RE: loop string draw lenght question part 2
No, I do not think this is a good solution.
You will not be able to gain a good repeatable reference to the string. You will lean your head forward to reach the string and get your nose on it. You will be to far from the peep. Along with other issues.
You will also loose about 20 fps of speed for no good reason.
I would but the correct module or cam and get it correct.
It is more problems than its worth.