Analog display technology using electron beam — rarely used except archival or intentional aesthetic. Creates distinctive scanline structure.
Long before flat screens became standard, electron beams scanned line by line across a phosphorescent surface in Cathode Ray Tubes (CRTs) – creating that characteristic flicker and scanline structure that is now intentionally used as a retro effect. On set or in the edit, you primarily need to understand this technology when digitizing archival material or deliberately imitating the CRT look.
The visual signature of a CRT is unmistakable: horizontal lines, slight geometric distortions at the edges, specific color separation, and the typical persistence of vision with bright objects. If you're scanning material shot in the 1980s or 90s or old recordings, you need digitization service providers who don't simply filter out these artifacts – they are part of the authentic look. Conversely, if you want to intentionally create CRT aesthetics in modern material (music videos, VFX sequences, documentaries about computer games), it's worth studying real CRT monitors or specialized VST plugins that accurately replicate scanline density, flicker jitter, and vignette effects.
The CRT tube remains practically relevant in three scenarios: Firstly, when archiving video and television copies from the analog era – here you need to know the condition of the source material. Secondly, in restoration projects, where you decide whether to remove scanlines or not. Thirdly – and this is the creative aspect – when you specifically need retro-futuristic scenes: hacker interfaces, surveillance monitor footage, or the inner workings of old computers. You can still find real CRT monitors in e-waste shops or from collectors; photographing them requires experience with flicker sync and camera frequency to avoid constantly rolling bars.
Modern displays are linear and flicker-free – technically superior, but aesthetically you lose an entire texture of visual expression. Therefore, the CRT is not dead, but a design element that is used intentionally.