Hacking a Vintage Lens

Despite having lots of more essential jobs to do, I've been spending some R and R time playing with old lenses. Here's one that I've enjoyed  messing with:

My guess is it's originally from a quarter-plate camera, given that it has a focal length of 51⁄8" (130mm). There's no shutter, but it has aperture settings running from f7.7 maximum down to f45

The engraving on the lens is as follows:
     Busch Anastigmat Ser III No.2   F:7.7  Foc.51⁄8 ins   Pat. No.19504
     R.O.J.A.   Vorm Emil Busch,  Rathenow

The chance to see what it could do came with the acquisition of an Illumitran (a top-end slide copier from the days when film transparencies were a central feature of AV production and repro). I can imagine lots of potential creative uses for the Illumitran's working bits, but for this experiment I needed to liberate the bellows that sat on top of it.

The camera end of the bellows came with a Nikon bayonet mount adaptor, while the lens end came with a 60mm enlarger lens, held in place by a couple of thumb screws. It was simple enough to swap the enlarger lens with my vintage one and mount the whole combination on top of a tripod.

Focussing was done with the lens wide open at f7.7, racking the lens back and forth with the bellows. All my test shots were then taken by stopping the lens right down to f45 and shooting at whatever slow shutter speed my hand-held light meter suggested.

My first shot was of the top of the South-West tower of Lincoln Cathedral, taken from the art school car park. The photo below shows a wider view of the car park with the tower in the background. My estimate is that the top of the tower was at least 300ft (90m) from where I stood to take the photograph.

The next shot was a portrait, taken in the shade of the car park trees. I wanted to include a distant view of the city in the background. The exposure was f45 @ 1/4sec. Tonally, the original image was very low in contrast, with lots of bluish haze. Hard tweaking with levels and curves in Photoshop was needed to get a reasonable range of tones.

 

The final shot was taken  near the North-East corner of the cathedral and is of the statue of the poet Alfred, Lord Tennyson.

This statue, which is larger than life-size, was photographed from about 90ft (27m) away. The exposure this time was 1/3sec @ f45. A slight adjustment of levels was needed to improve the tonal range, but otherwise it's very much how it came out of the camera.