I found a Zenitar 2.8/16 russian fisheye with Nikon mount and the shopkeeper was kind enoug to lend it to me for the weekend. I shoot a test roll and the results were great, inspite the stop down metering.
I have read some articles about this lens, owners are satisfied. The shopkeeper is asking 250 euros, which I found a bit pricy, considering that there was quite a bit of dust on the internal optics.
Would you consider this lens for 200? That's what I offered.