“What is the peak HDR brightness of the 42-inch LG OLED42C5PUA for both a full-screen image and a 10% window and also in standard mode? I understand that its specifications differ from the 55-inch +”
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Hello there. Thank you for sharing your inquiry about the peak brightness of the OLED42C5PUA. We understand your question and your awareness that the smaller screen sizes have different performance characteristics than the larger models. Based on testing results for the 42-inch model, here are the approximate peak brightness figures: Peak HDR Brightness (10% Window): The 42-inch C5 achieves around 750 to 800 nits for a small, bright area in HDR content. This is the typical measurement that demonstrates the TV's peak highlight capability. Full-Screen HDR Brightness (100% Window): For a completely white screen in HDR, the brightness is typically around 170 to 200 nits. This difference from the smaller window is characteristic of all OLED displays, as the full-screen brightness is regulated to protect the display's pixels. Standard Mode Brightness (SDR): For a 100% white screen in Standard Dynamic Range (SDR) content, the brightness will vary depending on your specific settings, but it can typically reach between 200 and 250 nits. https://www.bestbuy.com/product/lg-42-class-c5-series-oled-evo-ai-4k-uhd-smart-webos-tv-2025/JJ8VPZTHLJ We appreciate you looking into the technical specifications of your OLED42C5PUA. If you would like to discuss optimizing your current picture settings to maximize brightness for your specific environment, please send us a private message on Social Media @LGUSSupport, and our team will be more than happy to assist you. —Renzo
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