I was simply agreeing with ND64's statement that the C50 most likely has 12-bit video readout in standard FF 16x9. There is a connection between electronic shutter limitations and video readout speed, although the S35 sensor crop can allow for higher bit depth or higher readout speeds. Moreover, cropping into S35 will not reduce noise. It will have the oppositive effect. The sensor is also not dual gain like the one in the Panasonic S1II and doesn't offer any of those features. The only way you are getting more DR out of a sensor crop is to switch to a higher bit depth (13 or 14 bit). If you compare the C50 with the R5C, which has 12-bit video readout, you see almost identical latitude (4 stops over and 3 stops under) as demonstrated in the CVP review:
I will admit that the C50 has a beautifully sleek design, and may be worth picking up for the open-gate mode alone, but I don't see much in the way of image improvements over the R5C that I already own. I guess it is a camera made for those who don't have an R5C or those who may need another compact body. In that case, however, I would rather go with a camera that has IBIS, high ISO performance for low light, and greater DR in highlights and shadows. These are qualities I miss in the R5C and that have apparently not been addressed in the C50.