What's your favorite non-native Lens?

Nikon manual focus 35mm f2, because I love the focal length on micro 4/3. It also is the right size and has a great focus ring. The optics are nothing short of exquisite.

 

That's a tough one...right now, it's the Konica 50/1.4 by a nose. It's close focus ability is making the difference.
Second place is my Helios 44M.



Konica 50/1.4 @2.8 (I think)

 

I'd have to say my 90mm f2 Leitz Summicron-M. It's a sharp lens that at f2 gives me high shutter speeds and nice bokeh.

 

The OM 55mm f1.2 gets my vote. Nice and sharp (stopped down a little) and wonderful out of focus qualities...

 

Currently the manual focus lenses that find their way to my E-PL1 most often are a Canon 50mm f1.2 rangefinder LTM lens and a Nikon 85mm f2 N-AI mount lens.

The Nikkor 85/2 is a relatively-unknown lens that is available reasonably and works well on m4/3 cameras because of its low weight and light-touch focus; though I love my Jupiter-9, the Nikkor 85/2 is sharper wide-open and lighter to carry.

 

Tough. The one that I have used the most since I bought it was my 105/4.0 Micro-Nikkor.

Followed by my 100/2.8 Pentax-M.

Which means I have to buy a 100/2.8 Pentax Macro or Nikon 105/2.8 Micro-Nikkor and replace both of them.  

 

Minolta 135/2.8

 

On my G1 a Sigma 105mm, f/2.8 EX DG Macro, on my GF1 a Voigtlander 15mm, f/4.5.

Barrie

 

I have used my 28mm 2.8 Leica R lens the most off all lenses!

It is already very sharp at f 2.8 and on a :43: camera it is a great focal length for street shooting!

Johan

 

No-brainer. The Micro-Nikkor 55mm f/3.5. Supersharp with close-ups, no distortion, no vignetting, no CA.

 

I just used my 50/2 Summicron R again this weekend and thought I probably wouldn't have needed these 50 lenses I got after this one... Easy to focus, good enough for me fully open, feels great, just a nice piece of quality - and it has an added sentimental value for me also which makes it even more fun to use.

Stefan