What does “scanline” mean?

What is a Scanline?

A scanline refers to the visible horizontal lines inherent to Cathode Ray Tube (CRT) monitors, which simulate the display limitations of original arcade cabinets or early home consoles. Crucially, this effect is not part of the game data itself but rather a characteristic of the display technology used to view the output. When discussing physical media or hardware, scanlines usually refer to the visual output achieved via original CRT televisions. In emulation or upscaling, scanlines are an intentional filter applied—often called a "CRT shader"—to mimic this authentic look. Understanding the difference between an artifact and a filter is key to accurate pricing.

Impact on Resale Value

The presence of authentic, un-filtered CRT scanlines on hardware (e.g., a console outputting a native analog signal) can increase value by 10-25% over a digital-only version, provided the hardware is fully functional. If the scanlines are purely a software filter on a modern display, the impact on the base game price is negligible unless the game is specifically marketed as a "CRT experience." For example, a CIB copy of a system known for its authentic CRT output might fetch 1.2x to 1.8x the price of a modern digital release, assuming comparable condition. Conversely, if you are looking to understand the nuances of retro display technology, checking out our guide on [CRT Monitor Guides] can provide context.

How to Spot Authentic vs. Simulated Lines

For hardware, authentic scanlines are visible when connecting the console to a true CRT monitor. Look for subtle color bleeding or slight geometric distortions around high-contrast edges—these are genuine artifacts of the electron beam scanning process. For software or reproductions, examine the texture uniformity. Authentic scanlines often exhibit slight irregularity or subtle phosphor glow variation. A common fake is a perfectly uniform, digitally drawn line pattern applied across the entire screen. If the seller provides high-resolution photos of the game running on a modern LCD, the lines are almost certainly a filter unless the display itself is clearly a CRT. For deeper dives into hardware condition, review our [Console Condition Guide].

Buying and Selling Strategy

Buying Smart: Paying a premium for scanlines is justified only when the buyer intends to use a genuine CRT display to achieve historical accuracy. If the buyer plans to use a modern HDTV, the premium for simulation is rarely worth the cost unless the game's aesthetic is central to its brand identity. A fair deal reflects the *authenticity* of the display method, not just the visual effect.

Selling Smart: Listings must explicitly define the source of the lines. If the item is hardware and the scanlines are native to its analog output, state this clearly using "Authentic CRT Output." If it is a digital emulation or cartridge, label the lines as a "Retro Filter" or "Shader." A high-quality photo showing the game running on a CRT monitor can justify a 15-25% premium for hardware listings, whereas vague descriptions lead buyers to assume the effect is a cheap filter.

FAQ

Q: Is a CRT scanline always better than a digital upscale?

A: Not necessarily. While authentic CRT lines offer historical accuracy, a well-executed digital upscale on a modern screen can provide a cleaner, more playable image without the inherent fuzziness of aging CRT phosphors. The preference depends entirely on the collector's goal: authenticity versus modern usability.

**Q: How do I know if a game *should* have scanlines?**

A: If the game was designed for an arcade cabinet or an early console that used analog output, the original visual presentation likely included scanline characteristics. Check the game's original manual or box art for any mention of display technology or intended viewing environment.

Q: Can I buy a "scanline filter" for cheap?

A: You can buy software filters cheaply, but they carry no intrinsic collectible value. If you are paying a premium, ensure the listing specifies that the effect is native to the hardware's output, as this is the only way the effect adds tangible value to the collectible.

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