Kodak Aero Ektar 178mm f/2.5 was a world war 2 era lens adopted to work with Graflex Speed Graphic 4x5 Camera with a focal plane shutter. I have seen this lens being used with Sinar Shutter & other third party shutters with other 4x5 cameras. Although I own a Sinar shutter, I like shooting this with Speed Graphic because it makes a beautiful, portable pair. The lens needs to be adopted to work with Speeds, the main component of this process is getting the lensboard to fit. Jo Lommen makes lensboards to fit a couple of Speed versions, which is I what I use my Aero Ektar with. This combination when shot wide open is a bokeh machine. It creates such a dreamy look, it makes the pictures look 3 dimensional almost. Hopefully I get use this combo more in my photography.