Have you done any comparisons that you can point to? The iPhone 15 hasn't even been out all that long. The video in the sibling comment notes that the iPhone does surprisingly well in terms of dynamic range, for example (7:12).
There are two limiting factors in dynamic range. Those are the dynamic range of the sensor itself (which is and has been great, even on my V30), and the difference between the highlights and the noise floor - and the noise floor is fixed. The iPhone 15 doesn't have a meaningfully lower noise floor than the iPhone 14 and it's only barely better than the V30 - or any other smartphone with a BSI sensor and a large aperture.
The video is exactly consistent with what I'm saying. All examples are either in broad daylight or strong studio lighting.
As far as I can tell, you haven't done a comparison in low light conditions of the iPhone 15 against any other video camera. Of course one would expect a camera with a larger sensor to do better in low light, all else being equal. But all else is not equal. Professional video cameras aren't stacking multiple exposures to construct a single frame, and don't have anything like the computational power of the iPhone 15. So it would be much more interesting to see a real comparison than to hear people repeating abstract theoretical points over and over again.
> Professional video cameras aren't stacking multiple exposures to construct a single frame
We are talking about video.
> and don't have anything like the computational power of the iPhone 15
They have far more, because the processing is done in post with powerful workstations. For stills you have a point because of multiframe techniques you can't easily do in post, but that doesn't work at all for video.
> repeating abstract theoretical points over and over again
You don't have to. There are dozens of practical comparisons done on dozens of smartphones over the past years. No one has really done it on the iPhone 15 (yet) because it just came out, but there is no reason why it would be different. People have done the comparison with the iPhone 14 and even without log formats results are far worse in anything but perfect light, even compared to hobbyist-grade video cameras costing less than the phone. This will be even worse for log video by the nature of the logarithmic transformation.
The iPhone does multiple exposure HDR in video too. That's why the dynamic range is so good.
>They have far more, because the processing is done in post with powerful workstations.
If you are shooting RAW video, sure. Otherwise a significant amount of processing has to be done on the camera.
By all means link to any comparison that you think is relevant. But if it doesn't involve an iPhone 15, it doesn't tell us much about the iPhone 15. It especially doesn't tell us much about a video mode that's only available on the iPhone 15.
> The iPhone does multiple exposure HDR in video too. That's why the dynamic range is so good.
This doesn't do anything for the SNR dynamic range limitation. Smartphone sensors nowadays are going to be limited by noise for dynamic range very rapidly. Multiple exposures in video mode reduces total exposure and is only worth it with more-than-perfect lighting. It also means you can't guarantee a 180* shutter angle so will need to disable it for smooth movement.
> If you are shooting RAW video, sure. Otherwise a significant amount of processing has to be done on the camera.
The only additional preprocessing is debayering and color transformation, none of which prevents the type of processing we're talking about. It doesn't have to be in-camera.
> By all means link to any comparison that you think is relevant. But if it doesn't involve an iPhone 15, it doesn't tell us much about the iPhone 15. It especially doesn't tell us much about a video mode that's only available on the iPhone 15.
Log video is not a video mode that's exclusive to the iPhone 15. Various phones have had it since 2017. The only difference is the denoising and sharpening and that's a known quantity.
