How does Sony nex-7 digital shoot highly sensitive film?

I don't quite understand what you're asking. What is a good high-sensitivity film? The composition and artistic conception of shooting can't be taught.

Setting high sensitivity (iso greater than 800) generally means that in very dark environment, it is necessary to increase sensitivity to maintain the safety shutter required for hand-held shooting. At this time, shooting will produce more and obvious noise, which needs to be denoised by software later. Some people like to keep these noises to achieve some artistic effect. Generally speaking, in order to achieve the best image quality, we must first ensure the maximum aperture of the lens, and then gradually improve the ISO. Although the maximum aperture is usually not the best image quality, it will always cause less loss to the image quality than opening ISO. Another point that should be paid attention to in dark environment is that it is best to ensure that the shooting is illuminated by ambient light, so that it may not be necessary to turn up the ISO when measuring the subject. In addition, in dark environments, such as at night and indoors, lighting will be relatively complicated. At this time, it is best to pay attention to the setting of white balance, and it is best to set the white balance manually to achieve the ideal color temperature environment.

Another situation that requires high sensitivity is that a high-speed shutter is needed when using a small aperture. For example, if you want to shoot a waterfall that flows at high speed but is still magnificent and birds in the air, you need a high-speed shutter. It is not difficult to reach a shutter of a few thousandths of a second in broad daylight, but if you want to ensure a certain depth of field, you need to shoot with a small aperture at the same time. At this time, low ISO is not acceptable ~ However, even with high ISO, the image quality will not be greatly affected, and there is less noise, so don't worry.