
My iPhone 15 Pro 256GB Black arrived around noon (CET summertime) today (September 22), delivered by UPS at my doorstep.
Working beautifully after unpacking and the typical “login orgy” (some apps more secure than others) - even after transfer of “everything” from my iPhone 12 Pro.
Initial Quick and dirty functionality and capabilities test, default iPhone App only. Some really interesting use cases, when USB-C is used.
Quality tests etc. plus test of BlackMagic Camera App will follow later. Stability, stress tests and temperature measurements will follow soon.
Any suggestions concerning test approach and setup are welcomed.
Here goes reality (some “Real Camera” manufacturers with external USB-C video recording designed by the “still image crowd” (?) could learn a thing or two - I’m also looking at you Panasonic
For all lenses - 0.5, 1 (,2) and 3, the ProRES HDR 4k 25fps video 25-26s lands around using 2.4 GB (or a bit less, than 100 MegaBYTE per second). In log mode (only tested standard lens until to now) the same settings and motif use around 1.86 GB or roughly 75% of the space required for the HDR setting.
A short, quick and dirty test of USB-C connection (far more at a later time), with a Samsung T7 Shield (that can "munch a lot of data" on a sustained basis - also when copying to drive from a MacBook Pro 14 M1 Pro), copying to disk is extremely fast (actual speed tests later).
No surprise was, that on a fully installed 256GB iPhone 15 Pro (all data transferred from a current iPhone 12 Pro 256GB) there is around 26-27min "free space" and after initial use of "a few" GB for test recordings, there is still 23min "free space" for ProRES HDR 4k 25 fps internally:
The big surprise comes, when I add the Samsung T7 Shield 4TB drive to the USB C port:
I think it will suffice for most recording sessions/days, with daily backups to other media, eeeh..?
Just for the heck of it, I connected one of my Crucial MX500 2TB SATA SSD's used with my Atomos Ninja V for recording Lumix S5 12-bit 5.9k PrRES RAW 25 fps material (roughly 250+ MegaBYTE per second) via a SATA to USB-C cable (always nice to be able to use the same media), and the SSD was immediately recognized by the iPhone. The completely empty drive leads the iPhone Camera App to the conclusion, that I can record 344 minutes of ProRES 4k HDR 25fps material (or thereabouts). Let's be nice, and say at least 5 hours of recording (with the Ninja V and ProRES RAW as specified above, there is seldom room for more than roughly 80 minutes, so speed should not be a problem either in this setup).
Apple officially accepts ExFAT and APFS formatted external media.
Important feature for external recording use.
I found an oooold USB-C Hub (inateck) in a dark corner of my "miscellaneous thingys" box. Connected USB-C power to the hub. And connected the Samsung T7 Shield to the hub (USB-C, but USB A would probably also work).
Lo and behold. The iPhone recognized the USB-C drive. The Camera App still stated 666 min recording time capacity, and really, really, REALLY important: The iPhone also charges (from PSU or PowerBank). Now we're talking real usability!!!
Short test copying from the Fotos App to the T7 worked as expected.
A short video recording of some 10 seconds (around 700+ MByte) also went as expected. ProRES 422HQ is, what I call "acceptable" most days (not possible to add screendump of MediaInfo)
Calculate 15W for the hub and up to 30W for the iPhone and SSD. This will probably never be exhausted in prolonged use.
Played back on my Mac: No problems at all. Now, we're talking (and "real camera" manufacturers could start listening
Now... what if... hmmm... I get ideas now... reserved for later.
Regards and remember to have a bit of fun every day
Working beautifully after unpacking and the typical “login orgy” (some apps more secure than others) - even after transfer of “everything” from my iPhone 12 Pro.
Initial Quick and dirty functionality and capabilities test, default iPhone App only. Some really interesting use cases, when USB-C is used.
Quality tests etc. plus test of BlackMagic Camera App will follow later. Stability, stress tests and temperature measurements will follow soon.
Any suggestions concerning test approach and setup are welcomed.
Here goes reality (some “Real Camera” manufacturers with external USB-C video recording designed by the “still image crowd” (?) could learn a thing or two - I’m also looking at you Panasonic

For all lenses - 0.5, 1 (,2) and 3, the ProRES HDR 4k 25fps video 25-26s lands around using 2.4 GB (or a bit less, than 100 MegaBYTE per second). In log mode (only tested standard lens until to now) the same settings and motif use around 1.86 GB or roughly 75% of the space required for the HDR setting.
A short, quick and dirty test of USB-C connection (far more at a later time), with a Samsung T7 Shield (that can "munch a lot of data" on a sustained basis - also when copying to drive from a MacBook Pro 14 M1 Pro), copying to disk is extremely fast (actual speed tests later).
No surprise was, that on a fully installed 256GB iPhone 15 Pro (all data transferred from a current iPhone 12 Pro 256GB) there is around 26-27min "free space" and after initial use of "a few" GB for test recordings, there is still 23min "free space" for ProRES HDR 4k 25 fps internally:
- With 91GB of 256GB used, there is space for 23min in ProRES 4k HDR 25fps. Not bad.
- IMG_4449.PNG (489.46 KiB) Viewed 25595 times
The big surprise comes, when I add the Samsung T7 Shield 4TB drive to the USB C port:
- Roughly 11 hours on the 3.67 TB disk where 138GB was already used for tests. I can probably learn. to live with that
- IMG_4448.PNG (491.11 KiB) Viewed 25595 times
I think it will suffice for most recording sessions/days, with daily backups to other media, eeeh..?
Just for the heck of it, I connected one of my Crucial MX500 2TB SATA SSD's used with my Atomos Ninja V for recording Lumix S5 12-bit 5.9k PrRES RAW 25 fps material (roughly 250+ MegaBYTE per second) via a SATA to USB-C cable (always nice to be able to use the same media), and the SSD was immediately recognized by the iPhone. The completely empty drive leads the iPhone Camera App to the conclusion, that I can record 344 minutes of ProRES 4k HDR 25fps material (or thereabouts). Let's be nice, and say at least 5 hours of recording (with the Ninja V and ProRES RAW as specified above, there is seldom room for more than roughly 80 minutes, so speed should not be a problem either in this setup).
Apple officially accepts ExFAT and APFS formatted external media.
Important feature for external recording use.
I found an oooold USB-C Hub (inateck) in a dark corner of my "miscellaneous thingys" box. Connected USB-C power to the hub. And connected the Samsung T7 Shield to the hub (USB-C, but USB A would probably also work).
Lo and behold. The iPhone recognized the USB-C drive. The Camera App still stated 666 min recording time capacity, and really, really, REALLY important: The iPhone also charges (from PSU or PowerBank). Now we're talking real usability!!!
- Write to external disk AND charge/power everything!
- IMG_4468.jpg (93.46 KiB) Viewed 25595 times
Short test copying from the Fotos App to the T7 worked as expected.
A short video recording of some 10 seconds (around 700+ MByte) also went as expected. ProRES 422HQ is, what I call "acceptable" most days (not possible to add screendump of MediaInfo)
Calculate 15W for the hub and up to 30W for the iPhone and SSD. This will probably never be exhausted in prolonged use.
Played back on my Mac: No problems at all. Now, we're talking (and "real camera" manufacturers could start listening
Now... what if... hmmm... I get ideas now... reserved for later.
Regards and remember to have a bit of fun every day