Please excuse me if this topic has been discussed. I did a search and couldn't find it.

A friend was recommending a riflescope, and he has 3 deer scopes that are 3x9x50. I'm in the market for a new scope but had planned on buying one with a 40mm objective lens. He said he loves the ability to get another 10 minutes of light out of the day. I would love the bonus light and was set to buy a 50mm.

I was doing some research on and found this recommended reading by the dealer on how to choose a scope. Below is the part that mentioned the negative aspects to a bigger objective lens. I really don't know what to do or who to trust. I would greatly appreciate some suggestions. Thanks in advance.

How to choose a scope link

Here's the important quote from the article...

"Letís talk about objective lens sizes. 40 to 44mm is pretty standard on a medium variable rifle scope. Itís trendy these days to have large objective lenses of 50, 56, or even 75mm in some cases. In most cases, these are unwarranted, and the largest ones are laughable. Large objective lenses will only transmit more useable light than smaller ones if they are set at their highest power in the dimmest conditions. The detriment is comfort and ease of eye alignment. With a properly mounted scope, you should be able to close your eyes, shoulder your gun with a proper, repeatable stock weld (a stock weld is the firm but comfortable and repeatable position of your face on the gun stock), open your eyes, and look directly through the center of your scope every time. Large objective lenses prevent this from happening because of the ring height required to keep such a large lens off your gun barrel. Some scopes require such high mounting that only your chin touches the stock. These scopes are also heavier, clumsier, unwieldy, unbalanced to carry, slower and less comfortable to shoot. Some of these scopes weigh up to an unbelievable 3.5 pounds!"
It is not the killing ...; it is the contest of skill and cunning. The true hunter counts his achievement in proportion to the effort involved and the fairness of the sport.

Dr. Saxton Pope