I mean if Arri even tried to make a $1300 camera, they'd fail miserably. Blackmagic has to pick a price first and make a camera for that market, so they have to skimp out on so many things. Arri doesn't have to think about it's chip set, they use the best period and whatever it costs to make, plus profit, is what they charge the customers. It's really not fair to compare a nearly $80,000 camera to a $1300 camera. The Alexa has 1.5 stops more DR than the BMPCC4K and its range is better balanced. To have a reference, here is the same diagram for an Alexa. But then Blackmagic specifically advises not to shoot at 1000 ISO and instead switch to 1250 ISO "for cleaner results".Īdding some info. Rebalancing the dynamic range by rating it at a higher ISO might help with those highlights. I have noticed some harsh video-like looking clipping in the otherwise great looking demo footage of the camera. Rating the camera at 1000+ ISO (400 ISO native), gives the more balanced DR at the expense of noise. Maybe people just always ETTR and may therefore never notice this as they never refer use middle grey as a reference.
I haven't seen or read anyone talk about it online yet.
Shooting at 100 ISO for example, feels like a terrible idea with only 2 stops of DR in the highlights, and a ridiculous 11.1 stops under middle grey. What I want to talk about here is the significant unbalance between highlight and shadow latitude especially at lower sensitivities. We can also see that the dynamic range is inferior at the 3200 ISO setting and beyond which is not surprising. Reading the manual of the Blackmagic Pocket Cinema Camera 4K (what a long name…) I stumbled upon this very interesting graphic:Īs we can see, the curve resets at 1250 ISO to adapt to the new sensor amplification.
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