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Pentax 645D vs Pentax H90

Portability
50
Imaging
76
Features
52
Overall
66
Pentax 645D front
 
Pentax Optio H90 front
Portability
93
Imaging
35
Features
24
Overall
30

Pentax 645D vs Pentax H90 Key Specs

Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Display
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Announced March 2010
  • New Model is Pentax 645Z
Pentax H90
(Full Review)
  • 12MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • 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 645D vs Pentax H90 Overview

Let's take a more detailed look at the Pentax 645D and Pentax H90, former being a Pro DSLR while the latter is a Small Sensor Compact and they are both created by Pentax. There is a large difference between the image resolutions of the 645D (40MP) and H90 (12MP) and the 645D (Medium format) and H90 (1/2.3") enjoy different sensor dimensions.

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The 645D was released 2 months later than the H90 so they are both of a similar age. Both of the cameras come with different body type with the Pentax 645D being a Large SLR camera and the Pentax H90 being a Compact camera.

Before we go in to a step-by-step comparison, below is a brief overview of how the 645D matches up versus the H90 for portability, imaging, features and an overall grade.

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Reasons to pick Pentax 645D over the Pentax H90

 645D H90 
Screen dimension3"2.7"Bigger screen (+0.3")
Screen resolution921k230kCrisper screen (+691k dot)

Reasons to pick Pentax H90 over the Pentax 645D

 H90 645D 

Common features in the Pentax 645D and Pentax H90

 645D H90 
LaunchedMarch 2010January 2010Similar age
Manual focus Very precise focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Neither contains selfie screen
Touch friendly screen Neither contains Touch friendly screen

Pentax 645D vs Pentax H90 Physical Comparison

If you're intending to lug around your camera often, you'll have to factor its weight and proportions. The Pentax 645D has got external dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs) and the Pentax H90 has measurements of 101mm x 65mm x 28mm (4.0" x 2.6" x 1.1") having a weight of 153 grams (0.34 lbs).

Analyze the Pentax 645D and Pentax H90 in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will vary depending on the lens you are using at the time. Below is the front view size comparison of the 645D compared to the H90.

Pentax 645D vs Pentax H90 size comparison

Looking at size and weight, the portability score of the 645D and H90 is 50 and 93 respectively.

Pentax 645D vs Pentax H90 top view buttons comparison

Pentax 645D vs Pentax H90 Sensor Comparison

Generally, its difficult to imagine the contrast between sensor measurements purely by reading through a spec sheet. The photograph underneath may offer you a stronger sense of the sensor dimensions in the 645D and H90.

As you can see, both of the cameras have got different megapixel count and different sensor measurements. The 645D due to its bigger sensor is going to make shooting shallow DOF easier and the Pentax 645D will resolve greater detail as a result of its extra 28MP. Higher resolution can also let you crop photographs much more aggressively.

Pentax 645D vs Pentax H90 sensor size comparison

Pentax 645D vs Pentax H90 Screen and ViewFinder

Pentax 645D vs Pentax H90 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645D Portrait photography information
Pentax H90 Portrait photography information
77
you can focus manually
fantastic MP (40MP)
great sensor size (Medium format)
delivers RAW formats
no liveview feature
27
focusing manually
no manual exposure
cannot use external flash
MP count low (12 megapixels)
very small sensor (1/2.3")
lacks RAW format
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Street Comparison

Pentax 645D Street photography features
Pentax H90 Street photography features
58
great sensor size (Medium format)
delivers RAW formats
environment sealing
screen is fixed
lack of image stabilization
56
image stabilization (Sensor-shift)
no articulating screen
very small sensor (1/2.3")
lacks RAW format
Photography Glossary

Sports Comparison

Pentax 645D as a Sports photography camera
Pentax H90 as a Sports photography camera
63
fantastic MP (40 megapixels)
great sensor size (Medium format)
environment sealing
supports phase detect AF
no liveview feature
painfully slow continuous shooting (1.0 frames/s)
lack of image stabilization
bad battery life (800 CIPA)
31
image stabilization (Sensor-shift)
comes with tracking autofocus
max frames per second very slow (1.0 fps)
no shutter priority
MP count low (12 megapixels)
very small sensor (1/2.3")
lacks phase detect autofocus
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Travel Comparison

Travel photography with Pentax 645D
Travel photography with Pentax H90
55
environment sealing
fantastic MP (40MP)
bad battery life (800 CIPA)
screen is not selfie friendly
57
flash built-in
relatively wide (28mm)
missing Timelapse function
MP count low (12MP)
display isn't selfie friendly
slow max aperture (f3.5)
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Landscape Comparison

Pentax 645D Landscape photography info
Pentax H90 Landscape photography info
72
you can focus manually
change lenses (Pentax 645AF2 mount)
pretty good screen size (3")
fantastic MP (40 megapixels)
great sensor size (Medium format)
no anti aliasing filter
delivers RAW formats
environment sealing
has dual storage slots
no liveview feature
lack of image stabilization
bad battery life (800 per charge)
36
focusing manually
relatively wide (28mm)
image stabilization (Sensor-shift)
fixed lens (fixed lens mount)
slow max aperture (f3.5)
small screen (2.7 inch)
no manual exposure
MP count low (12 megapixels)
very small sensor (1/2.3")
lacks RAW format
missing Timelapse function
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Vlogging Comparison

Pentax 645D as a Vlogging camera
Pentax H90 as a Vlogging camera
9
can't shoot video
28
relatively wide (28mm)
image stabilization (Sensor-shift)
slow max aperture (f3.5)
display isn't selfie friendly
video quality not great (1280 x 720 pxls)
missing external microphone support
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Pentax 645D vs Pentax H90 Specifications

Detailed spec comparison table for Pentax 645D and Pentax H90
 Pentax 645DPentax Optio H90
General Information
Company Pentax Pentax
Model Pentax 645D Pentax Optio H90
Category Pro DSLR Small Sensor Compact
Announced 2010-03-10 2010-01-25
Physical type Large SLR Compact
Sensor Information
Powered by Prime II Prime
Sensor type CCD CCD
Sensor size Medium format 1/2.3"
Sensor measurements 44 x 33mm 6.17 x 4.55mm
Sensor surface area 1,452.0mm² 28.1mm²
Sensor resolution 40MP 12MP
Anti aliasing filter
Aspect ratio 4:3 4:3 and 16:9
Peak resolution 7264 x 5440 4000 x 3000
Highest native ISO 1600 6400
Minimum native ISO 200 80
RAW data
Minimum enhanced ISO 100 -
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Autofocus tracking
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 11 9
Lens
Lens mounting type Pentax 645AF2 fixed lens
Lens focal range - 28-140mm (5.0x)
Maximal aperture - f/3.5-5.9
Macro focus distance - 10cm
Number of lenses 6 -
Focal length multiplier 0.8 5.8
Screen
Type of display Fixed Type Fixed Type
Display size 3 inch 2.7 inch
Resolution of display 921k dots 230k dots
Selfie friendly
Liveview
Touch capability
Display tech TFT Color LCD with wide-viewing angle and with AR coating -
Viewfinder Information
Viewfinder Optical (pentaprism) None
Viewfinder coverage 98 percent -
Viewfinder magnification 0.85x -
Features
Minimum shutter speed 30s 4s
Fastest shutter speed 1/4000s 1/2000s
Continuous shutter rate 1.0 frames per sec 1.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Change white balance
Image stabilization
Integrated flash
Flash range no built-in flash 4.00 m
Flash modes Auto, On, Off, Red-eye, Slow Sync, Rear Curtain Auto, On, Off, Red-eye, Soft
Hot shoe
AE bracketing
White balance bracketing
Fastest flash synchronize 1/125s -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions - 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Highest video resolution None 1280x720
Video data format - Motion JPEG
Microphone support
Headphone support
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1480 grams (3.26 lb) 153 grams (0.34 lb)
Dimensions 156 x 117 x 119mm (6.1" x 4.6" x 4.7") 101 x 65 x 28mm (4.0" x 2.6" x 1.1")
DXO scores
DXO Overall score 82 not tested
DXO Color Depth score 24.6 not tested
DXO Dynamic range score 12.6 not tested
DXO Low light score 1262 not tested
Other
Battery life 800 photos -
Form of battery Battery Pack -
Battery model D-LI90 D-LI68
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC SD/SDHC, Internal
Card slots 2 One
Price at release $4,000 $150