TaffyTheGog

I love how gear snobs will chime in completely missing the point of 'any experience with LESS EXPENSIVE focal reducers' just to say they like Metabones, regardless whether they've only ever used Metabones and therefore CANNOT answer the question, at all, even remotely.

I am personally curious about the Adplo and like focal reducers. Anyone? And please do not use the word Metabones in your reply - I can barely afford my camera, let alone a horribly overpriced accessory.

two test pics of a Meyer Optyc Görliz Orestor 50mm 1.8 at 1.8 with the lens turbo I am really impressed by the rendering of the not in focus part of the image ( what this days is called bokeh, ...ah the bokeh!      I always make fun of the word because it was completely unknown to me for years and years and not everybody uses it!).
 
 
I have added a last image made with an adapter without optics for comparison purposes.
 

Yes, you are a well know “ tester” on the internet and very good tests they are too.
 
I remember your comments on the kipon adapter. You said, back then, that you were going to show us some of the results of you using them, but that you were very busy. I have bought it and gained  some experience myself with it.
 
http://www.fuji-x-forum.com/topic/866-kipon-tilt-adapter-would-you-please-show-some-of-your-images/
 
Your test shows that on a aps-c you are likely to see an improved image quality by using a metabone sped booster as opposed to a simple non optical adapter.  Unfortunately you haven’t made a comparative test with different focal reducers.
  I am not interested in adapters with electrical contacts since the lenses that I would be using would be mainly M42 without electrical contacts.

because, for all you know,  it might be as good as and cost less than half? How do you know it isn’t?
 
If it were that simple of anything you should always buy, without comparison, the most expensive thing and assume that because they ask more money that has to me that it is automatically better.
 
It might very well be so, but not because it has to be so based on price.
 
My purpose in starting this thread was to assess the quality of each on merit, not basing this on a price which might or might not reflect a better image quality.