All of our lenses are in like new condition. Please keep in mind that a serial number is a unique feature and will varies on every single lens. We have 2 slightly different sizes (it refers to the lens length only): diameters are the same but the length of the narrow and wide barrel are different. Please see our last image for exact measurements. If you need a specific size than please add a message with measurements. Otherwise, the optical lens size are the same.
These lenses are projection lenses. The mount is very simple: straight or slide-in.
you may require an adapter depend on your project. May fit into a VNEX. There is many applications for this OUTSTANDING quality lens. Please do your online research, and you will find how different people enjoy high quality photography with this light and simple piece of equipment by famous Carl Zeiss Jena.
These lenses can be used in different DIY photography or astronomy projects.
Some ideas for one of those projects can be found on Phillip Salzgeber's YouTube channel:
Tilt lens: https://www.youtube.com/watch?v=XrTItndjykU
Here is a result of using a tilt lens: https://www.youtube.com/watch?v=de9JaqFQlQc
![](https://lh3.googleusercontent.com/WiLIP0umuO_eLNhmUoRrayVjId2eBu1uN2MbLLKwdQwN9bKO4bAUwKMxlUeBtgpuasTjm8Als7kX3joc_Ptk75elJDll0IMKrDLs6m4AkrlRfEXVgi8iiztPSb_lAP_PFkevu3j5dGY=w2400)