I became very interested in the self portrait technique used by Adam Broomberg and Oliver Chanarin. They used a technique called by-proxy self portraiture in their collaborative work called Ghetto, which is where the photographer frames and focuses the camera but the subject takes the image of them self with a cable release and at any time they want. This technique made the subjects feel more comfortable with getting their photo taken and it also meant they were engaged with the actual process of image making, which to me makes a portrait quite unique to each subject and very powerful.
I started experimenting with this technique and found it very impacting for studio work. If you think the whole scene is controlled by the photographer or their assistant so having this slight twist where the subject take some of the control is quite a nice touch i think when it comes to portraiture.
Here are a few images from Ghetto, a series where Adam Broomberg and Oliver Chanarin documented the lives of patients and a mental health clinic. they used this technique as it was quite hard to get each patient to understand what was going on, some may not have known that they were getting a photo taken and may not want one taken if they would have known. so there is an ethical limitation when it comes to mental health and images, so these two photographers came up with a very smooth idea, here are their results.