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Pentax 645Z vs Pentax I-10

Portability
49
Imaging
81
Features
74
Overall
78
Pentax 645Z front
 
Pentax Optio I-10 front
Portability
93
Imaging
35
Features
24
Overall
30

Pentax 645Z vs Pentax I-10 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
  • Released April 2014
  • Replaced the Pentax 645D
Pentax I-10
(Full Review)
  • 12MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 80 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 28-140mm (F3.5-5.9) lens
  • 153g - 101 x 65 x 28mm
  • Launched January 2010
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Pentax 645Z vs Pentax I-10 Overview

Following is a extensive review of the Pentax 645Z and Pentax I-10, one is a Pro DSLR and the other is a Small Sensor Compact and they are both built by Pentax. There is a crucial difference among the resolutions of the 645Z (51MP) and I-10 (12MP) and the 645Z (Medium format) and I-10 (1/2.3") possess different sensor size.

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The 645Z was announced 4 years after the I-10 which is a fairly serious gap as far as camera tech is concerned. The two cameras offer different body type with the Pentax 645Z being a Large SLR camera and the Pentax I-10 being a Compact camera.

Before diving in to a comprehensive comparison, below is a simple summation of how the 645Z scores vs the I-10 in regards to portability, imaging, features and an overall score.

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Reasons to pick Pentax 645Z over the Pentax I-10

 645Z I-10 
LaunchedApril 2014January 2010More modern by 52 months
Display typeTiltingFixed Tilting display
Display sizing3.2"2.7"Larger display (+0.5")
Display resolution1037k230kCrisper display (+807k dot)

Reasons to pick Pentax I-10 over the Pentax 645Z

 I-10 645Z 

Common features in the Pentax 645Z and Pentax I-10

 645Z I-10 
Manually focus More precise focus
Selfie screen Neither has selfie screen
Touch friendly display Neither has Touch friendly display

Pentax 645Z vs Pentax I-10 Physical Comparison

In case you're aiming to carry around your camera regularly, you're going to have to factor its weight and measurements. The Pentax 645Z has physical dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") accompanied by a weight of 1550 grams (3.42 lbs) whilst the Pentax I-10 has proportions of 101mm x 65mm x 28mm (4.0" x 2.6" x 1.1") having a weight of 153 grams (0.34 lbs).

Take a look at the Pentax 645Z and Pentax I-10 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will change based on the lens you choose at that time. Underneath is the front view proportions comparison of the 645Z versus the I-10.

Pentax 645Z vs Pentax I-10 size comparison

Factoring in size and weight, the portability score of the 645Z and I-10 is 49 and 93 respectively.

Pentax 645Z vs Pentax I-10 top view buttons comparison

Pentax 645Z vs Pentax I-10 Sensor Comparison

Generally, it is very tough to imagine the contrast in sensor sizes purely by researching a spec sheet. The image underneath should give you a greater sense of the sensor dimensions in the 645Z and I-10.

Clearly, each of these cameras offer different megapixel count and different sensor sizes. The 645Z having a larger sensor is going to make shooting bokeh simpler and the Pentax 645Z will render more detail with its extra 39MP. Greater resolution will also enable you to crop photos a little more aggressively. The younger 645Z should have an advantage when it comes to sensor innovation.

Pentax 645Z vs Pentax I-10 sensor size comparison

Pentax 645Z vs Pentax I-10 Screen and ViewFinder

Pentax 645Z vs Pentax I-10 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645Z as a Portrait photography camera
Pentax I-10 as a Portrait photography camera
88
you can focus manually
amazing resolution (51MP)
sensor size is big (Medium format)
offers face detection focusing
exports RAW files
27
focusing manually
no manual control
cannot use external flash
low MP (12 megapixels)
sensor is small (1/2.3")
has no RAW files
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Street Comparison

Pentax 645Z Street photography info
Pentax I-10 Street photography info
63
has a tilting screen
sensor size is big (Medium format)
exports RAW files
environment sealing
good high ISO (204,800)
lack of image stabilization
heavier than competition in class (1,550g)
56
has image stabilization (Sensor-shift)
screen does not articulate
sensor is small (1/2.3")
has no RAW files
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Sports Comparison

Pentax 645Z Sports photography information
Pentax I-10 Sports photography information
71
amazing resolution (51 megapixels)
sensor size is big (Medium format)
offers tracking autofocus
environment sealing
supports phase detect AF
slow continuous shooting (3.0 frames per second)
lack of image stabilization
not so great battery power (650 shots)
31
has image stabilization (Sensor-shift)
features tracking autofocus
slow fps (1.0 fps)
no shutter priority mode
low MP (12 megapixels)
sensor is small (1/2.3")
has no phase detect auto focus
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Travel Comparison

Pentax 645Z as a Travel photography camera
Pentax I-10 as a Travel photography camera
51
environment sealing
amazing resolution (51MP)
not so great battery power (650 shots)
heavier than competition in class (1,550g)
display isn't selfie friendly
57
has built in flash
really wide (28mm)
no Time Lapse recording
low MP (12 megapixels)
does not have a selfie friendly screen
slow maximum aperture (f3.5)
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Landscape Comparison

Pentax 645Z Landscape photography info
Pentax I-10 Landscape photography info
78
you can focus manually
switch lenses (Pentax 645AF2 mount)
screen size is good (3.2")
amazing resolution (51 megapixels)
sensor size is big (Medium format)
no anti-alias filter
good high ISO (204,800)
exports RAW files
environment sealing
has dual storage slots
lack of image stabilization
not so great battery power (650 CIPA)
36
focusing manually
really wide (28mm)
has image stabilization (Sensor-shift)
lens is fixed (fixed lens mount)
slow maximum aperture (f3.5)
tiny screen (2.7 inches)
no manual control
low MP (12MP)
sensor is small (1/2.3")
has no RAW files
no Time Lapse recording
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Vlogging Comparison

Pentax 645Z Vlogging factors
Pentax I-10 Vlogging factors
27
offers face detection focusing
video res high (1920 x 1080 pixels)
comes with external mic jack
display isn't selfie friendly
lack of image stabilization
heavier than competition in class (1,550g)
28
really wide (28mm)
has image stabilization (Sensor-shift)
slow maximum aperture (f3.5)
does not have a selfie friendly screen
low video resolution (1280 x 720 resolution)
no external mic socket
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Pentax 645Z vs Pentax I-10 Specifications

Detailed spec comparison table for Pentax 645Z and Pentax I-10
 Pentax 645ZPentax Optio I-10
General Information
Company Pentax Pentax
Model type Pentax 645Z Pentax Optio I-10
Class Pro DSLR Small Sensor Compact
Released 2014-04-15 2010-01-25
Physical type Large SLR Compact
Sensor Information
Powered by PRIME III Prime
Sensor type CMOS CCD
Sensor size Medium format 1/2.3"
Sensor dimensions 44 x 33mm 6.17 x 4.55mm
Sensor surface area 1,452.0mm² 28.1mm²
Sensor resolution 51MP 12MP
Anti alias filter
Aspect ratio 4:3 4:3 and 16:9
Peak resolution 8256 x 6192 4000 x 3000
Highest native ISO 204800 6400
Minimum native ISO 100 80
RAW pictures
Autofocusing
Focus manually
Touch to focus
Continuous AF
AF single
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 27 9
Lens
Lens support Pentax 645AF2 fixed lens
Lens zoom range - 28-140mm (5.0x)
Highest aperture - f/3.5-5.9
Macro focusing distance - 10cm
Number of lenses 6 -
Crop factor 0.8 5.8
Screen
Screen type Tilting Fixed Type
Screen diagonal 3.2 inch 2.7 inch
Screen resolution 1,037k dots 230k dots
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 98 percent -
Viewfinder magnification 0.85x -
Features
Minimum shutter speed 30 seconds 4 seconds
Fastest shutter speed 1/4000 seconds 1/2000 seconds
Continuous shutter rate 3.0fps 1.0fps
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes -
Change WB
Image stabilization
Inbuilt flash
Flash distance no built-in flash 4.00 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 Auto, On, Off, Red-eye, Soft
External flash
Auto exposure bracketing
White balance bracketing
Fastest flash synchronize 1/125 seconds -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Highest video resolution 1920x1080 1280x720
Video format MPEG-4, H.264 Motion JPEG
Mic port
Headphone port
Connectivity
Wireless None Eye-Fi Connected
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 lbs) 153 grams (0.34 lbs)
Dimensions 156 x 117 x 123mm (6.1" x 4.6" x 4.8") 101 x 65 x 28mm (4.0" x 2.6" x 1.1")
DXO scores
DXO Overall 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 pictures -
Battery type Battery Pack -
Battery ID D-LI90 D-LI92
Self timer Yes (2 or 10 secs) Yes (2 or 10 sec)
Time lapse feature
Type of storage Dual SD/SDHC/SDXC slots SD/SDHC, Internal
Card slots Two 1
Pricing at release $5,024 $310