Originally posted by Philippp Reviews state that Ricoh's tethering software works well. Thanks! I will order the software from B&H through this website.
Note that as far as I know - I could be wrong with this - you can't use the software with mirror lockup. That may not be a problem for you. Though maybe you could set up the shot, drop out of tethered mode, shoot using a remote control and then re-enter tethered mode to set up the next shot.
Also, looking quickly through the manual, it doesn't seem that the exposure nor histogram is available from the tethering device. You'd need to read the exposure level on the camera (but no histogram there either).
So as an alternative, the Flucard connected via Wi-Fi to a mobile phone or tablet may also solve your problem. It has the same weaknesses as the Image Transmitter software in this use case, but costs less.