Mike Overly wrote:
I use both converters with my A70, & both are best used at the
extreme wide/telephoto end for their respective purposes.
There is vignetting on the A70 with the teleconvertor until you get
out to 80 mm or so.
Do you think the wc and TC DC52s would vignette at the extreme ends
of the Pro1?
Extremely. Look at the front diameter of the pro1 lens and the rear diameter of the TC-DC52. I'm betting that even at full telephoto your image would be a small circle in the center of a big black nothing.