I'm doing a little format research and comparing film to digital sensors I'm struggling to match things up with the Alexa XT/SXT sensor. According to Arri (alexa sensors)
The camera's custom developed CMOS Bayer sensor has the same height and width as a 35mm film frame. This has a number of advantages. The Super 35 mm width allows a cinematically shallow depth of field as well as plug and play use of the unparalleled range of Super 35 PL mount lenses.
What exactly are they referring to here?
Super 35mm refers to the original silent film aperture of 24.89mm x 18.67mm (1.33) Looking at the SXT manual, and as shown here) the sensor dimension size at different formats are:
- 28.17 x 18.13mm (1.55) for Open Gate.
- 23.76 x 17.82mm (1.33) for 4:3 mode
- 21.27 x 17.82mm (1.2) for 6:5 mode
- 23.76 x 13.37mm (1.78) for 16x9 mode
None of these made the original Super 35mm format size, what am I missing here? Is it simply that in 4:3 mode the dimensions are similar enough to Super 35mm to not make a significant difference?
Edited by James Malamatinas, 27 June 2017 - 12:23 PM.