larryepage wrote:
My brother is the videographer in our family and has been for the past 30+ years. He always uses a dedicated video camera when shooting video (unless he is just caught without it) and says that he does so for three reasons:
The first is that the ergonomics of video cameras are much better suited to extended shooting with video cameras than with still cameras. Notwithstanding the current fad of shooting movies and other products with still cameras, he says that is simply silly. As an industrial engineer, I can see exactly why this is true for anything beyond short video clips. There ae some nice fixtures and accessories available to reduce this gap, but they tend to be fairly pricey.
Whether by using parfocal (or near parfocal) lenses or via optimized processor chips, dedicated video cameras also do a much better job of maintaining focus while zooming. Their wide-range zooms also perform better than wide range zooms on cameras requiring a larger image circle.
They generally do better than still cameras when shooting video in low light situations. We've not tested this with my newest cameras that are good in low light (D850, D500), because he has recently been shooting less video and more stills. (He uses Sony cameras. I don't know about Canon here.)
My brother is the videographer in our family and h... (
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As a professional news, feature and documentary video shooter for almost 40 years (and I am proud to say that I just won first place for best camerawork at this year's Mountainfilm Festival), I would take issue with all of the above assertions. In fact, unless you are moving to a high end prosumer or professional video camera, you will get much better video quality from any decent modern dslr or mirrorless camera than you will from something like the Canon mentioned by the OP. The only real advantage to a dedicated consumer video camera is the convenience, specifically because they usually come with a reasonably fast, wide focal range zoom lens, and the higher end ones are often better for manual audio management. Let's take it point by point.
Ergonomics: It is true that with a hand strap and some button placements, a dedicated videocam is slightly easier to operate, but I have never found them to be any better for extended use. It's important though, to compare apples with apples. The Canon mentioned, for example, has a 1" sensor. Something that small means that the lens can small and light as well as the body. The question of parfocality is really moot here, since modern zooms are all pretty parfocal. A good mft camera such as the Panasonic GH has a sensor substantially larger, with all the advantages that has, which we will go into later. The only downside is the fact that very large range zoom lenses are impractical, so you will probably have to carry two lenses to get the same range. In fact, if you are satisfied with a 1" chip, you could go with a camera like the Sony RX100 VII, with a very decent focal range and a bright lens, which you can slip in your pocket when not shooting, and has specs that far exceed the Canon dedicated videocam. Of course the ergos are not as good, but there are always tradeoffs. Step up to mft, and you will get some professional quality features, such as gamma and log settings, in case you want to grade your video afterwards for extended dynamic range. And if not, you can shoot standard ready-to-air video with many different picture style settings (the RX100 actually does all this as well, and I used it for a reportage in North Korea where it had to be inconspicuous).
New Sony mirrorless cameras allow customizing all settings and buttons differently for still and video shooting, so arguably the ergos for such a camera are better than for a dedicated videocamera, as you can set it up exactly as it fits your shooting style. It does take a bit of time to familiarize yourself with all the buttons, but after you have that it is absolutely effortless to call up what you need when you need it.
Only in the last couple of years has there been a videocamera at any price that shoots full frame. The advantages of this are manifold. The reason that many professional productions are using cameras such as the Sony A7s3 is that one can use a whole range of professional full frame lenses at wide apertures, allowing for an incredible cinematic look with very shallow depth of field for subject isolation. This is impossible on a consumer videocamera. And I have no idea why you believe that a videocamera with a tiny sensor could have better low light response. The exact opposite is true. Consumer videocams have horrible low light response, and cannot hold a candle to modern mirrorless or dslr hybrid cameras.
Of course once you get to APS-C and full frame, the camera and lens combo is going to get heavier, in which case you can take some weight off and increase stability with a shoulder rig or a brace. Decent ones can be had for one hundred dollars, hardly a major investment.
There will always be tradeoffs. You can't have quality, convenience and portability all in one package, they are to some extent mutually exclusive. But most of what your brother says is untrue in my experience and that of my professional colleagues. I'd be happy to discuss this in more detail.