Once out of the mount, and after the "adapter" is removed- disassembly of the two lenses is identical. Note that the Rigid lens is not just a collapsible Sonnar in the Rigid mount- the name ring is different, close to the F1.5 lens.
The adapter unscrews, the retaining ring is held in by one set screw.
![Rigid_Remove_Spacer_Then_Retain_ring.JPG Rigid_Remove_Spacer_Then_Retain_ring.JPG](https://rangefinderforum.com/data/attachments/92/92836-f4f6d7406b850e57e3cc013eb4e168f9.jpg)
Take out the screw that links the aperture ring to the mechanism, and remove it.
![Unscrew_Aperture_Link_Take_Aperture_off.JPG Unscrew_Aperture_Link_Take_Aperture_off.JPG](https://rangefinderforum.com/data/attachments/92/92837-b5d0cb903d89f2af12dd5de56aa380f6.jpg)
You now see the set screws that hold on the name ring. Take them out, and unscrew the name ring.
![Remove_Filter_Ring_Set_Screws_Take_Off_Namering.JPG Remove_Filter_Ring_Set_Screws_Take_Off_Namering.JPG](https://rangefinderforum.com/data/attachments/92/92835-18754a2a4827587db85dd219e03d21e6.jpg)
The front element and middle triplet lift out, they are in Brass fixtures. Note these and the rear fixture all have the last digits of the Serial Number on them.
![Optics_Out.JPG Optics_Out.JPG](https://rangefinderforum.com/data/attachments/92/92834-bb3659be19c0ee54240c7b7e38a0e782.jpg)
![Optics_Lift_Out.JPG Optics_Lift_Out.JPG](https://rangefinderforum.com/data/attachments/92/92833-827c74740ea1fea4ad7e347b3247b8e0.jpg)
![Clean_Rear_InPlace_Or_Unscrew.JPG Clean_Rear_InPlace_Or_Unscrew.JPG](https://rangefinderforum.com/data/attachments/92/92832-a4f7c75e78f621a2d5372a3efffc1aa5.jpg)
The adapter unscrews, the retaining ring is held in by one set screw.
![Rigid_Remove_Spacer_Then_Retain_ring.JPG Rigid_Remove_Spacer_Then_Retain_ring.JPG](https://rangefinderforum.com/data/attachments/92/92836-f4f6d7406b850e57e3cc013eb4e168f9.jpg)
Take out the screw that links the aperture ring to the mechanism, and remove it.
![Unscrew_Aperture_Link_Take_Aperture_off.JPG Unscrew_Aperture_Link_Take_Aperture_off.JPG](https://rangefinderforum.com/data/attachments/92/92837-b5d0cb903d89f2af12dd5de56aa380f6.jpg)
You now see the set screws that hold on the name ring. Take them out, and unscrew the name ring.
![Remove_Filter_Ring_Set_Screws_Take_Off_Namering.JPG Remove_Filter_Ring_Set_Screws_Take_Off_Namering.JPG](https://rangefinderforum.com/data/attachments/92/92835-18754a2a4827587db85dd219e03d21e6.jpg)
The front element and middle triplet lift out, they are in Brass fixtures. Note these and the rear fixture all have the last digits of the Serial Number on them.
![Optics_Out.JPG Optics_Out.JPG](https://rangefinderforum.com/data/attachments/92/92834-bb3659be19c0ee54240c7b7e38a0e782.jpg)
![Optics_Lift_Out.JPG Optics_Lift_Out.JPG](https://rangefinderforum.com/data/attachments/92/92833-827c74740ea1fea4ad7e347b3247b8e0.jpg)
![Clean_Rear_InPlace_Or_Unscrew.JPG Clean_Rear_InPlace_Or_Unscrew.JPG](https://rangefinderforum.com/data/attachments/92/92832-a4f7c75e78f621a2d5372a3efffc1aa5.jpg)
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