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Casio EX-Z550 vs Sigma SD15

Portability
95
Imaging
36
Features
25
Overall
31
Casio Exilim EX-Z550 front
 
Sigma SD15 front
Portability
59
Imaging
44
Features
45
Overall
44

Casio EX-Z550 vs Sigma SD15 Key Specs

Casio EX-Z550
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 64 - 3200
  • Sensor-shift Image Stabilization
  • 640 x 480 video
  • 26-104mm (F2.6-5.9) lens
  • 143g - 99 x 53 x 20mm
  • Introduced January 2010
Sigma SD15
(Full Review)
  • 5MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 1600 (Increase to 3200)
  • No Video
  • Sigma SA Mount
  • 750g - 144 x 107 x 81mm
  • Released February 2010
  • Earlier Model is Sigma SD14
Photography Glossary

Casio EX-Z550 vs Sigma SD15 Overview

In this article, we are evaluating the Casio EX-Z550 versus Sigma SD15, former being a Ultracompact while the other is a Advanced DSLR by brands Casio and Sigma. There is a noticeable difference among the sensor resolutions of the EX-Z550 (14MP) and SD15 (5MP) and the EX-Z550 (1/2.3") and SD15 (APS-C) enjoy totally different sensor measurements.

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The EX-Z550 was brought out around the same time to the SD15 so they are both of a similar age. Both of these cameras offer different body type with the Casio EX-Z550 being a Ultracompact camera and the Sigma SD15 being a Mid-size SLR camera.

Before getting straight into a more detailed comparison, below is a quick overview of how the EX-Z550 matches up against the SD15 when considering portability, imaging, features and an overall grade.

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Reasons to pick Casio EX-Z550 over the Sigma SD15

 EX-Z550 SD15 

Reasons to pick Sigma SD15 over the Casio EX-Z550

 SD15 EX-Z550 
Display sizing3"2.7"Larger display (+0.3")
Display resolution460k230kSharper display (+230k dot)

Common features in the Casio EX-Z550 and Sigma SD15

 EX-Z550 SD15 
ReleasedJanuary 2010February 2010Same age
Focus manually More precise focusing
Display typeFixed Fixed Fixed display
Selfie screen Absent selfie screen
Touch display Absent Touch display

Casio EX-Z550 vs Sigma SD15 Physical Comparison

For those who are aiming to lug around your camera, you are going to need to factor in its weight and dimensions. The Casio EX-Z550 comes with external measurements of 99mm x 53mm x 20mm (3.9" x 2.1" x 0.8") along with a weight of 143 grams (0.32 lbs) whilst the Sigma SD15 has dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") and a weight of 750 grams (1.65 lbs).

Take a look at the Casio EX-Z550 versus Sigma SD15 in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an ILC will differ based on the lens you are working with at the time. Here is the front view dimension comparison of the EX-Z550 compared to the SD15.

Casio EX-Z550 vs Sigma SD15 size comparison

Using size and weight, the portability grade of the EX-Z550 and SD15 is 95 and 59 respectively.

Casio EX-Z550 vs Sigma SD15 top view buttons comparison

Casio EX-Z550 vs Sigma SD15 Sensor Comparison

Often, it's difficult to visualise the difference in sensor measurements purely by looking through specifications. The photograph here may give you a more clear sense of the sensor sizing in the EX-Z550 and SD15.

To sum up, the two cameras enjoy different megapixels and different sensor measurements. The EX-Z550 because of its smaller sensor will make achieving shallow depth of field tougher and the Casio EX-Z550 will provide you with greater detail having its extra 9MP. Greater resolution can also allow you to crop pics far more aggressively.

Casio EX-Z550 vs Sigma SD15 sensor size comparison

Casio EX-Z550 vs Sigma SD15 Screen and ViewFinder

Casio EX-Z550 vs Sigma SD15 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Casio EX-Z550 Portrait photography highlights
Sigma SD15 Portrait photography highlights
34
focusing manually
MP count decent (14MP)
manual mode not available
external flash not possible
small sensor (1/2.3")
has no RAW support
50
focusing manually
nice sensor size (APS-C)
exports RAW files
doesn't have liveview
MP count low (5 megapixels)
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Street Comparison

Street photography with Casio EX-Z550
Street photography with Sigma SD15
57
built in image stabilization (Sensor-shift)
screen is fixed
small sensor (1/2.3")
has no RAW support
52
nice sensor size (APS-C)
exports RAW files
screen does not articulate
no image stabilization
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Sports Comparison

Casio EX-Z550 Sports photography highlights
Sigma SD15 Sports photography highlights
38
built in image stabilization (Sensor-shift)
MP count decent (14 megapixels)
lack of shutter priority mode
small sensor (1/2.3")
has no phase detect auto focus
38
nice sensor size (APS-C)
sensor has phase detect auto focus
doesn't have liveview
continuous shooting slow (3.0 frames per second)
no image stabilization
MP count low (5 megapixels)
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Travel Comparison

Travel photography with Casio EX-Z550
Travel photography with Sigma SD15
65
MP count decent (14 megapixels)
flash built-in
rather wide (26mm)
does not have Timelapse function
doesn't offer selfie friendly screen
sluggish maximum aperture (f2.6)
42
built-in flash
does not have Timelapse function
MP count low (5 megapixels)
doesn't have selfie friendly display
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Landscape Comparison

Casio EX-Z550 Landscape photography factors
Sigma SD15 Landscape photography factors
42
focusing manually
rather wide (26mm)
built in image stabilization (Sensor-shift)
MP count decent (14MP)
fixed lens (fixed lens mount)
sluggish maximum aperture (f2.6)
screen is small (2.7 inch)
manual mode not available
small sensor (1/2.3")
has no RAW support
does not have Timelapse function
51
focusing manually
switch lenses (Sigma SA mount)
screen size is good (3")
nice sensor size (APS-C)
exports RAW files
doesn't have liveview
no image stabilization
MP count low (5MP)
does not have Timelapse function
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Vlogging Comparison

Casio EX-Z550 Vlogging features
Sigma SD15 Vlogging features
29
rather wide (26mm)
built in image stabilization (Sensor-shift)
sluggish maximum aperture (f2.6)
doesn't offer selfie friendly screen
low quality video (640 x 480 pixels)
does not have microphone support
9
can't record video
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Casio EX-Z550 vs Sigma SD15 Specifications

Detailed spec comparison table for Casio EX-Z550 and Sigma SD15
 Casio Exilim EX-Z550Sigma SD15
General Information
Brand Name Casio Sigma
Model Casio Exilim EX-Z550 Sigma SD15
Class Ultracompact Advanced DSLR
Introduced 2010-01-06 2010-02-20
Body design Ultracompact 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 14 megapixel 5 megapixel
Anti aliasing filter
Aspect ratio 4:3, 3:2 and 16:9 3:2
Full resolution 4320 x 3240 2640 x 1760
Max native ISO 3200 1600
Max boosted ISO - 3200
Min native ISO 64 100
RAW support
Min boosted ISO - 50
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Autofocus tracking
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Lens
Lens mounting type fixed lens Sigma SA
Lens focal range 26-104mm (4.0x) -
Max aperture f/2.6-5.9 -
Amount of lenses - 76
Focal length multiplier 5.8 1.7
Screen
Range of display Fixed Type Fixed Type
Display diagonal 2.7 inches 3 inches
Resolution of display 230 thousand dot 460 thousand dot
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder type None Optical (pentaprism)
Viewfinder coverage - 96%
Viewfinder magnification - 0.6x
Features
Lowest shutter speed 4s 30s
Highest shutter speed 1/2000s 1/4000s
Continuous shooting speed - 3.0 frames/s
Shutter priority
Aperture priority
Manual exposure
Exposure compensation - Yes
Custom white balance
Image stabilization
Integrated flash
Flash options Auto, flash off, flash on, red eye reduction -
Hot shoe
AEB
WB bracketing
Highest flash sync - 1/180s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 1280 × 720, 640 x 480, 320 x 240 -
Max video resolution 640x480 None
Video format Motion JPEG -
Microphone jack
Headphone jack
Connectivity
Wireless Eye-Fi Connected None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 143g (0.32 lb) 750g (1.65 lb)
Dimensions 99 x 53 x 20mm (3.9" x 2.1" x 0.8") 144 x 107 x 81mm (5.7" x 4.2" x 3.2")
DXO scores
DXO All around 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
Self timer Yes (10 seconds, 2 seconds, Triple Self-timer) Yes (10 sec)
Time lapse recording
Storage media SD/SDHC card, Internal SD/SDHC card
Storage slots 1 1
Price at launch $149 $1,500