I have Xha1 tell me what do i nee for this setup to work. I don't own ex1 nor do i do research about the lense diameter so if you do know please advice. "optimized Sony EX1 achromat" will that achromat work for XHa1?? Please let me know thank you.
Not sure. I'm sure all the info at letusdirect.com is the best source. I believe the ex1 achromat simply ensures edge to edge sharpness for a 77mm mount lens. A slightly smaller lens would certainly benefit from this as well. I have someone pretty interested coming tomorrow so let me know if you're interested.