I recently acquired another lens - The Mitakon 65mm f1.4. For the most part I was pretty satisfied with the results from the 32-64mm f4 Fuji lens for portraits anyway. But at some distance, meaning more than a few metres away the background in some instances with not sufficiently out of focus to give a really pleasing result. What you’re seeing here is just a little experiment. You might know that a close up lens which you can buy at a relatively cheap price can produce an image at a significantly shorter distance than a bare lens is capable of. Either a close up lens or in this case, an extension tube.
The extension tube here came with the 120mm GFX lens in my original purchase of the GFX100S. The Mitakon 65mm happens to have a GFX mount so fitting the two together was easy. I tried a few shots hand held but results were not quite as good as a tripod and triggering the shutter with a phone app. The DOF was ridiculously thin. Looking at this image I would say almost less than 1mm!
The Mitakon anyway has a very smooth fall off when it comes to background blur. I have yet to try it without the extension tube for a portrait shot but just taking random images I can see that a similar albeit reduced blur and fall off is already excellent.
In using the camera’s close focus (magnification) function I felt I was looking through a microscope at the yellow fibres. No sharpening has been applied to this image. I look forward to posting portrait style images as I get the opportunity.