
Review based on a production Pentax Optio A20
As is the nature of this business the Option A20 replaced the A10 only seven months after that model had been announced (and is itself about to be replaced by the further upgraded A30). The |A10 was one of the disappointments of last year, offering typical Pentax high quality output and wealth of features but with serious performance issues that made using it frustrating to say the least. The A20 has a new ASIC (processor), two million more pixels (10.0 MP 1/1.8-inch sensor) and a handful of new features. We decided to find out if Pentax has solved the problems that stopped the A10 from being a really great camera, starting as ever with the headline features:
- 10.0 effective megapixels
- High-performance smc PENTAX 3x zoom lens
- New ASIC
- SR (Shake Reduction)
- Face Recognition AF & AE
- Auto-tracking AF continuously focuses on a moving subject
- High-quality movies with an anti-shake function
- Auto Picture mode automatically determines the best settings for the shooting conditions
- ISO 64-800
- Shutter Priority, Manual and numerous scene modes
- SDHC support
- Post-shot red-eye removal
Pentax Optio A20 Key specifications
| Street Price |
• US: $270
• UK £150 |
| Body Material |
Metal |
| Sensor |
• 1/1.8 ” Type CCD
• 10.37 million pixels total
• 10.0 million effective pixels |
| Image sizes |
• 3648 x 2736
• 3072 x 2304
• 2592 x 1944
• 2048 x 1536
• 1600 x 1200
• 1024 x 768
• 640 x 480 |
| Movie clips |
• 640 x 480 @ 30fps
• 320 x 240 @ 30fps |
| File formats |
• JPEG Exif v2.2
• DCF
• DPOF
• PRINT Image Matching III
• AVI MPEG-4 |
| Lens |
• 38-114mm (35mm equiv)
• F2.8-5.4 |
| Image stabilization |
• SR (Shake Reduction)
• Movie anti-shake |
| Conversion lenses |
No |
| Digital zoom |
up to 4x |
| Focus |
TTL contrast detection AF |
| AF area modes |
• 5-point multi AF
• Spot AF
• Tracking AF switchable |
| AF assist lamp |
Yes |
| Focus distance |
• Normal: 0.35m – infinity
• Macro: 0.12m – 0.4m (at full wide-angle setting to 11.5mm)
• Supermacro: 0.06m – 0.15m (at full wide-angle setting) |
| Metering |
• TTL metering
• Multi-segment
• Center-weighted
• Spot |
| ISO sensitivity |
• Auto
• ISO 64
• ISO 100
• ISO 200
• ISO 400
• ISO 800 |
| Exposure compensation |
+/- 2EV in 1/3 steps |
| Shutter speed |
1/2000 sec to 4 sec |
| Aperture |
F2.8-5.4 |
| Modes |
• One shot
• Self timer
• Continuous
• Remote Control |
| Scene modes |
• Auto picture
• Program
• Night scene
• Movie
• Voice recording
• Landscape
• Flower
• Portrait
• Kids
• Blur reduction
• Surf & snow
• Sport
• Pet
• Text
• Food
• Frame composite
• Shutter Priority
• Manual |
| White balance |
• Auto
• Daylight
• Tungsten light
• Fluorescent light
• Manual |
| Self timer |
2 or 10 secs |
| Continuous shooting |
n/a |
| Flash |
• Auto
• Flash On / Off
• Soft Flash
• Red-eye reduction
• Range: Wide: approx 0.06m – 7.1m / Tele: approx 0.35m – 3.5m |
| Viewfinder |
No |
| LCD monitor |
• 2.5-inch TFT Low-reflective type
• 232,000 pixels |
| Connectivity |
• NTSC / PAL
• USB 2.0 Hi-speed
• AV out
• DC in |
| Print compliance |
PictBridge |
| Storage |
• 22MB built-in memory
• SD / SDHC card compatible |
| Power |
• Rechargeable D-L18 Lithium-ion battery
• Optional AC adapter |
| Weight (no batt) |
125 g (4.4 oz) |
| Dimensions |
88.5 x 54.5 x 23 mm (3.5 x 2.1 x 0 |

Announced just before PMA in January 2007 the SP-550UZ is the first serious attempt by Olympus to take back some ground in the super zoom sector, a sector it almost single-handedly created back in 2000 with the legendary C-2100UZ, but has since struggled to make a mark in. The SP-550UZ is a significant step up from the previous models in the ‘SP’ range (including the current SP-510UZ), offering 7MP resolution, image stabilization (CCD-shift) and an astounding 28-500mm (equiv.) 18x optical zoom range. The ‘super zoom’ market is an increasingly crowded and competitive one, and the SP-550UZ goes head to head with popular and well-regarded models such as the Sony H5, Canon S3 IS and Panasonic FZ8. Rarely has a camera caused so much interest based on its specification alone… so can the SP-550UZ live up to the hype? Let’s find out, starting as ever with the headline specifications:
- 18x wide optical zoom (equivalent to 28-504mm on a 35mm camera) 1:2.8-4.5
- Dual Image Stabilization
- 7.1 Megapixels
- 6.4cm/2.5” LCD with 230,000 pixels
- High burst rate (up to 15fps in 1.2 Megapixel mode )
- Super Macro mode (from as close as 1cm)
- P/A/S/M exposure modes
- RAW mode
- BrightCapture Technology for better low light photography – also available in movie mode
- 23 scene modes (including Portrait, Sports, Night Scene)
- 25 languages on board
- Internal memory plus xD-Picture Card slot
- Supplied with Olympus Master software and four AA batteries
Side by side

Although not a small camera the SP-550UZ is very similar in size and weight to the Canon S3 IS and Panasonic Lumix FZ8 (also the Sony H2/H5, not shown). In fact the only cameras in this class that are significantly different in size are the considerably larger Fujifilm S6000 and the Panasonic FZ50 (not shown).
Olympus SP-550UZ specifications
| Street Price |
• US: $490
• UK: £300 |
| Body Material |
Metal and plastic |
| Sensor |
• 1/2.5″ Primary color filter (RGB) Type CCD
• 7.4 million pixels total
• 7.1 million effective pixels |
| Image sizes |
• 3072 x 2304
• 3072 x 2048 (3:2)
• 2560 x 1920
• 2304 x 1728
• 2048 x 1536
• 1600 x 1200
• 1280 x 960
• 1024 x 768
• 640 x 480 |
| Movie clips |
• 640 x 480 30fps
• 320 x 240 30fps
• Up to capacity of card (H cards only) |
| File formats |
• Still: JPEG (EXIF 2.21), RAW
• Movie: Quicktime Motion JPEG (AVI)
• Sound:Wave format |
| Lens |
• 4.7-84.2mm (28-504 35 mm equiv)
• 14 Lenses / 11 groups
• Four Aspherical glass elements
• 18x optical zoom
• F2.8-4.5 |
| Image stabilization |
Yes (CCD Shift) |
| Conversion lenses |
Yes (with CLA-10 adaptor) |
| Digital zoom |
Up to 5.6x |
| Focus |
• TTL iESP auto focus with contrast detection
• Predictive AF |
| AF area modes |
• iESP multi-pattern
• 143 area selectable spot
• Manual focus |
| AF assist lamp |
Yes |
| Focus distance |
• 0.1m-∞ (wide), 1.2-∞ (tele)
• 1cm closest focus (super macro) |
| Metering |
• ESP multi-pattern
• Center-weighted
• Spot |
| ISO sensitivity |
• Auto ISO
• ISO 50
• ISO 100
• ISO 200
• ISO 400
• ISO 800
• ISO 1600
• ISO 3200 (2048 x 1536 max)
• ISO 5000 (2048 x 1536 max) |
| Exposure compensation |
• +/- 2EV
• 1/3 EV steps |
| Exposure bracketing |
• +/- 5EV
• 1/3 EV steps |
| Shutter speed |
• 15-1/2000 sec (dependent on mode)
• Bulb (max 8 minutes) |
| Aperture |
F2.8 – 8 (wide) F3.1 – 8 (tele) |
| Modes |
• Auto
• Program
• Aperture priority
• Shutter priority
• MyModes
• Movie |
| Scene modes |
• Portrait
• Landscape
• Landscape with portrait
• Night scene
• Night scene with portrait
• Sports
• Indoor
• Candle
• Self portrait
• Available light portrait
• Sunset
• Fireworks
• Cuisine
• Behind glass
• Documents
• Auction
• Shoot & select 1
• Shoot & select 2
• Snow
• Beach
• Underwater wide 1
• Underwater wide 2
• Underwater macro |
| White balance |
• Auto
• Sunlight
• Overcast
• Tungsten
• Fluorescent 1
• Fluorescent 2
• Fluorescent 3
• Custom white balance |
| White balance fine tune |
-7 Red – +7 Blue |
| Self timer |
2 or 12sec |
| Continuous shooting |
• 1.2fps/7 frames (Full image size)
• 7fps/15 frames (3MP)
• 15fps /20 frames (1.2MP ) |
| Image parameters |
• Black & White
• Sepia
• Brightness correction
• Saturation correction |
| Flash |
• Built in pop-up
• Red-eye reduction
• Fill-in
• Fill-in with red-eye reduction
• Slow sync
• Working range 0.3-4.5m |
| Viewfinder |
Electronic viewfinder |
| LCD monitor |
• 2.5-inch Polycrystalline TFT
• 207,000 pixels |
| Connectivity |
• DC in
• AV out
• USB |
| Print compliance |
• PictBridge
• PIM III
• DPOF |
| Storage |
• xD-Picture Card
• 20 MB built-in memory |
| Power |
• 4x AA batteries (alkaline included)
• Optional NiMHs and charger |
| Other features |
• RAW data edit
• In camera editing / effects
• Panorama function (with optional Olympus xD-Picture card)
• Digital image stabilizer for movie capture |
| Weight (no batt) |
365g (12.9 oz) |
| Dimensions |
116 x 78.5 x 78 mm (4.6 x 3.1 x 3.1 in) |

Panasonic – the company that is more than any other responsible for the renaissance and continuing success of the ‘big zoom’ bridge camera – launched the original ‘Travel Zoom’ TZ1 back in February 2006. The formula – a big zoom on a small camera – isn’t exactly new, but the combination of Leica’s lens design expertise and Panasonic’s technology (image stabilization, fast performance) made the TZ1 the first serious alternative to bigger ‘SLR-style’ super zooms. And now the TZ1 has been superceded by two models with a new 28-280mm equiv. lens, the TZ2 (6MP, slightly lower spec) and the camera on test here, the TZ3. As well as the new wide lens the TZ3 also ups the sensor resolution to 7 megapixels, increases the screen size and throws in a few new features. The big question is, has Panasonic managed to improve some of the image quality issues that dogged the otherwise superbly capable TZ1? Let’s find out, starting as usual with the headline specification:
- 7.2 million effective pixel / 8.5 million pixels total 1/2.35″ CCD
- 10x (28-280mm equiv.) Leica DC Vario-Elmarit optical zoom
- MEGA OIS image stabilization
- Larger sensor for 28mm equiv. angle of view at 4:3, 3:2 and 16:9 aspect ratios
- Venus III Engine processor
- Fast Linear autofocus system
- High Resolution (230,000 pixel) 3.0-inch LCD
- Movies up to 840 x 480 pixels (WVGA) @ 30 fps
- 20 scene modes plus Intelligent ISO mode
TZ3 (and TZ2) vs TZ1: Key changes
As is the case with most of Panasonic’s Lumix models the TZ1 is available in either silver or black (though this may not be the case for every country and / or every retailer).
- Wider (and shorter) 28-280mm (equiv.) lens range (TZ1 was 35-350mm)
- Built in lens cover (TZ1 had a lens cap)
- Smaller and lighter camera
- Increased sensor resolution (TZ3: 7MP, TZ2: 6MP, TZ1: 5MP)
- Larger 3.0-inch screen (TZ3 only)
- Intelligent ISO mode
- Clipboard function
- ISO 1250 at full size (TZ1 was ‘only’ ISO 800), High Sensitivity mode now to ISO 3200
- White balance adjustment and extra ‘Shade’ WB preset
- Slightly improved burst mode (TZ3 only)
- Slightly better battery life
Color options
The TZ3 is available in three colors; blue, silver and black (though this may not be the case for every country and / or every retailer).

DMC-TZ3 specifications
| Street price |
• US: $330
• UK: £250 |
| Body Material |
Metal |
| Sensor |
• 1/2.35 ” Type CCD
• 8.50 million pixels total
• 7.2 million effective pixels |
| Image sizes |
• 3072 x 2304
• 2560 x 1920
• 2048 x 1536
• 1600 x 1200
• 1280 x 960
• 640 x 480
• 3216 x 2144 (3:2)
• 2560 x 1712 (3:2)
• 2048 x 1360 (3:2)
• 3328 x 1872 (16:9)
• 2560 x 1440 (16:9)
• 1920 x 1080 (16:9) |
| Movie clips |
• 640 x 480 @ 30 / 10fps
• 320 x 240 @ 30 / 10 fps
• 848 x 480 @ 30 / 10 fps (16:9)
• recording time depends on Memory Card capacity
• with sound |
| File formats |
• JPEG (Exif 2.21)
• DPOF
• QuickTime Motion JPEG |
| Lens |
• 28-280mm (35mm equiv)
• 10x optical zoom
• LEICA DC VARIO-ELMAR |
| Image stabilization |
MEGA OIS: mode 1 / 2 |
| Conversion lenses |
None |
| Digital zoom |
Extra optical zoom (4:3: 12x for 5MP, 15x for 3, 2, 1, 0.3MP, 3:2: 12.6x for 4.5MP, 15x for 2.5MP, 16:9: 13x for 3.5MP, 15x for 2MP) |
| Focus |
• Auto Focus system
• Normal / Macro (dial)
• Continuous AF on / off |
| AF area modes |
• 1 / 9 point
• 1 / 3 point high speed
• Spot |
| AF assist lamp |
Yes |
| Focus distance |
• Normal: 50cm – infinity (wide) / 200cm – infinity (tele)
• Macro / Simple mode / Intelligent ISO / Motion picture / Clipboard : 5cm – infinity (wide) / 200cm – infinity Tele (except tele end)
• 100cm – infinity (Tele Macro at tele end) |
| Metering |
• Intelligent Multiple
• Center weighted
• Spot |
| ISO sensitivity |
• Auto
• ISO 100
• ISO 200
• ISO 400
• ISO 800
• ISO 1250
• High Sensitivity mode ISO 3200 |
| Exposure compensation |
• +/- 2EV
• 1/3 EV steps |
| Exposure bracketing |
• +/- 1/3EV -1EV
• 3 frames |
| Shutter speed |
• 8-1/2000 sec
• Starry Sky Mode: 15, 30, 60sec |
| Aperture |
F3.3 / 8.0 (Wide: 2 steps) F4.9 / 11 (Tele: 2 steps) |
| Modes |
• Program AE
• Simple
• Normal picture
• Macro
• SCN1, SCN2
• Intelligent ISO |
| Scene modes |
• Portrait
• Soft Skin
• Scenery
• Sports
• Night Portrait
• Night Scenery
• Self Portrait
• Food
• Party
• Candle
• Fireworks
• Starry Sky
• Beach
• Aerial photo
• Snow
• High Sensitivity
• Baby 1 & 2
• Underwater
• Sunset
• Pet |
| White balance |
• Auto
• Daylight
• Cloudy
• Shade
• Halogen
• White Set
• White balance fine tune (+/- 1500k in 150k steps) |
| Self timer |
• 10 or 2 secs |
| Continuous shooting |
• Full-Resolution Image, 3 frames/sec or 2 frames/sec |
| Image parameters |
Standard, Vivid, Cool, Warm, Natural, Black & White, Sepia |
| Flash |
• Auto
• Auto/Red-eye reduction
• Forced On
• Slow Sync/Red-eye reduction
• Forced Off
• Range: 0.6 – 4.2m (wide) 1.0 – 2.8m (tele) |
| Viewfinder |
None |
| LCD monitor |
• 3.0-inch Polycrystalline TFT
• 230,000 pixels
• Field of view 100% |
| Connectivity |
• USB
• DC in
• AV out |
| Print compliance |
PictBridge |
| Storage |
• 12.7MB built-in memory
• SD / SDHC / MMC card compatible |
| Power |
• Li-ion battery pack
• Optional AC adapter |
| Weight (excl batt) |
232 g (0.51lb) |
| Dimensions |
105 x 59.2 x 36.7 mm (4.20 x 2.37 x 1.47 in) |