How much did you need to rely on the focus mask for focusing? This is my biggest concern about a tech camera, which I am tempted to. I don't expect to put out the funds for an IQ series, so would need to rely on other focus methods. Were your shots at or near enough to infinity that, with a mid-range f-stop, you essentially wouldn't need to worry about focus without the focus mask to confirm? How does this work out for you and others out there using tech cameras?