An interesting article by Sony ‘guru’ Alistair Chapman about recording and exposure techniques on the Sony F55/5 –
Prior to version 3 of the F5 and F55 firmware, Cine-EI was only available in raw mode with the R5 recorder attached. Now from version 3 onwards Cine-EI operation can be selected in both raw and non raw modes. You no longer need to have the R5 attached to use Cine-EI. EI stands for “Exposure Index” and in many respects Cine-EI mode mimics shooting on film.
The latitude and sensitivity of the F5/F55 like most cameras is governed by the latitude and sensitivity of the sensor and processing, which is 14 stops. Different amounts of conventional gain or different ISO’s don’t alter the sensors actual sensitivity to light, only how much the signal from the sensor is amplified.
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