+1 for the SMC Takumar 50 1.4 comments. This diminutive lens makes for a very nice short portrait lens on a crop body.
I'm surprised no-one has mentioned the Zeiss Flektogon 35 /2.4 or Zeiss Triotar 135/4 on this thread.
The Flek is amazing for Macro and has a nice creamy Bokeh. Colours are well saturated too. I think i just hit auto levels on Lightroom for this shot
as I wanted to limit any post work to show what the lens was capable of.
I picked the Triotar up because the few images I have seen from it online display a 3D like quality to them (plus it was cheap) and I was interested to see what it was like... I've yet to get round to using it much since re-lubing it though.
My favourite though is the Zeiss Pancolar 80 /1.8. - Wonderful colours and great contrast. Pin sharp corner to corner even on FF. Centre is sharp all the time and blurred backgrounds look like they are hand painted, rubbed down with fine sand paper and placed behind lightly frosted glass. It has been said to be the best Zeiss M42 lens since WWII and my personal copy lives up to that reputation. Which is possibly why they demand such a high premium
.
Examples like this
can be found in the CZJ Pancolar 1.8 80mm group on FlickR, which show off it's potential better than I can...





















). I'm thinking about buying a 1.4 version either in DS-M or ML form, but at the buy it now prices on ebay I'd almost feel stupid not paying an extra $100 and getting the Planar 1.4.
