Many mirrorless cameras have an articulated LCD screen these days and one advantage of this is how easy it makes using a camera attached to a macro bellows. No more fear of poking yourself in the face with a focussing rail while trying to squint through an eyepiece. The easy adaptability of MILC mounts means that almost any old set of bellows can be used too. Like this venerable Pentax set - The back end is fitted with an M42 to Sony E mount adapter, and the front end has a reversed enlarger lens fitted. The lens reverser was made from an LTM T-mount and a cheap 43mm UV filter with the glass removed. Here's a selection of enlarging lenses tested on the above rig for their macro suitability. And the results at about 3.5x magnification with the bellows almost at full stretch. 1. Durst 50mm f/2.8 Neonon 100% crop 2. Schneider 50mm Componon-S 100% crop 3. Komuranon-S 50mm f/3.5 100% crop 4. Apo-Rodagon N 50mm f/2.8 100% crop The subject was a 9.5 mm diameter Leica-type cable release end. Boring, but the shiny plated metal shows up LoCa like almost nothing else. As you can see, none of the lenses, including the Apo-Rodagon, was free of LoCa at this magnification, but only the Komuranon shows it to an unacceptable degree, IMO. If you need to get even closer, a 40mm f/3.5 Hoya 'Super EL' allowed over 4x magnification. 100% crop The crop here is verging on microscopic magnification, and in my view isn't at all bad.... considering. The bellows extension turns the marked f/5.6 aperture used into an effective f/25 or thereabouts, with consequent diffraction softening. Just some food for thought. An old bellows like the above can be had for a few £/$/€. And enlarging lenses can still be bought a lot cheaper than a proper macro lens. Add a couple of adapters, a bit of DIY, and you could still be up-and-running with a high-magnification macro rig for under 100 £/$/€, if you buy wisely. The Durst Neonon lens, for example, was bought quite recently for only £10 and competes with the Apo-Rodagon extremely well. As does the Componon-S. I just wouldn't go out of my way to seek out a Komuranon-S enlarging lens though personally.