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Pentax 645Z vs YI M1

Portability
49
Imaging
80
Features
74
Overall
77
Pentax 645Z front
 
YI M1 front
Portability
87
Imaging
59
Features
66
Overall
61

Pentax 645Z vs YI M1 Key Specs

Pentax 645Z
(Full Review)
  • 51MP - Medium format Sensor
  • 3.2" Tilting Display
  • ISO 100 - 204800
  • No Anti-Alias Filter
  • 1920 x 1080 video
  • Pentax 645AF2 Mount
  • 1550g - 156 x 117 x 123mm
  • Announced April 2014
  • Succeeded the Pentax 645D
YI M1
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fixed Display
  • ISO 100 - 25600
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 350g - 114 x 64 x 34mm
  • Introduced September 2016
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Pentax 645Z vs YI M1 Overview

The following is a in-depth analysis of the Pentax 645Z vs YI M1, former is a Pro DSLR while the other is a Entry-Level Mirrorless by manufacturers Pentax and YI. There is a large difference between the sensor resolutions of the 645Z (51MP) and M1 (20MP) and the 645Z (Medium format) and M1 (Four Thirds) provide totally different sensor sizing.

Photography Glossary

The 645Z was released 3 years before the M1 which is quite a serious difference as far as tech is concerned. Both the cameras feature different body design with the Pentax 645Z being a Large SLR camera and the YI M1 being a Rangefinder-style mirrorless camera.

Before delving right into a full comparison, here is a quick introduction of how the 645Z matches up vs the M1 in regards to portability, imaging, features and an overall mark.

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Reasons to pick Pentax 645Z over the YI M1

 645Z M1 
Display typeTiltingFixed Tilting display
Display size3.2"3"Larger display (+0.2")

Reasons to pick YI M1 over the Pentax 645Z

 M1 645Z 
IntroducedSeptember 2016April 2014Newer by 29 months
Display resolution1040k1037kClearer display (+3k dot)
Touch friendly display Easily navigate

Common features in the Pentax 645Z and YI M1

 645Z M1 
Manually focus More exact focusing
Selfie screen Missing selfie screen

Pentax 645Z vs YI M1 Physical Comparison

When you are intending to travel with your camera, you'll need to take into account its weight and proportions. The Pentax 645Z has outer dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs) while the YI M1 has measurements of 114mm x 64mm x 34mm (4.5" x 2.5" x 1.3") accompanied by a weight of 350 grams (0.77 lbs).

Take a look at the Pentax 645Z vs YI M1 in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will vary depending on the lens you are utilising during that time. Underneath is a front view size comparison of the 645Z against the M1.

Pentax 645Z vs YI M1 size comparison

Looking at size and weight, the portability rating of the 645Z and M1 is 49 and 87 respectively.

Pentax 645Z vs YI M1 top view buttons comparison

Pentax 645Z vs YI M1 Sensor Comparison

Often, it is very tough to visualise the gap between sensor dimensions only by reading through specs. The pic below should give you a greater sense of the sensor dimensions in the 645Z and M1.

All in all, both cameras feature different megapixel count and different sensor dimensions. The 645Z due to its larger sensor will make shooting shallower DOF less difficult and the Pentax 645Z will give you extra detail as a result of its extra 31 Megapixels. Greater resolution will also allow you to crop pics way more aggressively. The more aged 645Z is going to be behind when it comes to sensor tech.

Pentax 645Z vs YI M1 sensor size comparison

Pentax 645Z vs YI M1 Screen and ViewFinder

Pentax 645Z vs YI M1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645Z Portrait photography advice
YI M1 Portrait photography advice
88
manual focus
high resolution (51MP)
big sensor size (Medium format)
offers face detection focus
saves RAW files
75
you can focus manually
MP count good (20MP)
good sensor size (Four Thirds)
provides face detect focus
saves RAW formats
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Street Comparison

Pentax 645Z Street photography highlights
YI M1 Street photography highlights
63
tilting screen
big sensor size (Medium format)
saves RAW files
environment sealing
great ISO range (204,800)
lack of image stabilization
heavier than others (1,550 grams)
73
good sensor size (Four Thirds)
saves RAW formats
includes focus via touch
great high ISO (25,600)
no articulating screen
does not have image stabilization
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Sports Comparison

Pentax 645Z as a Sports photography camera
YI M1 as a Sports photography camera
71
high resolution (51 megapixels)
big sensor size (Medium format)
offers tracking autofocus
environment sealing
supports phase detect auto focus
max frames per second low (3.0 frames/s)
lack of image stabilization
not so great battery (650 shots)
54
MP count good (20 megapixels)
good sensor size (Four Thirds)
great battery (450 per charge)
slow continuous shooting (5.0 fps)
does not have image stabilization
doesn't have phase detect auto focus
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Travel Comparison

Pentax 645Z as a Travel photography camera
YI M1 as a Travel photography camera
51
environment sealing
high resolution (51MP)
not so great battery (650 per charge)
heavier than others (1,550g)
doesn't posses selfie friendly display
78
great battery (450 CIPA)
has bluetooth
includes focus via touch
MP count good (20 megapixels)
display is not selfie friendly
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Landscape Comparison

Pentax 645Z as a Landscape photography camera
YI M1 as a Landscape photography camera
78
manual focus
switch lenses (Pentax 645AF2 mount)
pretty good screen size (3.2 inches)
high resolution (51MP)
big sensor size (Medium format)
does not have low pass filter
great ISO range (204,800)
saves RAW files
environment sealing
2 card slots
lack of image stabilization
not so great battery (650 per charge)
76
you can focus manually
switch lenses (Micro Four Thirds mount)
good sized screen (3")
MP count good (20MP)
good sensor size (Four Thirds)
great high ISO (25,600)
saves RAW formats
great battery (450 CIPA)
does not have image stabilization
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Vlogging Comparison

Pentax 645Z Vlogging factors
YI M1 Vlogging factors
27
offers face detection focus
video resolution high (1920 x 1080 resolution)
comes with external mic support
doesn't posses selfie friendly display
lack of image stabilization
heavier than others (1,550 grams)
33
touch screen
provides face detect focus
high video quality (4096 x 2160 pixels)
display is not selfie friendly
does not have image stabilization
doesn't have microphone support
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Pentax 645Z vs YI M1 Specifications

Detailed spec comparison table for Pentax 645Z and YI M1
 Pentax 645ZYI M1
General Information
Brand Name Pentax YI
Model type Pentax 645Z YI M1
Category Pro DSLR Entry-Level Mirrorless
Announced 2014-04-15 2016-09-19
Physical type Large SLR Rangefinder-style mirrorless
Sensor Information
Processor PRIME III -
Sensor type CMOS CMOS
Sensor size Medium format Four Thirds
Sensor measurements 44 x 33mm 17.3 x 13mm
Sensor surface area 1,452.0mm² 224.9mm²
Sensor resolution 51MP 20MP
Anti alias filter
Aspect ratio 4:3 1:1, 4:3, 3:2 and 16:9
Full resolution 8256 x 6192 5184 x 3888
Max native ISO 204800 25600
Lowest native ISO 100 100
RAW format
Autofocusing
Manual focusing
AF touch
Continuous AF
Single AF
Tracking AF
AF selectice
AF center weighted
AF multi area
Live view AF
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 27 81
Lens
Lens support Pentax 645AF2 Micro Four Thirds
Available lenses 6 107
Crop factor 0.8 2.1
Screen
Type of display Tilting Fixed Type
Display sizing 3.2 inch 3 inch
Resolution of display 1,037k dots 1,040k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 98 percent -
Viewfinder magnification 0.85x -
Features
Slowest shutter speed 30s 60s
Maximum shutter speed 1/4000s 1/4000s
Continuous shooting rate 3.0 frames/s 5.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash distance no built-in flash no built-in flash
Flash options Flash On, Flash On+Red-eye Reduction, Slow-speed Sync, Slow-speed Sync+Red-eye, P-TTL, Trailing Curtain Sync, contrast-control-sync, high-speed sync, wireless sync Auto, On, Off, Slow Sync, Red-Eye Slow
Hot shoe
AE bracketing
White balance bracketing
Maximum flash synchronize 1/125s -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) 4096 x 2160 @ 30p / 75 Mbps, MOV, H.264, AAC
Max video resolution 1920x1080 4096x2160
Video data format MPEG-4, H.264 MPEG-4, H.264
Microphone support
Headphone support
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1550 grams (3.42 lb) 350 grams (0.77 lb)
Physical dimensions 156 x 117 x 123mm (6.1" x 4.6" x 4.8") 114 x 64 x 34mm (4.5" x 2.5" x 1.3")
DXO scores
DXO All around rating 101 not tested
DXO Color Depth rating 26.0 not tested
DXO Dynamic range rating 14.7 not tested
DXO Low light rating 4505 not tested
Other
Battery life 650 photographs 450 photographs
Battery style Battery Pack Battery Pack
Battery ID D-LI90 -
Self timer Yes (2 or 10 secs) Yes (2 or 10 secs)
Time lapse shooting
Storage type Dual SD/SDHC/SDXC slots SD/SDHC/SDXC card
Card slots 2 One
Pricing at launch $5,024 $320