Depends on the overall quality of the scope line.I have never owned a 50mm scope. How much difference is it ?
It will.I was looking at the vortex today. They had a 44 and a 50mm. It is just hard for me to get use to the big 50 sitting on my rifle. Now if it will give me another 15 minutes of shooting time that is another story.
Emphasis mine. That's exactly what scopes do. They gather and focus light on a specific point so that it may be viewed.All else being equal a 42mm scope at 6x will transmit the same light as a 50mm at 7x. No scope 'gathers' light as such. I would submit that other factors such as lens glass quality and lens coatings will have a bigger impact than lens size.
You 'get what you pay for' with diminishing returns I'm afraid. You can pay twice the price for a scope with only a 10% increase in quality. For some of us, it is worth it.