When the Panasonic GH4 was first announced, I heard numerous reports that there were filmmakers who'd be selling their 5D Mark III's and going with the GH4 exclusively. I was a bit stunned at all the positive buzz, just because I love my 5D Mark III and think the image quality is fantastic, even if the video codec is pretty terrible. Could anything possibly serve as a full replacement for the Mark III?
I recently purchased a Panasonic GH4, and while I'm kind of in love with this thing, I've already decided I won't be selling my Canon 5D Mark III anytime soon.
The Panasonic GH4 has some really awesome selling points. It is the only camera that can shoot at 4K for under $2,000, and it does a pretty great job of it, with insane amounts of detail. It has video features that DSLR video users have been longing for for quite sometime, including zebras and focus peaking. And it does it all in a really small, light package, that's extremely easy to handle.
That being said, as someone who's shot exclusively with Canon for the past 5 years, there were a lot of thing I missed about my Mark III when I picked up the GH4 and started trying to use it. Here are the top five things I miss about my Canon:
1) The bokeh - It's a scientific fact: it's harder to get shallow depth of field on a smaller Micro 4/3rds sensor than it is on a full frame sensor. The shorter focal lengths mean that your aperture needs to be wider to achieve the same creamy bokeh you're used to. That's not to say you can't still achieve great results with lenses like Voigtlander Noktons or the Nocticron. But it can still be a challenge. On that note...
2) The lenses - Canon now has a ridiculously large assortment of EF lenses to use from, a truly mature system that has pretty much every focal length and quality level one is looking for. Don't get me wrong, there are some awesome Micro 4/3rds lenses out there, but they're simply not as many to choose from (a difficulty which I ran into when I was first kitting out my Blackmagic Pocket). So you may not get the exact focal length you're looking for, or it may not have the preferred build quality. Of course, for Canon, you can probably get the exact thing you're looking for, but it'll cost an arm and a leg, and the lens itself could be really, really heavy.
3) The buttons - One thing that's annoying: On the Canon 5D Mark III, the aperture dial is in the back, and the shutter speed button is in the front. These crucial positions are switched on the GH4, and that is definitely going to take me some time to get used to. I also love that huge gigantic wheel on the Canon - nothing is really going to beat how easy that is to use, and the GH4's equivalent wheel, which feels pretty flimsy, certainly doesn't match up. UPDATE: Apparently, you CAN switch these buttons via the GH4 menus.
4) The viewfinder - I never thought I'd miss the viewfinder on my Canon, but it's really hard to get used to a digital viewfinder/EVF on the GH4. I was fine doing it on my Fuji X100, because that was more of a "leisure camera," but on the GH4, which I'm considering using for professional applications, I find the experience unsatisfying. There's just no substitute for being able to look through a viewfinder and see, through a prism/mirror, the exact thing that you're going to take a picture of. The software and screens on the GH4 are great, but software will take awhile to be perfect in this regard, and show us what we're looking at with perfect fidelity.
5) The top display panel - I realize this is a gripe that is specific to people switching from a Mark III, but I really have grown to love the panel at the top of the camera, which the GH4 doesn't have. It displays basic settings like aperture, shutter speed, ISO, and drive mode, and if I'm in a situation where I need to be discreet, it makes it really easy to change my settings without putting the camera up to my face. Not a big deal, but just something I missed when I was shooting my first video on the GH4.
UPDATE: One more thing that really grinds my gears - there is very little third-party RAW support for the GH4's .RW2 files, and it will likely be weeks/months until programs like Aperture and Lightroom release updates with GH4 RAW compatibility. I can't believe we are still living in an age when one of the world's most anticipated cameras can be released without an easy way to manipulate the files.
The Panasonic GH4 is essentially useless for professional photography jobs until RAW support arrives.
Those are just a few of my thoughts on making the switch, but overall I'm a huge fan of the GH4 and plan to use it far into the future. Just sometimes, a few things bother me about it. But for the amazing video features, incredible lightweight, and hyper-competitive price, the GH4 is still a formidable camera and one that I'm really enjoying using.