VictorM.
Well-known
My Iskra has one of these Series 5 to 6 step-up rings. The thread pitch doesn't quite match, but it's still quite secure. add a Series 6 hood and filter and you're laffin' for less money than a coffee at Starbucks.
http://cgi.ebay.ca/3-SERIES-5-TO-6-...567483145QQcategoryZ30040QQrdZ1QQcmdZViewItem
http://cgi.ebay.ca/3-SERIES-5-TO-6-...567483145QQcategoryZ30040QQrdZ1QQcmdZViewItem