Why would you spend £250 on a Zacuto Z finder when you have a EVF fit for purpose on the new Panasonic GH4 ? The only reason I can demonstrate this is that I have a Zacuto EVF that I needed for my Panasonic AF101 and Sony NEX-FS100 and comes in useful for various high tripod shots and JIB shots.
For £15 on EBAY you can buy yourself an eyecup that fits like a glove, in fact this was a Sony extra large eyecup I had in my drawer.
If you add an expensive loupe to the GH4 you loose the ability to perform tasks by touch screen which I find very useful. You need to get away from thinking Canon or Nikon with the Lumix GH4, this is a mirrorless camera with a fantastic crisp EVF with no problems focusing.
The need for a loupe senario has chased the DSLR for years with cameras that are photographic…first…who think they are also video cameras…second, coming from strong photographic pedigrees like Canon and Nikon.
The Panasonic GH4 has changed the rules…Everything about the GH4 is geared towards video including the EVF which is better than you get with a Canon C300, the YAGH with SDI, XLR and 4 pin power, VU metering and sound controls and thats just a handful of video features.
It makes my blood boil when people show you expensive items that are a waist of time and money…I repeat you do not need a 3rd party loupe on your GH4 so don’t waste your hard earned money buying one.
NOTE : If you already own a loupe like the Zacuto Z finder you have nothing to lose by trying it.