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Sigma SD15 vs Sony A33

Portability
59
Imaging
44
Features
45
Overall
44
Sigma SD15 front
 
Sony SLT-A33 front
Portability
67
Imaging
54
Features
80
Overall
64

Sigma SD15 vs Sony A33 Key Specs

Sigma SD15
(Full Review)
  • 5MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 1600 (Push to 3200)
  • No Video
  • Sigma SA Mount
  • 750g - 144 x 107 x 81mm
  • Released February 2010
  • Old Model is Sigma SD14
Sony A33
(Full Review)
  • 14MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 12800 (Push to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 500g - 124 x 92 x 85mm
  • Introduced August 2010
  • Newer Model is Sony A35
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Sigma SD15 vs Sony A33 Overview

The following is a extended analysis of the Sigma SD15 vs Sony A33, former is a Advanced DSLR while the latter is a Entry-Level DSLR by companies Sigma and Sony. There is a considerable difference between the image resolutions of the SD15 (5MP) and A33 (14MP) but they enjoy the exact same sensor sizing (APS-C).

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The SD15 was revealed 6 months earlier than the A33 and they are of a similar age. Each of the cameras come with different body type with the Sigma SD15 being a Mid-size SLR camera and the Sony A33 being a Compact SLR camera.

Before getting straight into a comprehensive comparison, below is a short summary of how the SD15 scores against the A33 in regards to portability, imaging, features and an overall mark.

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Reasons to pick Sigma SD15 over the Sony A33

 SD15 A33 

Reasons to pick Sony A33 over the Sigma SD15

 A33 SD15 
Screen typeFully ArticulatedFixed Fully Articulating screen
Screen resolution921k460kSharper screen (+461k dot)
Selfie screen Easy selfies

Common features in the Sigma SD15 and Sony A33

 SD15 A33 
IntroducedFebruary 2010August 2010Similar age
Manually focus More exact focus
Screen dimension3"3"Identical screen measurement
Touch screen Absent Touch screen

Sigma SD15 vs Sony A33 Physical Comparison

If you're planning to travel with your camera regularly, you are going to need to consider its weight and proportions. The Sigma SD15 provides exterior dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") having a weight of 750 grams (1.65 lbs) whilst the Sony A33 has measurements of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") and a weight of 500 grams (1.10 lbs).

Examine the Sigma SD15 vs Sony A33 in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will differ depending on the lens you are utilising at that time. Following is the front view over all size comparison of the SD15 versus the A33.

Sigma SD15 vs Sony A33 size comparison

Taking into consideration size and weight, the portability rating of the SD15 and A33 is 59 and 67 respectively.

Sigma SD15 vs Sony A33 top view buttons comparison

Sigma SD15 vs Sony A33 Sensor Comparison

Generally, it can be tough to see the difference between sensor dimensions purely by going over specifications. The picture here will help offer you a better sense of the sensor dimensions in the SD15 and A33.

Plainly, both of those cameras have got the exact same sensor measurements albeit not the same megapixels. You can expect the Sony A33 to deliver more detail because of its extra 9 Megapixels. Higher resolution will enable you to crop shots much more aggressively.

Sigma SD15 vs Sony A33 sensor size comparison

Sigma SD15 vs Sony A33 Screen and ViewFinder

Sigma SD15 vs Sony A33 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Sigma SD15 Portrait photography details
Sony A33 Portrait photography details
50
has manual focus
sensor size is decent (APS-C)
saves RAW files
doesn't have liveview
megapixel count low (5MP)
72
focusing manually
MP count good (14 megapixels)
good sensor size (APS-C)
has face detect focusing
delivers RAW files
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Street Comparison

Sigma SD15 as a Street photography camera
Sony A33 as a Street photography camera
52
sensor size is decent (APS-C)
saves RAW files
no articulating screen
does not have image stabilization
76
screen can move to multiple angles
built in image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
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Sports Comparison

Sigma SD15 as a Sports photography camera
Sony A33 as a Sports photography camera
38
sensor size is decent (APS-C)
sensor has phase detect AF
doesn't have liveview
slow continuous shooting (3.0 frames per second)
does not have image stabilization
megapixel count low (5MP)
67
built in image stabilization (Sensor based)
MP count good (14 megapixels)
good sensor size (APS-C)
supports phase detect AF
bad battery life (340 CIPA)
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Travel Comparison

Sigma SD15 Travel photography features
Sony A33 Travel photography features
42
built-in flash
no Timelapse recording
megapixel count low (5 megapixels)
screen isn't selfie friendly
61
MP count good (14MP)
built-in flash
display is selfie friendly
missing Time Lapse recording
bad battery life (340 shots)
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Landscape Comparison

Sigma SD15 Landscape photography highlights
Sony A33 Landscape photography highlights
51
has manual focus
swap lenses (Sigma SA mount)
decent sized screen (3 inches)
sensor size is decent (APS-C)
saves RAW files
doesn't have liveview
does not have image stabilization
megapixel count low (5 megapixels)
no Timelapse recording
67
focusing manually
switch lenses (Sony/Minolta Alpha mount)
screen size is good (3")
built in image stabilization (Sensor based)
MP count good (14MP)
good sensor size (APS-C)
delivers RAW files
bad battery life (340 CIPA)
missing Time Lapse recording
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Vlogging Comparison

Sigma SD15 Vlogging info
Sony A33 Vlogging info
9
lack of video recording
77
display is selfie friendly
built in image stabilization (Sensor based)
has face detect focusing
high res video (1920 x 1080 pixels)
comes with mic socket
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Sigma SD15 vs Sony A33 Specifications

Detailed spec comparison table for Sigma SD15 and Sony A33
 Sigma SD15Sony SLT-A33
General Information
Manufacturer Sigma Sony
Model Sigma SD15 Sony SLT-A33
Type Advanced DSLR Entry-Level DSLR
Released 2010-02-20 2010-08-24
Physical type Mid-size SLR Compact SLR
Sensor Information
Processor Chip True II Bionz
Sensor type CMOS (Foveon X3) CMOS
Sensor size APS-C APS-C
Sensor dimensions 20.7 x 13.8mm 23.5 x 15.6mm
Sensor area 285.7mm² 366.6mm²
Sensor resolution 5MP 14MP
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Highest Possible resolution 2640 x 1760 4592 x 3056
Maximum native ISO 1600 12800
Maximum enhanced ISO 3200 25600
Minimum native ISO 100 100
RAW files
Minimum enhanced ISO 50 -
Autofocusing
Manual focus
AF touch
AF continuous
Single AF
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points - 15
Cross focus points - 3
Lens
Lens mounting type Sigma SA Sony/Minolta Alpha
Total lenses 76 143
Crop factor 1.7 1.5
Screen
Display type Fixed Type Fully Articulated
Display sizing 3 inch 3 inch
Resolution of display 460 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch display
Viewfinder Information
Viewfinder type Optical (pentaprism) Electronic
Viewfinder resolution - 1,150 thousand dots
Viewfinder coverage 96% 100%
Viewfinder magnification 0.6x 0.73x
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/4000 seconds 1/4000 seconds
Continuous shutter rate 3.0fps 7.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash range - 10.00 m (@ ISO 100)
Flash settings - Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
AE bracketing
WB bracketing
Fastest flash synchronize 1/180 seconds 1/160 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions - 1920 x 1080 (60, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Maximum video resolution None 1920x1080
Video format - MPEG-4, AVCHD, H.264
Mic port
Headphone port
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
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 750g (1.65 lb) 500g (1.10 lb)
Dimensions 144 x 107 x 81mm (5.7" x 4.2" x 3.2") 124 x 92 x 85mm (4.9" x 3.6" x 3.3")
DXO scores
DXO Overall score not tested 70
DXO Color Depth score not tested 22.8
DXO Dynamic range score not tested 12.6
DXO Low light score not tested 591
Other
Battery life - 340 shots
Battery type - Battery Pack
Battery model - NP-FW50
Self timer Yes (10 sec) Yes (2 or 10 sec)
Time lapse recording
Type of storage SD/SDHC card SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots 1 1
Price at release $1,500 $230