Zacuto's got one of the sweetest EVFs (electronic viewfinders) available on the market. You could buy the 3" HDMI EVF alone which will save you a few hundred dollars, but of course, what good is the EVF if you don't have the Z-Finder Loupe to match? Having to invest in a Z-Finder loupe will run the bill up several more hundreds of dollars. According to Cheesycam reader Ray, another popular ViewFinder works fine.
Many people who couldn't afford the real Z-Finder opted in for the Seagull. If you already own the Seagull ViewFinder, they fit perfectly onto Zacuto Frames. One benefit from this clever tip is that you could buy these Z-FRM frames for about $5.00 dollars to use as as spare frames with your Seagull, or if you need to add a frame to another camera. Another benefit of course is that it should mount directly to Zacuto's HDMI EVF either 'Snap' or 'Flip' versions, saving you a few hundred dollars. I'm pretty sure the more popular VF Prime DSLR LCD falls into this same category too. [Thanks Ray]
You can find these view finders under a few different names like 'VF Prime' or Seagull View Finder. Can be found on eBay here: (click here)
Or also Available on Amazon here:
VF Prime DSLR Camera LCD Viewfinder for 3" LCD