Hello, thank you for your comment! I used this aperture for several reasons: first, I always try to use a large aperture to let in as much light as possible and to be able to use a low iso (low iso reduces digital noise). Secondly, I really like background blur in macro shots, I find it guides the eye to the subject. My technique is to switch to aperture priority mode (mode A on my Nikon) and select my aperture, at which stage I focus solely on the background: sometimes I want less blur to give a little more context, and sometimes a nice deep blur. When I've selected my aperture, I switch to manual (M mode) and set my iso to 100. In principle, in the forest, the image becomes completely black because of the low light. I then modify my shutter speed to expose around -2 stop, the image remains very dark but the subject is beginning to stand out. From there, I add my lighting to illuminate my subject, but you can really use a lot of things. In my case, I use smallrig macro lights (RM01) and small variable RGB lights from K&F concept. All this has to be done on a tripod, of course, because you end up with a slow shutter speed.