Some recomendations from the experts about getting a "ultra wide angle" view with the EX3 (best adapter or lens for the money, etc.) would be greatly appreciated... we'll be shooting some scenes during the next few days, mostly exteriors, so any help will be great !!
If you don't have $3,800 - you can get a true converter 0.8x from Sony for $450. SONY VCL-EX0877
At 0.8x it's not SUPER wide (also not Super expensive) - and seems to have good optics. Should have less artifact and definitely maintains focus better than simple adapters -- and price is similar to 3rd party simple adapters.
I'm very happy with mine.