You have missed the point. DPReview provides well shot gallery photos to show off what cameras can do in stills.
The DPR galleries show what DPR
photographers can do. The cameras they review here don't take pictures by themselves.
Yet they provide lousy, sometimes intentionally to make a point, videos. Do you also question the need for all the galleries provided here? DPReview obviously thinks it is helpful to have have good examples for stills, but they do not do that for video. So I just suggested they provide good video examples.
It's much, much easier to take good photos than to
produce good videos. The difference in the verbs associated with making each kind of media speaks to the level of effort involved. Personally, I don't care about the galleries. They are cool to look at, but they have no bearing on my gear buying process. I'm way more interested in all the technical stuff as I can think of how that will affect my photography. You also have to keep in mind the galleries are often limited in their subject matter as well.... if you are a landscape shooter and the gallery is full of concert and portrait shots, they don't do you much specific good. And with the sample content, as you demonstrate, people get lost in the artistic/creative quality than how they reflect the camera's capabilities, which are 100% technical.
Plus keep in mind
DPR is completely free; seems odd and entitled to demand XYZ of them or chide them for not meeting expectations. They don't have to review cameras at all. They could shut down the site tomorrow and be well within their right. Not to say they shouldn't be open to feedback but within reason. What other
free gear review site can you point to that generates the kind of sample videos you deem acceptable? From what I've seen most camera review sites barely touch video at all.
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Sometimes I take pictures with my gear-
https://www.flickr.com/photos/41601371@N00/