There is an interesting article in the current issue of 'Photoworld' the UK magazine for Sony Alpha/Minolta SLR user club.
The writer describes a DIY re chipping of an old Sigma AF tele 400mm F5.6 Minolta mount lens using a purpose designed chip from James Lao in China.
It cost $60 including postage and four days to deliver. The only tools used were a pair of precision side cutters and a small Philips screwdriver. The lens was shown in use with an A900.
Some very nice long APO fairly lightweight and inexpensive lenses can be adapted this way!
The same issue also carries an article with some stunning ground to air shots using an A100 with Minolta 100-300 APO zoom lens mostly at max. zoom of 300mm. (Equivalent of 480mm used with an APS sensor)