@jbCinC_12
Got your PM but seems like when I reply it doesnt show up in my sent items, so not sure if you got my replies.
Anyway, yes the panny 20mm f1.7 is spectacular. Great for photos and video. Its the only lens I always take with me whenever I go out. Very fast and sharp.
Autofocus is great for photos. On video autofocus is slow.
Its just so small you can fit it in your pocket and nobody pays attention to you when you film since it looks like a toy.
It won't work with your Sankor 16f. In ex tele mode it might work.
Will see if it does later when I get home.
BTW. I recommend you get a Helios 44 (I have a Helios 44m, there are a few variants) for your Sankor 16f. They are cheap ($20-40), have great image quality, all metal, f2 aperture, and goes well with your Sankor 16f. Has an old film like feel to it especially at fast apertures.
Here's a video of me testing that combination out:
http://vimeo.com/39679993