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Acroniemen en termen uitgelegd

Yealink onderzoekt Yealinks vereenvoudigde uitleg van algemene zakelijke communicatietermen met betrekking tot de toepassing van drie belangrijke communicatieapparaten, IP-telefoons, videoconferentieapparatuur en headsets die draaien op Microsoft, Zoom en andere systemen, in zakelijke werkzaamheden.

Wat is een 4k-videocamera?

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4K Video Camera is een type camera dat is ontworpen om video-inhoud vast te leggen met een resolutie van 4K, wat doorgaans verwijst naar een horizontale resolutie van ongeveer 4.000 pixels. De meest voorkomende 4K-resolutie die wordt gebruikt voor video is 3840 x 2160 pixels (vaak aangeduid als Ultra HD of UHD), wat vier keer het aantal pixels is in Full HD (1920 x 1080).


Hier zijn enkele belangrijke kenmerken en aspecten van 4K-videocamera's:


1. Resolutie

Zoals gezegd leggen 4K-videocamera's video vast met een resolutie van 3840 x 2160 pixels, wat zorgt voor veel detail en helderheid.


2. Sensorgrootte

Deze camera's hebben vaak grotere sensoren dan camera's met een lagere resolutie. Dit kan resulteren in betere prestaties bij weinig licht en een kleinere scherptediepte.


3. Framesnelheden

Veel 4K-camera's ondersteunen verschillende framesnelheden, waaronder 24 fps, 30 fps en zelfs hogere framesnelheden zoals 60 fps of 120 fps, die kunnen worden gebruikt voor slow-motioneffecten.


4. Videoformaten

Ze bieden meestal verschillende videoformaten aan, zoals H.264 of H.265 (HEVC), en ondersteunen mogelijk professionele codecs zoals ProRes of DNxHR.


5. Opnamemedia

Afhankelijk van het model kunnen deze camera's opnamen maken op SD-kaarten, CFast-kaarten of interne solid-state drives (SSD's).


6. Connectiviteit

Kenmerken zoals HDMI-uitgang, USB-poorten, Wi-Fi en Bluetooth-connectiviteit zijn gebruikelijk, waardoor directe verbinding met monitoren, externe recorders of draadloze transmissie mogelijk is.


7. Bedieningselementen en interfaces

De meeste 4K-camera's zijn voorzien van geavanceerde bedieningselementen en interfaces, zoals touchscreens, aanpasbare knoppen en afstandsbedieningsopties.


8. Levensduur van de batterij

De batterijduur kan per model verschillen, maar veel 4K-camera's zijn uitgerust met oplaadbare batterijen die meerdere uren opnametijd bieden.


9. Extra functies

Sommige modellen zijn voorzien van ingebouwde beeldstabilisatie, focus peaking, zebrapatronen en andere hulpmiddelen om het fotograferen te vergemakkelijken.


4K-videocamera's worden veel gebruikt in professionele filmproducties, televisie-uitzendingen, videoconferenties, vergaderruimtes, videografie voor evenementen en door makers van content die hoogwaardige beelden nodig hebben voor onlineplatforms zoals YouTube en Vimeo.




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