It is an extremely good lens
I have the 3.5 - I could post you an image of a flower or something, but the following is a jpeg taken as close as you can get with the lens, (without extension tubes), at f11 and ISO 1600,hand held at 1/500 sec
(a point to maybe think about is that it is a Nikkor SLR lens, designed for a full 35mm film, (let's say a FF sensor in digital terms), - on the Nikon DSLRs you can "tell the camera" what manual lens it is - I think that it is recommended that for the best results you tell your D300, (cropped sensor), that this lens is an 85mm - (maybe 55mm x 1.5, (1.6)- but it's only a guess on my part!) - anyway, - maybe this allows the cameras smart software to make some adjustments - with M43 cams there is no such information passed to the camera)
I do not think, however that this really matters, with M43 stuff as the M43 sensor, (even smaller than the sensor on the D300) only uses part of the lens and all the results that I have seen - good and bad images - have been good - if you see what I mean - IMHO, it is certainly worth spending up to £100 to get a good (condition) copy
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