Image view yes, but I didn't think actual liveview for focusing possible in pk_tether? I havn't used it in ages, I maybe wrong, if someone could clarify? Yes an external HDMI screen is very nice, I have a DP7. It will let you get your cam in some very unusual angles, and you can have the screen at any height with a cable. Mind you there's a slight delay, and you'll still be reaching down to actually focus and adjust the cam
. Do bear in mind btw you don't absolutely have to use HDMI, there's also a composite out. So if you really want to go old school, ebay for an used sony watchman later model with composite in.