They are a good way to keep your filter holder slim and avoid Vignetting and stray light- particularly when using the Polariser at the front of your holder. Continue reading
The attached image was kindly taken by Alpa to demonstrate the FULL images circle of these lenses when used on the 33×44 CMOS sensor.
For these tests – the Alpa 12XY camera body was used with a Phase One IQ250. Continue reading