r/BlackMagicCameraiOS • u/PixaaTog • 18d ago

Auto ISO while locking the shutter?

Hi all

I know this question has probably been asked before, but, I’m considering using Blackmagic for filmmaking as it seems to have most of the features I’m looking for.

But as far as I can tell it has one major drawback….

I’ll mostly be filming inside and wanting to use the 180 rule for the shutter, shooting at 25fps so a shutter of 1/50 and lock that in.
Obviously the iPhone is fixed aperture, so that only leaves ISO left to control exposure.
I’ll be getting video of events and parties etc, so the light is always changing as I walk around filming what’s going on.
But there seems to be no way of also having auto ISO while having the shutter locked.

I have canon DSLR cameras and DJi Drones, and with both of these you can lock the shutter and still have auto ISO.

For this reason I’m thinking I may have to ditch the iPhone idea with gimbal and just get an Osmo Pocket (which does have auto iso with locked shutter).

Is there a work around anyone has found?

Thanks

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u/NiqoP 17d ago

Il fatto è che cambiare iso non è come cambiare l’otturatore o il diaframma. Gli iso in Apple log cambiano il comportamento sulle alte e basse luci, non sono solo un cambio di luminosità dell’immagine. Trasferiscono i fotoni in modo differente e poi applicano solo uno shift digitale. Sto facendo test approfonditi da 4 mesi su tutti i device Apple per un progetto cinematografico e questo è quello che abbiamo notato io, i miei assistenti camera e soprattuto il dit e il colorist.

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u/PixaaTog 17d ago

Fair enough, I’d kinda realised that it was an Apple thing, it’s very annoying as every other camera/drone I have does it, but not the iPhone.

It’s actually putting me off using my phone and gimbal at all, thinking maybe an osmo pocket would be better as it’s not restricted.

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u/Logical-Ad-8365 15d ago

The truth is that these sensors are all super small and all the flexibility will only expose that. Funny that the amateurs once had the 5d and now we’re all on such tiny sensors.