Originally Posted by Elill
be easier if they just sold us the curved frame
Yeah and then comes the challenge of finding the right curve for you. OZTS did look into having their frames profiled, however didn't when told that the machines that bend the alloy need 600mm extra at each end, plus, no guarantee that the machines would not crush the extrusion during the bending process. They can sand fill the profile, however still no guarantee of perfection. Then flocking the curved frame is an issue.
So back to the "right curve", you need to be able to adjust the amount of curve and why I have threads top and bottom. If I need more, I just wind the nuts tighter. If I need less, I can back them off.
So whilst TR plays a big part, the actual lens used also contributes as well. So is short, my MK4 seems to exhibit less pincushion than the Mk3 and I am still using the same TR.