[dontcatchmany]

I see some scopes have a front of the tube adjustment for the objective lense and some have a side knob to adjust the objective lens.

I have also read that the front adjustable objective will be clearer and brighter than the side knob adjustable(assuming the same glass) due to fewer lenses and such inside the tube.

If so, how much brighter and clearer.

I am thinking that with my diabetic eyesight, I might get a good scope with adjustable objective. Looking at all options at this point.

What would be advantages/disadvantages of either.

Thanks in advance.