![]() ![]() An Auto Black Balance routine identifies the ‘static’ noise to the camera’s image processor, which will then do a better job of hiding it. Officially, one should Auto Black Balance after every ISO change). It’s recommended to run an Auto Black Balance on a camera at the start of every shoot or if the camera changes temperature (e.g. And remember, this is a still – in reality, it’s boiling away and drawing attention to its self. So, I’m expecting a little noise, but not much. So, due to the balance of the lighting (couldn’t black the room out, couldn’t change rooms), we were working at 1250 ISO – roughly equivalent to adding 6dB of gain. It rapidly became obvious that we’d found the perfect shot to demonstrate the dangers of noise – and in particular, the C100’s some-time issue with a sort of pattern of vertical stripes:Ĭlick the images below to view the image at 1:1 – this is important – and for some browsers (like Chrome) you may need to click the image again to zoom in. Whilst we set up, I shot some tests to help Alex with tuning his workflow for speed. Scenes that contain large areas of gently grading tone pose a huge problem to an 8 bit system: areas of blue sky, still water, or in my case, a boring white wall of the interview room. ![]() In some situations, it can be an absolute menace. Most of the time this is invisible, or a pleasant part of the picture. The Canon C100 is an 8 bit camera, so its images have ‘texture’ – a sort of electronic grain reminiscent of film. ![]()
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