One thing really annoying is not being able to magnify the EVF, when the LCD is open. But it has to be open, since Waveform won't be displayed in the EVF... So especially on bright sunny days, where you would need both a light blocking EVF and a waveform, your left with opening and closing the LCD back and forth.
So I´m really looking forward to the first reviews of the Zacuto C-loupe, my main concern would be ergonomics:
With a simple third party rubber eyepiece, the C100's EVF is perfect for tugging in your elbows and distributing the weight of the camera back on your body, while your head and the camera also can "bond" firmly.
The loupe creates distance to the body, the cameras center of gravity moves in front of your body and you have to slightly lift the C100, because of the lower position of the LCD and because the Zbands won't hold the LCD with loupe at an angle.
But hopefully I´m thinking wrong here and it still balances nicely.
I've had it for a week and it has drawbacks. Primarily it shifts the weight forward and makes the camera less stealthy and harder to handle. The Grip, which is comfortable to me without the zfinder, becomes a bit awkward. The further the camera is out in front, the less natural it feels to slip your hand under the strap and hold it. It bothers my wrist to be 100% honest. I have actually requested an RMA from Zacuto but I have been so busy with projects I haven't shipped it yet....and us such I am having second thoughts. What to do? What to do?