parameters.

    •   High USB Speed
    •   HDMI Output
    •   No Headphone Output
    •   No Built-in GPS
    •   No Built-In Wi-Fi
    •   No Built-In Bluetooth

    Battery, Storage and Physical

    AVERAGE
    68

    We give Pentax 645Z a score of 68 for Battery, Storage and Physical parameters.

    •   Environmental Sealing
    •   Heavy - 1550 g (3.42 lb / 54.67 oz)
    •   Battery Life - 650 shots
    •   2 Storage Slots


    For a full specification list please go to the specifications page:

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