Several Soft Focus lenses compared

[Adamphotoman]

I think that the rounder aperture would be better with soft focus and out of focus highlights. If one were to be using a sharp lens for copying artwork it should not affect the image as much.

[Old-N-Feeble]

I did not realize that Copal Shutters had more than 7 blades. Yours must be an older version.
I just purchased a Compur #3 with a Symar 240 but the threads are the wrong size in the front to accept the front half of the Imagon.

I don't know about others but mine does have ten blades. The iris isn't "very" round but it's rounder than most newer shutters. Mine is a silver ring version.

Your Imagon is made for either a Compound or Copal 3S.

[Adamphotoman]

The 200 mm H5.8 is sitting nicely in an older Compur #3 which used to house a Convertible 300mm Sironar. I moved the 300 Convertible Sironar into a Sinar DB board [Copal style with manual red button to change apertures]. I don't need the shutter just the F stops. As I use the 300mm lens primarily for copy, I do not think the less round aperture will make a huge difference.

The 135 mm Wollaston Meniscus lens fron Reinhold now is equipped with 11 cardboard Waterhouse stops, and so the jumps from one to the next are less pronounced.

There are 12 partial or full stops. I will add 4 to a post. Hopefully they remain in order.

[Adamphotoman]

Next 4

[Adamphotoman]

Last 4

Note: I did not refocus between shots. As I shot each I first made a preview with a small wallet sized Color checker. You may notice that some of the flowers have moved, This is because they were supporting the Color checker. The background is very marked and it is interesting which f stops begin to show the marks.

[Old-N-Feeble]

Those are nicely gentle progressive steps.