This might be of interest for some :
https://alexhude.github.io/2019/01/24/hacking-leica-m240.html
Not too much, as whole thing started with fighting feminism.
If your wife do not allow you to buy something it is already well past equality point.
Can start of lecture about advantages of patriarchate or advantages of modern partners approach, depending on her views and preferences. Both ways, if done right, work.
I would be more interested into
"How to buy an expensive camera and not get killed by your wife"
Sorry I couldn't resist ;)
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