I bought this lens and have seen other reviews. Without actual images magnified I could only really guess at what the results of a lesser expensive probe lens would produce.
In this video I discuss
Assembly @1:06
Quality of build @5:03
Some things to consider throughout
Three test shots at same settings @12:19
Onscreen magnified results. @17:16
I am looking at this lens from toy photography standpoint.
In studio, controlled environment and minimized vibrations.
Of course I ramble in between as usual.
I hope this video helps and for those interested in the macro rail I use. It can be found on Amazon
The brand is
Sunwayfoto
MFR 150S