Troubleshooting Twoneil adapter

[scd]

Really excited because I just got the Twoneil+ in the mail, but I'm having a problem with image darkness, I think because of the lens I'm using. I went through the installation instructions and I browsed forums but I haven't come across this particular problem.

I'm using a newer Nikon lens, 28-80mm, 1:3.3 - 5.6 G. When I attach it to my Canon HF S200+twoneil the image becomes significantly darker, basically totally black unless pointed directly at a light, and I can't seem to get the brightness up through adjusting the exposure manually. I've rotated the adapter so the screen is aligned. Am I using a lens that isn't really compatible? Thinking I should be using a smaller really wide angle lens. I'm really not technically adept, so sorry if this is something straightforward.



My second question is, I have a bunch of old Pentax lenses from my spotmatic that I really like and I was hoping to figure out a way to adapt them to the Twoneil, but talking to camera store people it sounds impossible. Anyone have any ideas on that?

[Janke]

No wonder your picture is dark. With your slow lens you really need a lot of light, try it outside a sunny day...

You really need a fast lens for any DOF adapter, say in the f 1:1.8 to 1.4 range.

[redfalcon]

What Janke said

[scd]

thanks for the help. will check out pawn shops for a lens in that range today.