Re: 1" or 30mm performance difference
The difference in size is the area of the objective (2*pi*r*r)
1" diameter = 1013sq mm
30mm dia = 1423 sq mm
Nearly a 50% increase in lens area.
Whether that makes a difference depends on a lot of factors (magnification, hunting situation, shooters age ...)
If some is good and more is better, then too much is just right.
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