George-Andrew Makridis , Dec 16, 2011; 04:14 p.m.
Sigma apo 400mm, (5)
Meyer optik 300mm, (2)
Konica exanon 400mm, (4)
Olympus zuiko 300mm, (1)
Meyer telemegor 400mm, (6)
Nikon H 300mm pre-ai, (3)
and a tc, kenko 2x, nikon 2x, vivitar 3x,
for sharp, longest focal length, on a e-p1.
Numbers in bruckets are in order of best to worst, 1-6.
Got any experience?
Stephen Lewis 
, Dec 16, 2011; 06:50 p.m.
Best what, worst what? Are you talking resolution, center field or edge sharpness, contrast, accurate color rendition, shots taken at wide open or closed down apertures, distortion (various types). Sorry, but your question is so wide open that responses will probably be meaningless.
JDM von Weinberg 
, Dec 16, 2011; 07:49 p.m.
poob sɐ ʎןɹɐǝu sı 9˙7/ɟ ɯɯ002 ןɐɔoɟ ǝɥʇ ɥbnoɥʇןɐ ˙ǝןdɯɐxǝ ɹoɟ 'doʇsɹoop ʇsǝq ǝɥʇ ʎןɹɐǝןɔ sı 8/ɟ ɯɯ004 uoɹqɯɐɔ ɐ
˙sʎɐs uǝɥdǝʇs sɐ '¿ʇɐɥʍ ɹoɟ ʇsǝq
Don Cooper 
, Dec 16, 2011; 08:44 p.m.
JDM, DON'T DO DAT! I keep flipping my tablet but it keeps going upside down.
JDM von Weinberg , Dec 17, 2011; 12:42 a.m.
Sorry, it was my concurrence with Stephen's
responses will probably be meaningless
:P
Frank Skomial , Dec 17, 2011; 04:11 a.m.
Not knowing on what camera, what purpose, perhaps the only clue would be the price of the lens ?
Usually more expensive lenses are expected to work better in general, but there are many exceptions to this rule.
Dave Wilson , Dec 17, 2011; 09:49 a.m.
Which Olympus 300mm, the white ones were brutally good. If you're looking for manual focus, there's the 400mm Canon f5.6 with flourite glass, or one of the big Nikkors like mine 400mm f3.5 Ais ED-IF, all that other stuff is like a waste of money. And you need a big tripod. Not really sure what you're asking?
George-Andrew Makridis , Dec 17, 2011; 10:02 a.m.
All of them are between 100-200pounds. Used, on ebay, or elsewhere. So price should be right, at first. Then comes sharpness. I am thinking of birds. So center image sharpness is more vital. Nikon, or Canon, or white olympus, sure yea, but no can do right now.
Paul De Ley 
, Dec 17, 2011; 10:44 a.m.
Sitting birds or moving/flying birds? And if the latter, how do you keep the camera stable and aimed on target without a viewfinder (or is there a good video-style hood+viewfinder for the LCD that you can press against your brow?
I don't own the ep1 but my favorite manual focus lens for adapting to DSLR is the Canon FD 400 f4.5 not apo but really sharp and very handholdable. The one I got four years ago was $275, not sure what happened to used prices since then.
George-Andrew Makridis , Dec 17, 2011; 10:58 a.m.
Well Paul, sitting birds. I already got a combo=oly 2x tc+200mm zuiko f/5, all this 2x crop factor of the e-p1.
I do get 800mm but I would like it more sharp and twice as much regarding focal length. Otherwise why bother change my combo, which is not so bad?
