I’m testing the inexpensive Fujifilm MCEX-16 16mm extension tube. It’s a hollow slim barrel with electronic contacts but no glass… just a tube. What’s the point? It allows you to get closer, much closer, and still gain focus. I find it’s easiest to set aperture, big for crazy shallow and small for wider depth of field, first. Then, back up and edge forward to find the sharpest point. I use manual focus so that the peaking assist is engaged.
Here are a few quick examples (using the Fujifilm 35/1.4), both rather abstract in form.
Initial impression? I like.