The BulbMogul
Well-known member
No idea what so ever as I would never use a outside converterMay I ask you The BulbMogul how does the Z 400/f2.8 built in teleconverter work; does it reduce the image quality much or is there a significant improvement if stopped down for example one f stop? Is autofocus speed affected by a noticeable amount?
Regards, Juhani