I currently have the option to purchase a Schneider Artar lens with a Prontor sh utter. All my life I have used only Copal--and occasionally Compur--shutters. Can somebody please explain to me what the main differences are between these th ree shutters, and how the Prontor compares to Copal and Compur--in terms of accu racy, reliability, ease of use, overall quality, etc? Does the Prontor have any disadvantages or negative features? What is the "street word" on this shutter?
Also, why does Schneider choose to offer its large-format lenses in three different brands of shutters, instead of just one?
Thank you.
Nick Rowan
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