A more elegant setup exists.
- Use a Zacuto Kameleon EVF (the Zacuto Gratical EVF in the photo does not support HDMI input; the Kameleon does)
- Use a battery adapter to power it.
- Use a Giottos MH 1004 mini-ballhead to support the EVF (video is cued).
As an alternative to the (modern) Kameleon EVF, use the (old) EVF Pro (refer to mini-ballhead video generally).
I don't own an IQ4 150 so cannot comment on the specifics. If I understand correctly your post, the photographer must navigate what is displayed on an EVF via the IQ buttons/touch screen? Not ideal, but perhaps not insurmountable if one was sufficiently familiar with the IQ to operate it with their eye to the EVF eyecup?
Just a thought.
That's what I did. I got the Kameleon of course. The picture is an old picture from Photokina to show what many years ago was paraded around (pre Kameleon days) in the context of the Platon project (camera rig for Hassy 100 mpx H ystem).
The Kameleon is great, but it is still large and bulky if you attach it to a comparatively smaller tech camera frame or, forbid, a TC.
Battery to carry around is a pain in the a**, but of course convenient in the sense you'll never run out of power with a larger power bank.
The deal breaker are the ergonomics and the slow IQ4 navigation. It is useless. You need a lot higher refresh rate, an ability to control where you zoom in not from the back but somewhere more convenient (believe me it is annoying to use the EVF to check critical focus). Most importantly the firmware on the HDMI side is badly implemented or let's say not intentionally implemented as an EVF, but rather say a live view 100% feed for macro photogs or fashion photographers with a client in the back looking at the feed – one should ideally have automatic manual focus detection to 100% zoom to check sharpness like on Leica SL camera as a focusing aid for adapted M lenses; here you don't have anything.
It didn't work for me and I don't easily give up. The Zacuto idea was in the end a big waste of money. A lot better to tether in the field with an M1 AIR in a shaded hardshell case. Checking incoming C1 images is also a lot better than a crappy HDMI feed from the camera. It is super easy to just loot at the tethering screen while shooting. Leaves the HMDI option primarily as a macro live feed for a monitor on the side of say a P3 rig where you can finely compose and set sharpness. For anything else I think it is not really good on the IQ4 platform.
I got only 50% of the initial investment back as I needed to sell not only the viewfinder, but all the expensive little arms and mounting accessories which you don't get anything for almost when selling it off as a second-hand item. These viewfinders are also not selling like pancakes ... so if you try this, be aware you could lose quite a bit of money while trying.
Some budding film making kid bought it then from me for an excellent price.
