I've been trying to sell this lens on forums for a little while now. However, since the sigma 35 has come out, I've noticed the price on this lens has dropped alot. To the point where I'm not sure if I'm keen to sell it, or I might wait a little while longer to sell it. In the mean time, I'm wondering is it possible to get an adaptor that allows me to use this in m43 and be able to change the aperture? Note, this lens is meant for crop sensors only. I believe it can be used with FF but there will be vignetting.