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View Full Version : Schneider 350mm f/11 Apo-Tele-Xenar accessory lens barrel



Rayt
17-Sep-2010, 18:26
I bought the Schneider 350/11 apo-tele-xenar with the accessory extension barrel but have no idea how to mount the lens onto the barrel. Any ideas?

Arp
17-Sep-2010, 21:29
The extension tube has internal threads. The mating external threads on the lens have a thin threaded covering ring that you need to remove.

Rayt
17-Sep-2010, 21:55
There is a ring but it would not come off no matter how hard I twist. The next step would involve the vise grip and running hot water but I don't want to risk it.

Arp
17-Sep-2010, 22:51
The ring is very thin. As with threaded filters, if you try too hard it only jams. Less force, more evenly applied around the circumference should work. No Vicegrips!

Don Dudenbostel
20-Sep-2010, 22:10
I use my finger tips with gentle pressure evenly distributed around the ring. It then unscrews with little force.