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Panasonic VIERA ST50 vs Panasonic VIERA ZT65

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

Better figure, where one is clearly better

PanasonicVIERA ST50PanasonicVIERA ZT65
Overview
ReleasedMarch 20122013
Display
PanelPlasmaPlasma
Panel detailUK ST50B family is 42, 50, 55 and 65 inches. Full HD active-shutter 3D; optional Bluetooth eyewear. Focused Field Drive is a panel-driving measure, not native refresh; the maker's US 2500 FFD and UK review's 2000 Hz descriptions are regional and not entered as native Hz.Panasonic's UK TX-P60ZT65B energy fiche confirms 60-inch Full HD. The marketed 3000 Hz Focused Field Drive is sub-field operation, not a published native image refresh rate.
Resolution1920 × 1080 (Full HD)1920 × 1080 (Full HD)
HDR formatsNoneNone
Picture processingNeoPlasma, Infinite Black Pro and Intelligent Frame Creation (exact reviews); maker menu includes P-NR and ambient-light adjustment.Studio Master Panel with Ultimate Black filter, THX certification, 1080p Pure Direct and Intelligent Frame Creation. The advertised 3000 Hz Focused Field Drive is not native refresh.
Picture modes–THX, EBU and Professional calibration modes with ten-point white balance and colour management on the reviewed UK set.
Motion handlingNative panel Hz unpublished in the read UK manual and omitted; input and focused-field drive frequencies do not establish it.AVForums found strong 1080p24 and broadcast motion and only rare false contouring or image retention. What Hi-Fi? also praised fast-motion stability.
Sizes
Sizes42, 50, 55, 65″60″
Largest size65″60″
Gaming
HDMI ports3 (0 HDMI 2.1 at 4K 120 Hz+)3 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateNoneNone
HDMI detailThree HDMI inputs with ARC on HDMI2; 3D, Content Type, Deep Colour and x.v.Colour, HDAVI Control 5. SCART, component and composite via included adaptors. Home Cinema Choice lists D-sub PC and analogue audio output, but the UK maker connector table lists neither; those disputed connections are omitted.Three HDMI inputs; HDMI2 supports ordinary Audio Return Channel. SCART and component/composite connections use supplied adaptors.
Input lag–AVForums measured 42 ms in Game mode and about 63–65 ms without it on its UK TX-P60ZT65B sample.
Smart TV and sound
Smart TV platformVIERA Connectmy Home Screen
Processor–Hexa Processing Engine, identified in AVForums' exact UK review
Speakers18 W20 W
Wi-FiWi-Fi 4 (802.11n), built-inBuilt-in wireless LAN
Bluetooth3.0Bluetooth 3.0 for accessories
Speaker detailTwo front speaker arrays plus woofer; 4 W + 4 W + 10 W, 18 W. Woofer diameter is 80 mm on 42/50/55-inch and 100 mm on 65-inch.Panasonic's UK manual specifies two speakers and one 75 mm woofer, rated 5 W + 5 W + 10 W.
Audio features–Bluetooth accessories, 3.5 mm headphone socket and VIERA Touch Pad Controller with voice input.
CastingVIERA Connect service portal. UK manual says no full web browser function, while Home Cinema Choice and the US maker launch notice say browser; retain the regional/documentation conflict and do not promise full browsing. Legacy apps depend on service providers.My Home Screen, VIERA Connect applications, DLNA and Swipe & Share 2.0 media transfer.
TV tunersUK DVB-T/T2 (Freeview HD), analogue PAL I and CI Plus; Ireland reception differs in the maker table.UK Freeview HD terrestrial and Freesat HD satellite tuners; the UK model is TX-P60ZT65B, whereas ZT60 is used for other regions.
USBTwo USB 2.0 inputs plus SD card slot; media playback and USB keyboard/gamepad support.Three USB inputs and an SD card slot for media and USB recording.
EthernetRJ45 10BASE-T/100BASE-TX; DLNA.Wired network port for My Home Screen and DLNA services.
Optical audio outFibre-optic PCM/Dolby Digital/DTS output; 3.5 mm stereo headphone jack.Digital optical audio output.
Design and power
SizeWithout pedestal: 42-inch 1003 × 609 × 50 mm, 17.5 kg; 50-inch 1180 × 709 × 50 mm, 23 kg; 55-inch 1295 × 774 × 50 mm, 28 kg; 65-inch 1508 × 894 × 52 mm, 38 kg. Configuration weights exclude pedestal.Panasonic UK manual: TV only 1404 × 828 × 47 mm, 36.5 kg; with pedestal 1404 × 921 × 308 mm, 44 kg.
StandIncluded pedestal. With pedestal: 42-inch 1003 × 656 × 320 mm, 20.5 kg; 50-inch 1180 × 757 × 335 mm, 27 kg; 55-inch 1295 × 823 × 357 mm, 32.5 kg; 65-inch 1508 × 943 × 400 mm, 43.5 kg.Supplied metal pedestal; UK manual gives 500 × 300 mm wall-mounting holes.
VESA patternMaker bracket mounting holes: 400 × 300 mm (42/50-inch), 500 × 300 mm (55-inch), 684 × 300 mm (65-inch); M8 screws. Do not substitute a rounded VESA size.–
Power useOn-mode average 133/180/205/255 W and rated 295/355/400/450 W for 42/50/55/65-inch respectively. Standby 0.30 W, off 0.25 W.Panasonic fiche: 286 W average on mode, 530 W rated, 0.30 W standby and 0.25 W off.
Energy classC under the original 2012 label scheme.C under the original Panasonic product fiche.
Colours–Black glass front with silver trim and metal pedestal.
In the boxPedestal, N2QAYB000715 remote/R6 batteries, mains lead, clamp/ferrites and AV terminal adaptors. Optional 3D eyewear and communication camera. Panasonic's 8 March 2012 notice explicitly says US 50/55-inch ST50 models are now available; UK configurations are separate and larger US sizes followed later. Release reflects first confirmed family sale, not the UK review dates.Main remote, VIERA Touch Pad Controller, pedestal, two pairs of Bluetooth 3D glasses, Electronic Touch Pen, SCART and component/video adaptors, mains lead and cable ties. Exact UK first-sale month is unverified, so release uses year precision.

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