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Message: <blockquote data-quote="Alexis Powell" data-source="post: 1339067" data-attributes="member: 5327">I followed a similar logic when I bought my first premium pocket roof (a Leica 10x25 Trinovid BC).  I think the argument had some merit back then and that the 10x25 made up for some of the optical deficiencies of these tiny binoculars.  However, the latest pocket roofs are so good, I'm not tempted to use my 10x25 (or a more recent 10x25 model).  Instead, I favor the 8x20 for their, in my case, overall equal or superior specs and optics (see below).  With respect to the Leica Trinovid pocket roofs--I find the eye-relief of the 8x20 on the short side for glasses use.  Also, the performance of the Trinovid against the light is not nearly as good as the Ultravid or Zeiss Victory, so they often reveal themselves as optically compromised tiny bins (the magic of the Ultravid and latest Victory is how well they manage under tricky lighting conditions).  A caution about 10x--the close focus is not nearly as good as the 8x models, thus limiting their utility for butterfly watching.  I find this very disappointing, both because I watch butterflies and because pocket roofs have so much potential to be superb for this use.  Among the 10x, the Ultravid has the best close focus, and the Trinovid has the worst (it is an irritatingly long, even for some birding, ~16 feet).         --AP</blockquote>