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Even when targeting 8-bit displays, recording 10-bit is still beneficial. Besides obvious benefits in editing and encoding, simply playing a 10-bit video file straight from the camera on an 8-bit screen is useful when applying any common "effects" (brightness, contrast, LUT, colorspace transformation, gamma correction, tonemapping, etc etc).

> Btw, over 10 years old Canon 5DMIII can shoot RAW video with MagicLantern

Not sure why that is relevant in this context, but any digital camera would be capable of shooting RAW video with hacks: they all have photo-sensors and RAW simply means dumping the digitized signal data in a suitable format. It's a matter of hacking the device. But it doesn't mean you should do it, especially when that's not what they're designed for. Unsurprisingly, in the case of Canon 5D Mark III (which is a photo-oriented camera lacking a stabilizer, you can read about further limitations such as the under-utilized sensor in video mode [which typically happens due to hardware limitations] here https://www.dpreview.com/reviews/canon-eos-5d-mark-iii/25), a lot of potential problems await apparently: https://www.cined.com/consider-this-before-you-shoot-raw-on-... For RAW video, at the very least, you need a more reliable storage hardware hooked to your device with sufficient capacity for recording (meaning CFExpress or NVMe via USB, not SDXC), and possibly active cooling, both missing from that camera so it would require some hardware modding.

That being said, modern video cameras can also do more than the trivial task of recording RAW: they can handle processing and encoding of higher quality videos (resolution, bpp, frame rate) in real time, which requires specialized silicon missing from Canon 5D Mark III.

> Manufacturers should open/update code to their old cameras that are capable do this. Its really disappointing when marketing ruin whole product. No wonder that camera market dying.

1. The camera hardware isn't actually designed for it (by the way, even with new video cameras, there are usually trade offs, you turn one feature on and another becomes inaccessible) 2. that's not the reason why the consumer camera market is shrinking, and 3. doing that would shrink the market volume even further.




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