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Message: <blockquote data-quote="billb9430" data-source="post: 3584671" data-attributes="member: 98032">Hello Henning,You are correct that the Nydar sight would not be usable in the darkness of an enclosed hide or blind. It also might have problems in a heavily canopied forest, though in normal forest there is enough light that the reticle is easily visible against the dark understory where small birds seem to like to hide! With regard to sight mounting, I suspect there are two solutions. One is to mount whatever type of sight rigidly to the scope so that it retains it alignment. The other is the mount the sight so that it is quick and easy to align for the scope being used when the tripod is set up. This does take a bit more time, but allows one sight to be used conveniently with different scopes. I've tried many different ball heads for this use. Cheap ones ($3) are indeed difficult to align and do not hold position well. On the other hand, a full size ball head adds needless weight. The one I like best is the little Giotto MH1004 pictured in my earlier post. It sells for about $15 in the USA, is rated to hold 2 kg (MUCH more than the Nydar!), and is simple and precise to use. Despite the photo, my Nikon ED50 is usually used with an eyepiece having nearly a 5˚ true field, so no sight is needed. The Pentax, however, is often used for watching grizzly bears and other mountain wildlife best observed at a much longer distance. It is for this that the Nyder excels in my use. Since the red dot and Nydar reflex sights both focus the reticle at infinity, there's a neat little trick to help others find the bird (or distant bear!) you are viewing in your scope with THEIR binoculars. Just have them align one side of the binocular to look through the reflex sight window and the viewer will then see the bird target with the in-focus magnified reticle superimposed on it. Try this with your reflex sight.   - Bill</blockquote>

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