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