EX1 adjusting color

[Bob Hayes]

Rafael

Great to have you on board. I wish there was a lot of discussion here. Even it is just people screwing around and posting pictures and results. With out vector scope, waveform monitor, and the knowledge to use them it is difficult to document repeatable results. But just by screwing around with the cameras and trying to achieve looks we can learn a lot. Sometimes those of us with our heads jammed in a scope loose track for the end results. I’d encourage anyone regardless of their skill level to share. But also be aware that we who appear more knowledgeable are just screwing around also. So experiment and test but be careful when doing it on real life projects.

Bob Hayes

[Bill Ravens]

Hi Rafael…

Dynamic range is a rather curious topic when it comes to the EX1. The dynamic range of the EX1 is rather variable depending on a number of items. For example, selecting a gain value of -3dB will limit the super-white values recorded by the EX1 to 103%, as opposed to 109% IRE when the gain is set to 0 dB. Furthermore, the CINE gamma settings use a knee in the highlights to roll off the highlights, rather than truncate them, providing more data in the brighter regions of the image. I’ve found Cine1 to yield about 11 stops of range. Cine4 will yield a larger range, perhaps as much as 12 stops, however, this is done by rolling the gamma knee off sooner, resulting in low contrast thru mid to upper highlight values. For this reason, I tend to avoid Cine4 for bright outside scenes and use it, primarily, for indoor scenes where the contrast is not as high. Cine2, of course, will limit IRE values to no more than 100%. All other gamma presets demand some post processing to bring the illegal values of super-whites back into legal range, but, the advantage is increased highlight detail.

My point is, high dynamic range isn’t the holy grail of shooting performance. If you don’t intend to color grade in post, then one is obligated to use Cine2.