8K: Digital image resolution with approximately 8,000 horizontal pixels (7680×4320 UHD or 8192×4320 DCI) and roughly 33 megapixels.
“8K” is a collective term for digital image resolutions with approximately 8000 pixels in the horizontal direction. It represents the next stage above 4K and is used in camera sensors, post-production, as well as displays and projection. In the camera and recording domain, 8K describes the native or recorded resolution of a sensor; in distribution, the term describes the playback format.
As with 4K, two different standards exist side-by-side under the 8K label: the consumer-oriented 8K UHD (UHDTV2) and the cinema-technical 8K DCI (Full Format). Both differ in pixel count and aspect ratio. It is important to distinguish this from the pure sensor pixel count of a camera manufacturer, which can vary slightly depending on the sensor format (e.g., Super 35, Large Format) and does not necessarily correspond exactly to one of the standard values.
| Format | Resolution (Pixels) | Aspect Ratio | Total Pixels |
|---|---|---|---|
| 8K UHD (UHDTV2) | 7680 x 4320 | 16:9 | approx. 33.2 megapixels |
| 8K DCI (Full Format) | 8192 x 4320 | 256:135 (approx. 1.90:1) | approx. 35.4 megapixels |
8K UHD has double the linear resolution of 4K UHD and thus four times the total pixel count. 8K UHDTV is standardized in, among others, SMPTE ST 2036-1 (UHDTV2) and ITU-R BT.2020; the DVB has established 7680 x 4320 as the broadcasting standard UHD-2.
In practice, 8K is less frequently shot for its pure final resolution, but primarily for creative and technical reserves:
On the other hand, there are larger data rates and storage requirements, higher demands on workflow and editing computers, as well as the need for correspondingly high-resolution lenses. 8K pertains to image and camera technology and should not be confused with lighting equipment; the kilowatt notation commonly used in lighting (e.g., “6K”, “12K” for lights) denotes power in kilowatts and has nothing to do with 8K resolution.
As a cinematographer, I appreciate 8K for its incredible detail resolution and the ability to render even the finest textures razor-sharp. However, the high data rates demand precise planning of storage capacities and powerful monitoring systems on set. Especially in available light situations, I benefit from the improved noise characteristics through downsampling to smaller formats.
For me as a director, 8K means maximum creative flexibility in post-production – I can choose image crops afterward without having to fear any loss of quality. This "reframe" capability gives me the freedom to make spontaneous decisions on set and refine them later in the edit. However, I have to take the longer render times into account when scheduling.
8K productions mean significant additional costs for me due to expensive camera technology, massive storage requirements, and longer post-production times. However, the investment pays off for international sales and future-proof archiving. I calculate around 20-30% higher costs compared to 4K productions and plan for correspondingly larger backup and transfer capacities.
1. Was beschreibt „8K" am besten?
2. Zu welchem Department gehört „8K"?
3. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?
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