<p>@kent, you asked about the Helios 85 mm. I've used one and while it's an interesting lens, it's really a specialist lens (or a lens oddity, if you prefer) - it only works in stop-down mode (and of course manual focus). It does have an interesting look, but I wouldn't even put it in the running for comparison to the Nikon.<br>
It is, however, cheaper - now ~$200 or so, or a little more than half the (local) price (for now, as mentioned above) of the Nikon f1.8G. This shows the effect of the ruble - I think the ruble price has stayed the same as when I looked at it a couple of years ago, when the US$ equivalent price was close to $400. If you can get it at current ruble price, it might be worth playing with, at ~$400 it was frankly ridiculous - or only for the hard-core collectors and experimenters.</p>