![lens - What is the little metal piece attached to the aperture ring in some Zeiss lenses? - Photography Stack Exchange lens - What is the little metal piece attached to the aperture ring in some Zeiss lenses? - Photography Stack Exchange](https://i.stack.imgur.com/XmG4I.jpg)
lens - What is the little metal piece attached to the aperture ring in some Zeiss lenses? - Photography Stack Exchange
![Re: how to tell if the aperture ring is working on a manual lens?: Micro Four Thirds Talk Forum: Digital Photography Review Re: how to tell if the aperture ring is working on a manual lens?: Micro Four Thirds Talk Forum: Digital Photography Review](https://2.img-dpreview.com/files/g/TS560x560~557458.jpg)
Re: how to tell if the aperture ring is working on a manual lens?: Micro Four Thirds Talk Forum: Digital Photography Review
![Front view macro shot of a vintage photography fast aperture prime lens with inscribed indented markings on silver aperture ring and black metal barrel Stock Photo | Adobe Stock Front view macro shot of a vintage photography fast aperture prime lens with inscribed indented markings on silver aperture ring and black metal barrel Stock Photo | Adobe Stock](https://as2.ftcdn.net/v2/jpg/03/29/88/73/1000_F_329887340_9vx0kxq4FmBAnpDo7u6ay1MERIKV5dX5.jpg)
Front view macro shot of a vintage photography fast aperture prime lens with inscribed indented markings on silver aperture ring and black metal barrel Stock Photo | Adobe Stock
![What is “A” on this lens's aperture ring? You need to push a button to lock in into place. Pentax k1000 with smc Pentax-A 50mm f/2.8 : r/AnalogCommunity What is “A” on this lens's aperture ring? You need to push a button to lock in into place. Pentax k1000 with smc Pentax-A 50mm f/2.8 : r/AnalogCommunity](https://preview.redd.it/what-is-a-on-this-lenss-aperture-ring-you-need-to-push-a-v0-bksuuyj2qc5a1.jpg?auto=webp&s=2eda1ddba91a41bb8a7cf95597456d982c43ec29)
What is “A” on this lens's aperture ring? You need to push a button to lock in into place. Pentax k1000 with smc Pentax-A 50mm f/2.8 : r/AnalogCommunity
![Rayqual Nikon F Lens (with aperture ring) to 4/3 Four Thirds Camera Body Lens Adapter: shop.CameraQuest.com Rayqual Nikon F Lens (with aperture ring) to 4/3 Four Thirds Camera Body Lens Adapter: shop.CameraQuest.com](https://shop.cameraquest.com/images/products/8692789.jpg)