• 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. B

    Binocular for spotting owls

    Wildbill, Does the autofocus light on the camera disturb the owls? Or do you use manual focus? Maybe the A1 uses infra red? Is the shutter on silent? What is the shutter speed? The Minolta Z6 uses an infra red focus light or perhaps sound? I can't remember about the A7S. Even people in the...
  2. B

    Binocular for spotting owls

    I think I recall that owls can see magnitude 11 stars compared to mag 6.5 or 7 for us. An improvement of about 40 times. But I am not sure if this is correct. Regards, B.
  3. B

    Binocular for spotting owls

    Wildbill post #19. Excellent photo. Regards, B.
  4. B

    Binocular for spotting owls

    The Sony A7S goes to 408,000 ISO but this and 204,000 ISO give poor quality. My friend uses 80,000 ISO on the A7S for glow worm videos. I only take stills. I have taken good photos of three foxes playing under the oak tree with a Canon compact at 6,400 ISO. I should have taken a video, but I...
  5. B

    Binocular for spotting owls

    Owls sit in the oak tree at night about 25ft to 30ft from me. Not sure which type but about the size of a crow. An 85mm lens has a much wider field on full frame than a normal binocular. The screen shows things invisible with unaided eyes. An alternative is a 50mm f/0.95 lens or my 50mm or...
  6. B

    Binocular for spotting owls

    Sony A7S with 85mm f/1.4 lens 102,000 ISO. Look at the screen. You could also take a photo. Regards, B.
Back
Top