Have a question for those in BF land with technical expertise. Porro binoculars are usually lauded for the 3-D effect due to the space between the objectives lens as opposed to roof prisms. When I use my reverse porros (which are by design smaller) than standard porros, I detect no difference in the so called 3-D effect. But then my old tired eyes (and brain) may not be able to see any difference. Do reverse porros negate the 3-D effect?
John
[QUOTE=John Dracon;1980824] Do reverse porros negate the 3-D effect?
John[/QUOTE]
Yes they do, but for very close viewing they are suitable because the dead angle between the barrels is not that wide.
You may also be interested in some of my findings and theories around 3D-vision in binoculars:
http://www.birdforum.net/showthread.php?t=173492&page=2
Regards
//L
What's interesting is that while standard porros clearly have an enhanced 3D effect, reverse porros don't seem "flatter" than roofs. In my experience it seems about the same, though I don't have particularly wide-set eyes to begin with. Perhaps those with wide-set eyes might notice more of a difference with reverse porros.
Even odder--to me at least--is that some roofs seem more 3D than others, even in the same configuration. I regularly switch between a Pentax 8x32 ED and a Zeiss 8x32 FL and every time it seems the Zeiss gives a slightly flatter view. It may only be depth of field at work, but it sure doesn't seem like it. Things look a little fuller and rounder in the Pentax.
Now why is that?