Long Range Target Interdiction - Short Range Attention Span

[Desert Fox]

I readed somewhere that there is an ideal magnification(more light being focused) for night shooting?? Am I wrong??

[Desert Fox]

Desert Fox - What you are talking about is matching the exit pupil of the scope with your pupil size. Divide the Objective lens in mm by the power fo hte scope and you have the exit pupil. As an example 50mm divided by 8x equals 6.25mm, this would be slightly smaller then your pupil at night so you would have a hard time locating the true center axis of your lens. Go too large and you are wasting light on other than your pupil.

So the larger the Objective lens the better it is for night??

[The Reaper]

So the larger the Objective lens the better it is for night??

Negative.

1. There is an overkill if the ratio exceeds the 7mm measurement or so.

2. Magnification is also a factor, larger objectives may not be able to compensate for extreme mag, there is a practical limit.

TR

[Desert Fox]

Negative.

1. There is an overkill if the ratio exceeds the 7mm measurement or so.

2. Magnification is also a factor, larger objectives may not be able to compensate for extreme mag, there is a practical limit.

TR

Ok!
The larger the obj lens, the higher will be the optimal zoom??
i.e. :
100mm/7mm = 14x optimal
50mm/7mm = 7x optimal

[Peregrino]

Ok!
The larger the obj lens, the higher will be the optimal zoom??
i.e. :
100mm/7mm = 14x optimal
50mm/7mm = 7x optimal

Must be strong - Must learn to resist temptation! BMT - This one's an approved target for a closed sheaf. DF - Either you're not asking good questions, or your purpose is too obscure for us to give you the right answers. Re-read the previous posts from LR1947, TR, and myself. Anything more or less than (approximately) a 7mm exit pupil doesn't take advantage of the light focusing capability of the optics - it either isn't enough or it wastes light. Have you ever seen a pair of ship's binoculars with the large objective lenses to gather maximum light and the magnification to create the right sized exit pupil? The latest versions have to be mounted on a pedestal and have special stabilization built in just to be useable. You don't want to know the price tag. Once you get above 7x stabilization and eye fatigue start becoming major problems. That's why nobody makes handheld optics above 10x. You can use some of the smaller astronomical scopes if you want maximum objective size but you'll need low power (relatively) eyepieces and it's not a portable solution.

[The Reaper]

Ok!
The larger the obj lens, the higher will be the optimal zoom??
i.e. :
100mm/7mm = 14x optimal
50mm/7mm = 7x optimal

www.google.com

I am tired of trying to explain it to you.

TR

[NousDefionsDoc]

Desert Fox, you will learn a lot more if you just read. You are interrupting.