The structure of infinity is different. This should be infinite. Fortunately, it supports return and exchange. I have returned the goods and bought a new one with a slightly better quality.
If use the infinite distance .Do I need to delete the 12.7mm lens?
No, when using infinity objectives the 12.7mm 50mm serves as a proper tube lens so it’s definitely needed.
Yes, I have switched back to the limited distance module. This working distance should be 0.75mm. What else can I do besides changing the slide? Can I modify the optical module to reprint it?