by ben_US » Thu Sep 01, 2016 3:29 pm
Hi Brian,
Which IQ1 are you using? If you've got a CMOS-based back (IQ150), you'll get a live view with good refresh speed and good dynamic-range handling capability. With CCD-based backs (IQ 140, 160, 180), you'll still get usable live view, though the framerate is much slower and scenes with high dynamic range will be less than stellar, but definitely still usable. This is due to the design of CCDs. Just a thought before you go headlong into a viewfinder-less system.
As far as camera hardware goes, one thing to consider is the sync cable from the lens to the back. When operating in normal shutter latency, all our backs require a wake-up signal (to indicate to the back to return to a capture-ready state) and then a capture signal (to, well, capture). With the back in zero latency, there is no wake-up signal required but the back is constantly ready to capture light- this introduces extra heat into the equation and will generate extra noise in the image. I highly recommend going with normal latency as this will give the cleanest image, though it does require that wake-up signal. There are cables out there which send both signals with one physical push (Kapture Group comes to mind, though I'm sure there's more). Otherwise, you can use a Phase One wake-up cable which has a small button to send the wake-up signal prior to firing the shutter. Or, in a pinch, just fire the shutter twice- the signal is the same.
Please make a support case for Technical Support with Capture One software:
http://support.phaseone.com and click on Contact Support, then select Technical Support.