This is my first real macro shot with my Sony a850.

I acquired an old Canon auto-bellows for Canon manual focus FD lenses and this was my first shot with the unit. It was taken using “Release without Lens” since the camera has no electrical coupling to the lens or the bellows.
I used A mode where I chose ISO and the camera chose the shutter speed. The aperture was set manually on the lens. In this first case the two second timer was implimented so that there was a mirror lockup.

The dual cable unit furnished with the bellows only stoped down the old breech lock Canon FD 50mm f1.8 lens.

I extended the bellows unit pretty much to maximum to achieve the greatest magnification at the expense of vignetting. I had to order an adapter for the Canon FD auto-bellows to mate to my Sony/Minolta Alpha mount camera.
I chose a Fotodiox adapter because it will allow me to remove the 1.4X glass elements in the adapter itself. In this first shot I left the elements in, but removing this assembly will ideally increase image quality.

I’m fairly impressed right out of the starting gate. I took a photograph of a random image I had previously printed on my Epson R1900 and didn’t pay much attention to lighting or orientation of the flat surface.
As close as I can figure, the captured image is roughly 4:1, meaning the image projecting onto the 35mm 24MP sensor was 4 times life-size. If this had been a print scan, it would translate to roughly 15,000 pixels per inch.
The 1:1 1350 pixel wide section you see here (outlined in red in the down-resed insert) is a little less than 3/32 of an inch wide on the original print that I used as a source.