https://wccftech.com/4k-prores-video-recording-is-not-available-on-128gb-iphone-13-pro-models/

Apple announced the iPhone 13 series yesterday alongside the new Apple Watch Series 7 and iPad mini 6. With a great set of announcements, Apple is making sure that it leads the industry in the year to come. The iPhone 13 and iPhone 13 Pro models are very much alike in a lot of aspects but also share their differences. However, Apple will also be limiting 4K ProRes video recording on the iPhone 13 Pro Max on some models.

As mentioned earlier, Apple will limit 4K ProRes video recording on the iPhone 13 Pro series with 256GB or higher models. What this means is that you will not get 4K ProRes on 128GB iPhone 13 Pro models. However, the device will still support ProRes video recording at 1080p at 30fps. You will be able to record 4K at 30fps on the iPhone 13 Pro models if you are buying the 256GB or higher storage model.