I know this is an expensive item, but I think I want one. I might settle for a
Sigma, if one exists. Any ideas where to look for this?
Do any of the secondary lenses (e.g. Spiratone, Kenko) come close to a Zuiko's
optical performance? I tried a cheap adapter, and it had severe chromatic
aberration and undesirable distortion.
I want to use this for night-time all-sky photography.
I know you can make a cheap all-sky camera with a convex mirror and a tripod,
but the image quality isn't liable to be super, and the tripod and camera get
into the image.
Matt BenDaniel
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