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Message: <blockquote data-quote="ceasar" data-source="post: 3148955" data-attributes="member: 26155">An 8x42 has a significantly larger exit pupil than an 8x30 and all things being equal it should be brighter than an 8x30 as twilight approaches.  The new coatings and dielectric prisms would also be a big help for any modern 8x42  roof prism during this time of day.When I got my Nikon 10x32 EDG I in the summer of 2010 I compared it with my Nikon 10x35 EII which I had purchased as a refurb in 2003.  I recall discussing it with Brock.   The exit pupils of these 2 binoculars are very close in size.   I tested them both in late twilight after the sun set below the horizon and in  earlier twilight conditions.  I could see more detail on song sparrows and doves in my neighbors back yards with the EDG as the light was getting dimmer but not 20 minutes worth.  I did this comparison over several evenings in late twilight at the time the sun was going below my western horizon.  In somewhat brighter conditions when comparing these 2 binoculars with similar exit pupils there was very little difference if any.Bob</blockquote>