Originally posted by Vote4Pedro Hey, I see a bunch of old, cheap, manual 2x teleconverters on ebay, and I wonder if I can expect ANY of these brands to perform at all. When I say cheap, I mean like $5 to $15. It's not much of an investment, but I'd still don't want to waste my time, or the money. I'm not familiar with any of these brands, so I would have not idea which one to try out. Here they are:
Albinar
Toyo
Focal
Gemini
This is mainly just to play around, but it would be nice to find a keeper. Any advice is appreciated!
Take out the glass and they will work fine as extension tubes, but not for much else.