It is better to shoot in the program auto "P" mode. and it’s even better to have a second portrait lens, you can completely manual, for example, Helios 77M6 1.8-50, and you will be very pleased with the result - there is practically no noise, a clean picture. in normal shooting, the 18-135 3.5-5.6 lens works well. Its pros: fast autofocus, ISO up to 800 workers, 1600 only during the day Cons below: in auto mode, it tries to set ISO 1600, it is better to shoot in software auto "P" mode.
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