The Heliar has a great smoothness to the images it forms. See attached for an example... My toddler's stuffed animal...focus on the mouth. Notice the sharpness in the threads, yet an overall smooth or round appearence to the entire image... 150/4.5 coated, at f8
Also see my Heliar Article http://antiquecameras.net/heliarlenses.html
Best
Dan
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