Sigma anunta ca lucreaza la 2 obiective pentru sistemul 4/3:
18 - 50 mm F3.5 - F5.6
si
55 - 200 mm F4.0 - F5.
http://www.dpreview.com/news/0403/04...sigma43rds.asp
Lentile cu fluid si cu focala variabila de la Philips:
http://www.dpreview.com/news/0403/04...sfluidlens.asp