Swaro 65mm vs 85mm spotter

[bigjacs22]

I have read the specifications for the 65 vs 85mm objective lens on the Swaro ATX/STX and see virtually no difference in light transmission. Is this true? Is only a couple of feet field of view the difference?

 

[BBob]

I believe what that spec is actually saying is the amount of light that enters the system is transmitted at that spec. More light comes through the larger objective therefore you have more light overall through the scope than the smaller objective.