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One of the important features of the latest Pro versions of the iPhone is the Apple ProRes video recording mode. However, not every owner of the new firmware will be able to take advantage of all its advantages: buyers of the version with a 128 GB drive will have to face an annoying limitation.
Technically, the iPhone 15 Pro (like its Max version) can record ProRes videos in 4K @ 60 fps. However, if you compare two iPhone models in the Apple Store application, the specifications will note that the basic modification of the new product, which has 128 GB of internal memory, can only record in 1080p resolution at 30 fps.
The same limitation applies to the cheapest 13 Pro and 14 Pro. At the same time, the new product supports the function of direct recording to external storage, but Apple does not specify whether there will be an option to improve picture quality to 4K @ 60 fps.
The company also did not advertise the fact of a decrease in video quality for the younger iPhone 15 Pro. However, it is presumed to be due to the large volume of files: a 10-bit ProRes video lasting 60 seconds “weighs” 1.7 GB in 1080p and 6 GB in 4K resolution.
Source: 4PDA