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Pentax 645Z vs Pentax E90

Portability
49
Imaging
80
Features
74
Overall
77
Pentax 645Z front
 
Pentax Optio E90 front
Portability
94
Imaging
33
Features
11
Overall
24

Pentax 645Z vs Pentax E90 Key Specs

Pentax 645Z
(Full Review)
  • 51MP - Medium format Sensor
  • 3.2" Tilting Screen
  • ISO 100 - 204800
  • No Anti-Alias Filter
  • 1920 x 1080 video
  • Pentax 645AF2 Mount
  • 1550g - 156 x 117 x 123mm
  • Introduced April 2014
  • Superseded the Pentax 645D
Pentax E90
(Full Review)
  • 10MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • ISO 80 - 3200
  • 1280 x 720 video
  • 32-95mm (F3.1-5.9) lens
  • 145g - 102 x 59 x 25mm
  • Announced January 2010
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Pentax 645Z vs Pentax E90 Overview

Lets look more in depth at the Pentax 645Z and Pentax E90, former being a Pro DSLR while the latter is a Small Sensor Compact and they are both designed by Pentax. There is a considerable difference among the sensor resolutions of the 645Z (51MP) and E90 (10MP) and the 645Z (Medium format) and E90 (1/2.3") boast totally different sensor measurements.

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The 645Z was unveiled 4 years later than the E90 and that is a fairly large difference as far as camera tech is concerned. Both of these cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Pentax E90 being a Compact camera.

Before delving right into a full comparison, here is a simple synopsis of how the 645Z scores vs the E90 for portability, imaging, features and an overall rating.

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Reasons to pick Pentax 645Z over the Pentax E90

 645Z E90 
AnnouncedApril 2014January 2010Fresher by 52 months
Manual focus Very exact focus
Screen typeTiltingFixed Tilting screen
Screen size3.2"2.7"Bigger screen (+0.5")
Screen resolution1037k230kSharper screen (+807k dot)

Reasons to pick Pentax E90 over the Pentax 645Z

 E90 645Z 

Common features in the Pentax 645Z and Pentax E90

 645Z E90 
Selfie screen Lack of selfie screen
Touch friendly screen Neither provides Touch friendly screen

Pentax 645Z vs Pentax E90 Physical Comparison

For anyone who is planning to carry your camera often, you will have to factor in its weight and proportions. The Pentax 645Z provides outside 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 Pentax E90 has measurements of 102mm x 59mm x 25mm (4.0" x 2.3" x 1.0") accompanied by a weight of 145 grams (0.32 lbs).

Check out the Pentax 645Z and Pentax E90 in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will change dependant on the lens you select at the time. The following is a front view overall size comparison of the 645Z versus the E90.

Pentax 645Z vs Pentax E90 size comparison

Considering size and weight, the portability score of the 645Z and E90 is 49 and 94 respectively.

Pentax 645Z vs Pentax E90 top view buttons comparison

Pentax 645Z vs Pentax E90 Sensor Comparison

Often, its tough to visualise the gap in sensor sizing purely by going through specs. The photograph below should offer you a far better sense of the sensor dimensions in the 645Z and E90.

All in all, both of the cameras come with different resolutions and different sensor sizing. The 645Z with its bigger sensor will make achieving shallower depth of field simpler and the Pentax 645Z will provide extra detail having an extra 41 Megapixels. Higher resolution can also let you crop shots a good deal more aggressively. The more modern 645Z is going to have an advantage when it comes to sensor tech.

Pentax 645Z vs Pentax E90 sensor size comparison

Pentax 645Z vs Pentax E90 Screen and ViewFinder

Pentax 645Z vs Pentax E90 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Pentax 645Z Portrait photography features
Pentax E90 Portrait photography features
88
you can focus manually
fantastic resolution (51MP)
big sensor size (Medium format)
includes face detection focus
supports RAW formats
19
manual focus not available
no manual mode
external flash not possible
sensor resolution low (10 megapixels)
small sensor size (1/2.3")
doesn't have RAW format
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Street Comparison

Pentax 645Z Street photography advice
Pentax E90 Street photography advice
63
tilting screen
big sensor size (Medium format)
supports RAW formats
weather proof
above average high ISO (204,800)
no image stabilization
more heavy than competition in class (1,550 grams)
47
screen is fixed
lack of image stabilization
small sensor size (1/2.3")
doesn't have RAW format
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Sports Comparison

Pentax 645Z Sports photography info
Pentax E90 Sports photography info
71
fantastic resolution (51MP)
big sensor size (Medium format)
includes tracking autofocus
weather proof
has phase detect auto focus
very slow continuous shooting (3.0 fps)
no image stabilization
not so great battery pack (650 CIPA)
16
lack of shutter priority mode
lack of image stabilization
sensor resolution low (10MP)
small sensor size (1/2.3")
doesn't have phase detect auto focus
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Travel Comparison

Pentax 645Z as a Travel photography camera
Pentax E90 as a Travel photography camera
51
weather proof
fantastic resolution (51 megapixels)
not so great battery pack (650 shots)
more heavy than competition in class (1,550 grams)
display is not selfie friendly
50
flash built-in
doesn't have Timelapse mode
sensor resolution low (10 megapixels)
doesn't have selfie friendly screen
wide angle not the best (32mm)
slow max aperture (f3.1)
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Landscape Comparison

Pentax 645Z Landscape photography info
Pentax E90 Landscape photography info
78
you can focus manually
interchangeable lenses (Pentax 645AF2 mount)
pretty good screen size (3.2")
fantastic resolution (51MP)
big sensor size (Medium format)
doesnt have anti aliasing filter
above average high ISO (204,800)
supports RAW formats
weather proof
two card slots
no image stabilization
not so great battery pack (650 shots)
22
manual focus not available
fixed lens (fixed lens mount)
wide angle not the best (32mm)
slow max aperture (f3.1)
screen is small (2.7 inches)
no manual mode
lack of image stabilization
sensor resolution low (10MP)
small sensor size (1/2.3")
doesn't have RAW format
doesn't have Timelapse mode
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Vlogging Comparison

Pentax 645Z as a Vlogging camera
Pentax E90 as a Vlogging camera
27
includes face detection focus
video resolution high (1920 x 1080 resolution)
has external microphone socket
display is not selfie friendly
no image stabilization
more heavy than competition in class (1,550g)
22
wide angle not the best (32mm)
slow max aperture (f3.1)
doesn't have selfie friendly screen
lack of image stabilization
video res low (1280 x 720 resolution)
doesn't have external microphone jack
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Pentax 645Z vs Pentax E90 Specifications

Detailed spec comparison table for Pentax 645Z and Pentax E90
 Pentax 645ZPentax Optio E90
General Information
Make Pentax Pentax
Model type Pentax 645Z Pentax Optio E90
Class Pro DSLR Small Sensor Compact
Introduced 2014-04-15 2010-01-25
Body design Large SLR Compact
Sensor Information
Powered by PRIME III Prime
Sensor type CMOS CCD
Sensor size Medium format 1/2.3"
Sensor measurements 44 x 33mm 6.08 x 4.56mm
Sensor area 1,452.0mm² 27.7mm²
Sensor resolution 51 megapixel 10 megapixel
Anti alias filter
Aspect ratio 4:3 4:3 and 16:9
Full resolution 8256 x 6192 3648 x 2736
Max native ISO 204800 3200
Minimum native ISO 100 80
RAW photos
Autofocusing
Manual focusing
Touch focus
Continuous AF
AF single
Tracking AF
Selective AF
AF center weighted
AF multi area
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 27 3
Lens
Lens support Pentax 645AF2 fixed lens
Lens zoom range - 32-95mm (3.0x)
Largest aperture - f/3.1-5.9
Macro focusing range - 6cm
Number of lenses 6 -
Crop factor 0.8 5.9
Screen
Range of screen Tilting Fixed Type
Screen sizing 3.2 inches 2.7 inches
Resolution of screen 1,037 thousand dot 230 thousand dot
Selfie friendly
Liveview
Touch functionality
Viewfinder Information
Viewfinder Optical (pentaprism) None
Viewfinder coverage 98% -
Viewfinder magnification 0.85x -
Features
Slowest shutter speed 30 seconds 4 seconds
Maximum shutter speed 1/4000 seconds 1/2000 seconds
Continuous shooting speed 3.0 frames per sec -
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Set WB
Image stabilization
Integrated flash
Flash distance no built-in flash 3.50 m
Flash modes 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 -
External flash
AEB
White balance bracketing
Maximum flash sync 1/125 seconds -
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) 1280 x 720 (15 fps), 848 x 480 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps)
Max video resolution 1920x1080 1280x720
Video file format MPEG-4, H.264 Motion JPEG
Microphone input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1550 gr (3.42 lbs) 145 gr (0.32 lbs)
Physical dimensions 156 x 117 x 123mm (6.1" x 4.6" x 4.8") 102 x 59 x 25mm (4.0" x 2.3" x 1.0")
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 shots -
Style of battery Battery Pack -
Battery ID D-LI90 2 x AA
Self timer Yes (2 or 10 secs) Yes (2 or 10 sec)
Time lapse feature
Storage media Dual SD/SDHC/SDXC slots SD/SDHC, Internal
Storage slots Dual One
Launch price $5,024 $100