I'm curious if anyone has used an Eyepiece "Doubler" (or Booster as some are x2.5) with a bin as as a temporary spotter?
For example, the Bushnell Elite Binoculars 2.5x Eyepiece Doubler
http://www.eagleoptics.com/index.asp?pid=4485
How is the AFOV?
The view (not great I suspect or am I too pessemistic)?
The shake?
The usability?
The trade off of weight against ease of use?
Any input welcome!
With tripod, at 20x?
I've used the Vortex doubler on a 8x42 Razor. It was fine, IMO. The eyecup is adjustable, so eye relief and focus were easy to attain and comfortable in use. Naturally the FOV and AFOV was lower, and it was dimmer, but those things tend to happen when you double the magnification, plus when you're just popping the doubler on for a closer look at something in particular, you really don't notice. I don't recall thinking that it reduced the quality of the view at all, either. Only used it with the binoculars mounted on a monopod.
Sent it back when I returned my Razors, but kind of wish I'd kept it.
I wonder how it would work on a scope with a fixed EP? If it fits...