Post by skybender on Nov 29, 2014 21:29:44 GMT -5
Here are a few special coated RED, with blue green glass objectives. These are for quick deceleration of heat, thus providing great rejection to that portion of the spectrum through the means of absorption in glass, and reflective interference on thinfilm.
The image this type of objective produces tend to be on the very neurtral color side. (pure whitelight)
300mm focal length
