Negative ghost rider. Vortex and Leupold (generally speaking) coat their glass for the same spectrum of light. 570-590nm which is yellow red light. Meopta coats for 380-570nm (blue green spectrum).

quote:
I am partial to vortex so I would go with that, some extras you get with vortex that I am not sure about with the meopta include the 30 MM tube

30mm main tube doesn't do anything for light transmission especially in Vortex rifle scopes. They still use a 1" erector. You will get more range of adjustment but no better light performance. The lens coatings are the same and the hole that the shaft of light traveling through the scope is the same diameter no matter the tube size.

Now in most european scopes (depending on what the scope is made for) 30mm main body scopes will have a larger erector tube. Less internal travel but larger exit pupil equaling a perceived brighter image because more rods and cones are being exposed to light.

Don't confuse light transmission with low light performance. The two are not the same. You can thank the marketing department for scope manufacturers for the confusion.

What the companies aren't telling you is the spectrum of light being transmitted at the percentage they are advertising. This is an extremely important but overlooked piece of information.

quote:
A little about objectives and better low light visibility - Exit Pupil (diameter of available light at the optic nerve) is calculated by dividing the objective lens diameter by the power of magnification. So a 3-9x40mm scope has an exit pupil of 13.333 at 3x, 6.667 at 6x and 4.444 at 9x; while the 3-9x50 scope has an exit pupil of 16.667 at 3x, 8.333 at 6x and 5.556 at 9x. Even if you have great eyesight your eyes can not use all of the light provide by either scope at 3x. The reality is that this difference is so small that it's almost insignificant.

Exception / Big Exception......at 9x the 50mm scope has a 25% larger exit pupil than the 40mm scope. This is significant! since our eyes allow in an approximate circle of light. A 50mm scope provides 56% more available and useable (by our eyes) light than the 40mm scope at 9x! However, this is only useful if you hunt at 9x power. If you hunt at any magnification less your not getting the benefit of this 56% greater light. But if you hunt at dusk at 9x, then 56% additional light is a big benefit!

Generally speaking this is correct. However you really should take the erector tube diameter into consideration because it does make a difference. Shine a light through say a Vortex 30mm tube scope then shine one through a Meopta Meostar or a Swaro Z6 and you'll see the difference. While there is a threshold of usable exit pupil, having some excess is nice because it allows you to get loosey goosey behind of scope. If you think about it, exit pupil is really how we see through the scope. The larger the window the easier it is to "get behind" the scope.

quote:
Meopta meopro 4.5x14x50
Vortex viper pst 4x16x50 or 6x24x50
leupold vx-3 4.5x14x50

For whitetail hunting and pig hunting. Mule deer, elk, and pronghorn are on agenda as well. On a 7 rem mag. Clarity and low light visibility are my most important factors. What are yalls opinions? Thanks.

Given your parameters I would go with the MeoPro. UNLESS you want to dial for elevation. Then the Leupold with CDS would be the way to go.

All 3 companies make a good product. However they are built for different purposes.