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Sony Cyber-shot DSC-T20 vs Sony Cyber-shot DSC-W55

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SonyCyber-shot DSC-T20SonyCyber-shot DSC-W55
Overview
ReleasedMarch 2007February 2007
Image and sensor
Camera typeCompactCompact
Sensor typeSuper HAD CCDSuper HAD CCD
Effective resolution8.1 MP7.2 MP
Largest image3264 × 24483072 × 2304
RAW recordingNoNo
Standard ISO range80–3200100–1000
Sensor detail1/2.5-type primary-colour interlaced Super HAD CCD; original maker specifies 8.1 million effective and 8.3 million total pixels; manual gives 8,083,000 effective and 8,286,000 total, while current UK support rounds effective pixels to 8.0 MP1/2.5-type primary-colour CCD, approximately 7.201 million effective and 7.41 million total photosites; optical format is not physical sensor dimensions
Image formatsJPEG; native 3264 × 2448, 3264 × 2176 in 3:2 mode or 1920 × 1080 in 16:9 modeJPEG Fine/Standard, 3072 × 2304 maximum; 3072 × 2048 in 3:2 or 1920 × 1080 in 16:9
Image processorBIONZ with 14-bit conversion and Clear RAW noise reduction before JPEG compression; no RAW file recordingReal Imaging Processor with Clear RAW NR; this processes JPEG photographs and does not provide RAW recording
Lens and shooting
Built-in lens38–114 mm equivalent38–114 mm equivalent
Maximum aperturef/3.5–4.3f/2.8–5.2
Optical zoom3×3×
StabilisationOptical lens stabilisationNone
Lens detailInternal folded Carl Zeiss Vario-Tessar; actual 6.33–19.0 mmCarl Zeiss Vario-Tessar, actual 6.3–18.9 mm; manual specifies 38–114 mm equivalent, whereas Hong Kong launch table misprints the wide end as 35 mm
AutofocusNine-point multi-area, centre or spot AF, with single or monitoring operation and face detection; original maker normal from 0.5 m, macro from 0.08 m wide or 0.25 m telephoto, Magnifying Glass mode 0.01–0.2 m; current UK generic macro row differsFive-area Multipoint or centre AF, Single or Monitoring operation and AF illuminator; focus presets. Normal focus from approximately 50 cm, macro 2 cm wide or 30 cm telephoto
ShutterAuto 1/4–1/1000 second; Program 1–1/1000 second, labelled Manual Mode in current UK support–
Burst detailMaker up to 100 consecutive images with flash off; handbook gives approximately 0.5-second intervals, longer depending on image size; current UK support gives 0.46 second; no headline fps inferred from these intervalsPhoto Review measured approximately 0.9-second intervals in a short full-resolution burst; its specification table lists four frames. Reduced Multi Burst records sixteen frames combined into one 1M photograph with selectable 1/30, 1/15 or 1/7.5-second intervals
Stabilisation detailSuper SteadyShot optical stabilisation; high sensitivity is a separate anti-blur option–
FlashAutomatic, forced, off or slow-sync flash with red-eye reduction; ISO Auto range 0.1–3.0 m wide or 0.25–2.5 m telephotoBuilt-in flash, Auto/forced/off/slow-sync and red-eye reduction; manual recommends ISO Auto range approximately 0.2–3.9 m wide or 0.3–2.0 m telephoto
Exposure controlsAuto or Program with ±2 EV in 1/3 EV steps; nine scenes; no manual aperture or shutter controlAuto, Program and seven scene modes: High Sensitivity, Twilight, Twilight Portrait, Landscape, Soft Snap, Snow and Beach; multi-pattern, centre-weighted or spot metering
Video
Highest video resolution640 × 480 at 30 fps640 × 480 at 30 fps
Video detailMPEG-1 with mono sound and optical zoom during recording; VGA Fine approximately 30 fps requires Memory Stick PRO Duo, VGA Standard approximately 17 fps or 320 × 240 approximately 8 fps; HD output is for still photographs, not HD movie recordingMPEG Movie VX Fine, 640 × 480 at approximately 30 fps, requires Memory Stick PRO Duo; Standard approximately 17 fps, a smaller video-mail mode. Maximum movie file approximately 2 GB
Audio–MPEG1 mono movie sound; built-in mono microphone and speaker
Screen and viewfinder
ViewfinderNoneOptical
Screen size2.5″2.5″
Screen dots230,000115,200
Touchscreen–No
Tilting screen–No
Display detailHybrid Clear Photo LCD Plus TFT; 230,000 rounded dots in maker specifications, 230,400 in manual; no viewfinderFixed 2.5-type TFT LCD; manual specifies 115200 dots, launch sheet rounds to 115K. Histogram, adjustable backlight and optical real-image viewfinder
Connections and design
BluetoothNo–
Battery life (maker's claim)380 photographs380 photographs
Body weight127 g116 g
Release detailOriginal Hong Kong maker announcement specifies end of March 2007; Japanese maker first sale is 6 April 2007 and original US maker availability is April 2007Sony US 17 January 2007 announcement reproduced by DPReview specifies February store availability; Hong Kong maker announcement specifies beginning of March. February month precision retained, exact international first-sale day unconfirmed
Recording mediaApproximately 31 MB internal memory; Memory Stick Duo or Memory Stick PRO DuoApproximately 56 MB internal memory; Memory Stick Duo or Memory Stick PRO Duo, not an SD card slot
PortsMulti-connector for USB 2.0 Hi-Speed and mono AV output; optional component HD output adaptor cable or cradle for still photographs; supplied cable does not provide DC inputMulti-use connector for USB 2.0 Hi-Speed and mono AV output; PictBridge direct printing. W55 uses the multi-connector cable, rather than the separate USB/AV sockets of W35
Battery life detailNP-BG1 lithium-ion battery; maker CIPA claim 380 photographs or 190 minutes with LCD on; manual pack capacity 3.4 Wh / 960 mAh; original US launch prose assigns 340 shots to T20 and 380 to T100, conflicting with UK, Hong Kong and manual T20 figuresNP-BG1, 3.4 Wh/960 mAh; manual CIPA claim approximately 380 photographs/190 minutes with LCD on or 490/245 minutes off at 25°C, Fine JPEG, Single AF, alternating zoom ends, one shot every 30 seconds, flash every second shot and power cycle every ten
ChargingSupplied BC-CSG, BC-CSGB or BC-CSGC external charger according to region; AC adaptor cannot charge the camera batteryExternal BC-CSG/BC-CSGB/BC-CSGC battery charger; practical charge approximately 270 minutes or full charge 330 minutes at 25°C. Optional AC adapter does not charge the battery inside camera
Dimensions89.7 × 55.7 × 22.8 mm (width × height × depth, excluding projections)88.9 × 57.1 × 22.9 mm (width × height × depth), excluding protrusions
Weight detailApproximately 127 g excluding battery and media; 159 g including battery, wrist strap and shooting accessories116 g excluding battery and media in Sony Hong Kong specification table; manual loaded weight approximately 147 g including NP-BG1, wrist strap and other accessories
MaterialsFull-metal aluminium body in original Hong Kong maker specification tableSony Hong Kong describes full-metal aluminium construction; Photo Review describes aluminium cladding over a plastic body
ColoursSilver, black, white or pink; colour editions share this entryBlack, silver, blue or pink; colour finishes share this entry
In the boxNP-BG1 battery and case, external charger, multi-connector USB/AV cable, wrist strap, software and instructions; mains lead except USA and CanadaNP-BG1, external battery charger, power cord where applicable, multi-use USB/AV cable, wrist strap, software CD-ROM and instructions; memory card not supplied

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