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Pentax X70 vs Sigma SD15

Portability
71
Imaging
34
Features
34
Overall
34
Pentax X70 front
 
Sigma SD15 front
Portability
59
Imaging
44
Features
45
Overall
44

Pentax X70 vs Sigma SD15 Key Specs

Pentax X70
(Full Review)
  • 12MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • ISO 50 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 26-624mm (F2.8-5.0) lens
  • 410g - 110 x 83 x 90mm
  • Released March 2009
Sigma SD15
(Full Review)
  • 5MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 1600 (Increase to 3200)
  • No Video
  • Sigma SA Mount
  • 750g - 144 x 107 x 81mm
  • Introduced February 2010
  • Superseded the Sigma SD14
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Pentax X70 vs Sigma SD15 Overview

Below is a in depth overview of the Pentax X70 vs Sigma SD15, former being a Small Sensor Superzoom while the latter is a Advanced DSLR by competitors Pentax and Sigma. There is a considerable difference among the sensor resolutions of the X70 (12MP) and SD15 (5MP) and the X70 (1/2.3") and SD15 (APS-C) feature totally different sensor measurements.

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The X70 was manufactured 11 months before the SD15 and they are both of a similar age. Each of these cameras offer different body type with the Pentax X70 being a SLR-like (bridge) camera and the Sigma SD15 being a Mid-size SLR camera.

Before getting through a in-depth comparison, below is a quick view of how the X70 matches up vs the SD15 in relation to portability, imaging, features and an overall grade.

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Reasons to pick Pentax X70 over the Sigma SD15

 X70 SD15 

Reasons to pick Sigma SD15 over the Pentax X70

 SD15 X70 
IntroducedFebruary 2010March 2009More recent by 11 months
Screen sizing3"2.7"Bigger screen (+0.3")
Screen resolution460k230kClearer screen (+230k dot)

Common features in the Pentax X70 and Sigma SD15

 X70 SD15 
Manually focus More accurate focusing
Screen typeFixed Fixed Fixed screen
Selfie screen No selfie screen
Touch friendly screen No Touch friendly screen

Pentax X70 vs Sigma SD15 Physical Comparison

For anybody who is going to lug around your camera frequently, you need to think about its weight and measurements. The Pentax X70 has outer dimensions of 110mm x 83mm x 90mm (4.3" x 3.3" x 3.5") with a weight of 410 grams (0.90 lbs) and the Sigma SD15 has proportions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") accompanied by a weight of 750 grams (1.65 lbs).

Check the Pentax X70 vs Sigma SD15 in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will differ dependant on the lens you are utilising during that time. Following is the front view measurement comparison of the X70 versus the SD15.

Pentax X70 vs Sigma SD15 size comparison

Taking into consideration size and weight, the portability score of the X70 and SD15 is 71 and 59 respectively.

Pentax X70 vs Sigma SD15 top view buttons comparison

Pentax X70 vs Sigma SD15 Sensor Comparison

Usually, it can be tough to see the contrast in sensor measurements purely by checking out a spec sheet. The graphic here may provide you a more clear sense of the sensor dimensions in the X70 and SD15.

Clearly, both the cameras enjoy different megapixels and different sensor measurements. The X70 because of its smaller sensor will make getting shallower depth of field more challenging and the Pentax X70 will produce greater detail due to its extra 7 Megapixels. Higher resolution will let you crop shots far more aggressively. The older X70 will be disadvantaged in sensor technology.

Pentax X70 vs Sigma SD15 sensor size comparison

Pentax X70 vs Sigma SD15 Screen and ViewFinder

Pentax X70 vs Sigma SD15 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax X70 Portrait photography advice
Sigma SD15 Portrait photography advice
28
focusing manually
cannot use external flash
megapixel count low (12MP)
very small sensor size (1/2.3")
lacks RAW support
50
you can focus manually
good sensor size (APS-C)
supports RAW files
no liveview
MP count low (5 megapixels)
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Street Comparison

Street photography with Pentax X70
Street photography with Sigma SD15
46
has image stabilization (Sensor-shift)
screen does not articulate
very small sensor size (1/2.3")
lacks RAW support
52
good sensor size (APS-C)
supports RAW files
fixed screen
no image stabilization
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Sports Comparison

Sports photography with Pentax X70
Sports photography with Sigma SD15
50
great zoom range (26-624mm 24.0 x zoom)
has image stabilization (Sensor-shift)
offers tracking autofocus
has phase detect AF
megapixel count low (12 megapixels)
very small sensor size (1/2.3")
38
good sensor size (APS-C)
comes with phase detect autofocus
no liveview
painfully slow continuous shooting (3.0 frames/s)
no image stabilization
MP count low (5MP)
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Travel Comparison

Pentax X70 Travel photography info
Sigma SD15 Travel photography info
52
built-in flash
quite wide (26mm)
very long zoom (624mm)
lack of Time Lapse function
megapixel count low (12 megapixels)
display isn't selfie friendly
sluggish maximum aperture (f2.8)
42
flash built-in
lack of Timelapse function
MP count low (5 megapixels)
screen isn't selfie friendly
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Landscape Comparison

Pentax X70 as a Landscape photography camera
Sigma SD15 as a Landscape photography camera
35
focusing manually
quite wide (26mm)
has image stabilization (Sensor-shift)
cannot swap lens (fixed lens mount)
sluggish maximum aperture (f2.8)
screen is somewhat small (2.7 inches)
megapixel count low (12MP)
very small sensor size (1/2.3")
lacks RAW support
lack of Time Lapse function
51
you can focus manually
change lenses (Sigma SA mount)
nice screen size (3")
good sensor size (APS-C)
supports RAW files
no liveview
no image stabilization
MP count low (5 megapixels)
lack of Timelapse function
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Vlogging Comparison

Pentax X70 Vlogging details
Sigma SD15 Vlogging details
24
quite wide (26mm)
has image stabilization (Sensor-shift)
sluggish maximum aperture (f2.8)
display isn't selfie friendly
video resolution low (1280 x 720 resolution)
lack of external mic jack
9
can't record video
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Pentax X70 vs Sigma SD15 Specifications

Detailed spec comparison table for Pentax X70 and Sigma SD15
 Pentax X70Sigma SD15
General Information
Make Pentax Sigma
Model Pentax X70 Sigma SD15
Type Small Sensor Superzoom Advanced DSLR
Released 2009-03-02 2010-02-20
Body design SLR-like (bridge) Mid-size SLR
Sensor Information
Chip - True II
Sensor type CCD CMOS (Foveon X3)
Sensor size 1/2.3" APS-C
Sensor measurements 6.17 x 4.55mm 20.7 x 13.8mm
Sensor surface area 28.1mm² 285.7mm²
Sensor resolution 12MP 5MP
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Highest Possible resolution 4000 x 3000 2640 x 1760
Maximum native ISO 6400 1600
Maximum enhanced ISO - 3200
Min native ISO 50 100
RAW pictures
Min enhanced ISO - 50
Autofocusing
Focus manually
Touch focus
Continuous AF
AF single
Tracking AF
AF selectice
AF center weighted
AF multi area
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 9 -
Lens
Lens mount fixed lens Sigma SA
Lens focal range 26-624mm (24.0x) -
Largest aperture f/2.8-5.0 -
Macro focus distance 10cm -
Amount of lenses - 76
Crop factor 5.8 1.7
Screen
Screen type Fixed Type Fixed Type
Screen sizing 2.7" 3"
Resolution of screen 230k dot 460k dot
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder Electronic Optical (pentaprism)
Viewfinder coverage - 96 percent
Viewfinder magnification - 0.6x
Features
Min shutter speed 4s 30s
Max shutter speed 1/4000s 1/4000s
Continuous shutter speed - 3.0 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set WB
Image stabilization
Inbuilt flash
Flash range 9.10 m -
External flash
Auto exposure bracketing
White balance bracketing
Max flash sync - 1/180s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1280 x 720 (30 fps), 848 x 480 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps) -
Maximum video resolution 1280x720 None
Video data format Motion JPEG -
Microphone input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 410 gr (0.90 lb) 750 gr (1.65 lb)
Dimensions 110 x 83 x 90mm (4.3" x 3.3" x 3.5") 144 x 107 x 81mm (5.7" x 4.2" x 3.2")
DXO scores
DXO Overall score not tested not tested
DXO Color Depth score not tested not tested
DXO Dynamic range score not tested not tested
DXO Low light score not tested not tested
Other
Battery model D-LI92 -
Self timer Yes (2 or 10 sec) Yes (10 sec)
Time lapse recording
Type of storage SD/SDHC, Internal SD/SDHC card
Storage slots Single Single
Pricing at release $200 $1,500