Well, I may have made a mistake. I checked over the reviews of the Gossen Digisix2 meter I had considered due to it's diminutive size and name and ordered one from B&H. Itt arrived today and has some of the worse instructions I've seen for one thing and after figuring it all out took it and two other meters, my F2A and Gossen Luna Pro SBC outside to do some testing. Almost without fail the Digisix2 would read one stop under the other two.
I see no way to calibrate it and it's not even mentioned in the instructions...a real bummer as I hate sending things back. What a PITA. It got good reviews from B&H from all I read hence the reason I bought it. It's just not making it. It reads out on the scale in EV and you transfer that number, say 11 to the top and it gives you all shutter/aperture combinations but as mentioned almost invariably it reads a stop under the other two. the Gossen shows EV as well and after measuring a simple white wall it showed EV 11 whereas the Digisix2 read EV 12. big difference in 125@f8 and 125 @f11.