u/Cosmezim

So, I just tested the 500mm f6.3 for E-mount, and I must say I was shocked. I get, low budget lenses come with a trade off, however, if the trade off is not focusing, anything, well, sign me up for a refund.
For the past 3h I’ve been testing the lens, different subjects, apertures, distances, etc, here’s the verdict:
At 6.3 no matter the distance the lens refuses to focus in anything, everything is blurred, the “bokeh” is stylish and immersive but irrelevant since the subject is not in focus. The only way I can get better (not near decent) results is at f32, however, infinite focus doesn’t focus anything, I tested with building around 3-5 miles away and I had to pull back like a mm of the infinite, this leads me to believe, when I will try to get the moon or sun the results will be disappointing.
So, this is just my tests, that I made upon receiving the lens (today), and I can maybe be doing something wrong. Videos I see online the phones and videos look good and decent, claimed to be shot at f6.3. Now, am I missing something? Could be that this lens is faulty or damaged?
I used a Sony a7IV and a ZV-E1 and the results are exactly the same. Any advice? I have a 11mm from TTartisans and the sharpness and focusing aren’t that great but they are as you expect. But the 500mm is just not focusing at all.

So mid update, the internet connection went down and my macbook got stucked in loading screen 4 ever. So I when to and iStore to see what could I do and they force shut, force reboot, force backups, force reset to factory settings, force everything.
Now, this happens and when, for some reason, passes this state, it starts to get really hot and puff… shut down.
Is this fixable?

So, I know this might not be the easiest shot to remove the clamp but with a time limit and lack of resources this is what I’ve got. Any “easy” way to remove the clamp? What if it was just, let’s say “a stick” I know probably would be easier but what should be my workflow?