Samsung ST45 vs Pentax Optio A40

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Main
Model
Price

launch
Announced
Body type
Camera subcategory
Sensor
Effective pixels
Max resolution
Sensor size
Sensor type
Image ratio w:h
Other resolutions
Sensor photo detectors
Image
ISO
Uncompressed format
White balance presets
Custom white balance
Image stabilization
JPEG quality levels
Photography features
Aperture priority
Shutter priority
Built-in flash
Flash modes
Self-timer
Exposure compensation
Minimum shutter speed
Maximum shutter speed
Flash range
External flash
Screen / viewfinder
Screen size
Screen dots
Touch screen
Live view
Viewfinder type
Videography features
Resolutions
File Format
Optics & Focus
Focal length (equiv.)
Optical zoom
Maximum aperture
Autofocus
Digital zoom
Manual focus
Normal focus range
Macro focus range
Number of focus points
Physical
Weight (inc. batteries)
Dimensions
Environmentally sealed
Battery
Battery details
Storage
Storage types
Storage included
Connectivity
USB
Remote control
HDMI
Other features
Orientation sensor
Timelapse recording
Samples
Videos

Main
Model
Samsung ST45
Price

Main
Model
Pentax Optio A40
Price

launch
Announced
Jan 8, 2008
Body type
Camera subcategory
Compact
Sensor
Effective pixels
12 megapixels
Max resolution
4000 x 3000
Sensor size
1/2.33" (6.08 x 4.56 mm)
Sensor type
CCD
Image ratio w:h
16:9, 4:3, 3:2
Other resolutions
3984 x 2656, 3968 x 2232, 3264 x 2448, 2592 x 1944, 2048, 1536, 1024 x 768
Sensor photo detectors
12 megapixels
Image
ISO
Auto, 80, 100, 200, 400, 800, 1600, 3200 (At 3M Size)
Uncompressed format
No
White balance presets
—
Custom white balance
—
Image stabilization
—
JPEG quality levels
—
Photography features
Aperture priority
No
Shutter priority
No
Built-in flash
Yes
Flash modes
Auto, Auto & Red-eye reduction, Fill-in flash, Slow sync, Flash off, Red eye fix
Self-timer
Yes (2, 10 or Custom)
Exposure compensation
±2 (at 1/3 EV steps)
Minimum shutter speed
—
Maximum shutter speed
—
Flash range
—
External flash
—
Screen / viewfinder
Screen size
2.7″
Screen dots
230,000
Touch screen
No
Live view
Yes
Viewfinder type
None
Videography features
Resolutions
800 x 592 (20fps) , 640x480 (30fps & 15fps) , 320x240 (30fps & 15fps)
File Format
—
Optics & Focus
Focal length (equiv.)
35–105 mm
Optical zoom
3×
Maximum aperture
F3–5.6
Autofocus
- Contrast Detect (sensor)
- Multi-area
- Center
- Tracking
- Single
- Face Detection
- Live View
Digital zoom
Yes (5x)
Manual focus
No
Normal focus range
80 cm (31.5″)
Macro focus range
10 cm (3.94″)
Number of focus points
—
Physical
Weight (inc. batteries)
219 g (0.48 lb / 7.72 oz)
Dimensions
105 x 61 x 37 mm (4.13 x 2.4 x 1.46″)
Environmentally sealed
No
Battery
—
Battery details
—
Storage
Storage types
SD/MMC/SDHC card
Storage included
—
Connectivity
USB
USB 2.0 (480 Mbit/sec)
Remote control
Yes
HDMI
—
Other features
Orientation sensor
Yes
Timelapse recording
No
————
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launch
Announced
Oct 1, 2007
Body type
Camera subcategory
Compact
Sensor
Effective pixels
12 megapixels
Max resolution
4000 x 3000
Sensor size
1/1.7" (7.44 x 5.58 mm)
Sensor type
CCD
Image ratio w:h
4:3
Other resolutions
3648 x 2736, 3072 x 2736, 2592 x 1944, 2048 x 1536, 1600 x 1200, 1024 x 768, 640 x 480
Sensor photo detectors
—
Image
ISO
Auto, 64, 100, 200, 400, 800, 1600
Uncompressed format
No
White balance presets
4
Custom white balance
Yes
Image stabilization
Sensor-shift
JPEG quality levels
Normal, Fine, Superfine
Photography features
Aperture priority
No
Shutter priority
No
Built-in flash
Yes
Flash modes
Auto, On, Off, Soft, Red-eye reduction
Self-timer
Yes (2 or 10 sec)
Exposure compensation
±2 (at 1/3 EV steps)
Minimum shutter speed
4 sec
Maximum shutter speed
1/2000 sec
Flash range
7.10 m (Auto ISO)
External flash
No
Screen / viewfinder
Screen size
2.5″
Screen dots
232,000
Touch screen
No
Live view
Yes
Viewfinder type
None
Videography features
Resolutions
640 x 480, 320 x 240, 30 fps, MPEG-4
File Format
MPEG-4
Optics & Focus
Focal length (equiv.)
37–111 mm
Optical zoom
3×
Maximum aperture
F2.8–5.4
Autofocus
- Contrast Detect (sensor)
- Multi-area
- Single
- Live View
Digital zoom
Yes (6 x)
Manual focus
No
Normal focus range
35 cm (13.78″)
Macro focus range
6 cm (2.36″)
Number of focus points
5
Physical
Weight (inc. batteries)
170 g (0.37 lb / 6.00 oz)
Dimensions
91 x 57 x 24 mm (3.58 x 2.24 x 0.94″)
Environmentally sealed
No
Battery
Battery Pack
Battery details
Lithium-Ion rechargeable
Storage
Storage types
SD/SDHC card, Internal
Storage included
21 MB Internal
Connectivity
USB
USB 2.0 (480 Mbit/sec)
Remote control
Yes (Optional)
HDMI
No
Other features
Orientation sensor
No
Timelapse recording
No
————
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