I led a Dawn Chorus walk today on an old country estate and ancestral home beside where I live. (I don't live in an ancestral home nextdoor, I live in a suburban housing estate built on lands formerly belonging to it
).
I brought my SV's and my ED50, so that participants without binos could have a look at the birds we found. We had 27 species on a grey, dull slightly drizzly morning, including Little Grebes swimming to-and-fro across a lake. About ten people used my SV's to see the Grebes, panning left and right. All commented on the birds, most commented favourably on the view through the binos, and none noticed RB. I'm not suggesting it isn't there, it is, but I can only see it if I want to. I daresay I would never have noticed it had I not learned of it on BF.
This is entirely in contrast to a feature like CA. Long ago, as a kid using cheap binoculars, I could see CA. I didn't know it had a name, and I didn't know it varied in different models of binocular. Now I know what it is, and what causes it (thanks to BF contributors), I avoid binoculars that have too much of it.
).I brought my SV's and my ED50, so that participants without binos could have a look at the birds we found. We had 27 species on a grey, dull slightly drizzly morning, including Little Grebes swimming to-and-fro across a lake. About ten people used my SV's to see the Grebes, panning left and right. All commented on the birds, most commented favourably on the view through the binos, and none noticed RB. I'm not suggesting it isn't there, it is, but I can only see it if I want to. I daresay I would never have noticed it had I not learned of it on BF.
This is entirely in contrast to a feature like CA. Long ago, as a kid using cheap binoculars, I could see CA. I didn't know it had a name, and I didn't know it varied in different models of binocular. Now I know what it is, and what causes it (thanks to BF contributors), I avoid binoculars that have too much of it.
