(mechanical vignette/fall-off) were intended as this combination reaches an image circle of 108 mm and therefore 20 % beyond the official image circle of 90 mm indicated by Rodenstock.
Sadly, Rodenstock insists on placing that mechanical vignette device inside their lenses. I can assure you that this lens, the 40mm, and even the 28mm would work well beyond that imposed limit by Rodenstock. The 40mm would easily go to at least 22mm, but starts to hit the mechanical vignette device at around 16mm. The Schneider's on the other hand don't have the device, but they can't make that much shift as the detail smearing/color loss is terrible. I have taken the 28mm to 11mm (it hits the vignetting device at 7mm) and the parts of the image not destroyed by the imposed vignette are fine.
I am very interested to see what DT's testing will show, as the color cast that Alpa received i.e. purple/orange is pretty harsh to me. Yes the LCC seems to correct it, but it's really hard to tell anything from the final image as it's so small. I am assuming this was shot at iso 100, and if you were wanting to shoot the same series at iso 400 or even 800, the resulting noise/color cast may become a bit more destructive. Still hard to tell without full sized samples.
Glad to see more results.
Paul
