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Old 04-17-2019, 03:06 AM   #1
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Blackmagic Cinema Camera 2.5K

Hi all, I have 3 questions:

1. Regarding the Blackmagic Cinema Camera 2.5K, I think the crop factor on the sensor is about 2.3x. I read somewhere that because this camera’s sensor is small, it is very hard to get a cinematic shallow depth of field. This confuses me because I read that long lenses and therefore long focal lengths produce shallow depth of field and the longer the lens, the shallower the depth of field. So if a 35mm lens is placed on the BMCC, it will therefore be an 80mm lens. Therefore, would this not produce a shallow cinematic depth of field? Also, a 50mm lens will therefore become a 115mm lens, making the depth of field even shallower! Then, why do people still say that this particular camera is very difficult to produce a shallow cinematic depth of field? Have you used this camera for yourself to be the judge?

2. Between the Blackmagic Cinema Camera 2.5K and the Blackmagic Production Camera 4K, apart from the difference in resolution, price, shutter type and media storage etc. which camera would you choose? Do you think the Blackmagic Cinema Camera 2.5K is great for making feature films that can be played at actual cinemas and look as if they were shot on an Arri Alexa?

3. I have heard of 1080p HD films that were blown up to 2K and 4K etc. without loss of quality. Can you comment on this? Do you think the Blackmagic Cinema Camera 2.5K can blow up a 2K master successfully to 4K without losing quality? I am asking this in the event one wants to meet the Netflix 4K requirements for movie submission.

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