>>3255275I can't speak for Praktica, but my Pentacon six has some uneven shutter speed or the 2nd curtain doesn't close, if you go below 1/15th.
After firing it a few times the curtain usually closes now, but often with large delay.
I've read that this might be due to the lubricant going bad.
Camera sure looks good tho.
Wish I had the metering viewfinder.