• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Search results

thxpress_search_the_forum Search Opus
  1. G

    Dusk light performance relative to weight, NL Pure 10x32 vs 10x42

    Measuring your eye pupil diameter under the light levels of interest may provide guidance on how much light will get into your eyes from larger exit pupils.
Back
Top