Beautiful image quality: With a sensor many times bigger than ones found in a dedicated camcorder — and combined with sharp optics — you’ll capture the best possible image.
Lens versatility: Whether you go with the funky fisheye to creatively frame the subject or decide on a long telephoto lens to bring the action closer, suddenly, the idea of giving up the power zoom ubiquitous on camcorders is not that big of a deal.
Impressive depth of field control: Still camera lenses offer a clear advantage over the level of focus in the scene. You can render tack-sharp elements in the scene using a wide depth of field. Conversely, you can also create a narrow area of focus for an effect often seen in feature films.
Increased functionality: Remote triggering devices, rack systems, wireless transmitters, viewfinder adapters, and numerous other toys help carry out your moviemaking dreams.
Remarkable low-light capture: One advantage of the bigger sensor size is that it significantly reduces the noise usually associated with low-light capture. Fast lenses allow you render more detail in the image than the average camcorder. Then there’s ISO capability that allows you to control the sensitivity of the sensor.
Focus issue: DSLR’s are more difficult to focus than a camcorder. It’s hard to get precise focus with the camera’s live LCD screen. A camcorder lens allows you to zoom all the way in to focus, so the focus is exact. Camera lenses provide little leeway due to the short ratio between focal length.
Lack of sufficient controls: DSLR cameras can capture high-quality movies, but because the camera’s first function is to take still images, it has fewer controls for moviemaking. Many DSLR models offer little control over exposure while shooting.
Limited recording time: Some cameras limit capture to 12 minutes at a time in the full HD mode. This limit shouldn’t present a problem because you would rarely need to have such a long continuous take for a film you will edit.
Not ergonomic: Because it’s designed for shooting stills, the DSLR is not as comfortable to hold for making movies.
Not kind to audio: A DSLR does not offer great audio capture. The built-in microphone that was put there for voice notes are for still photos. Combine that with a lack of control over audio levels and XLR cable connectivity and the situation worsens. However, the camera does offer a mini-plug for adding an external microphone as well as a line mixer with XLR inputs.
Rolling shutter: Although it sounds like a retractable accessory for your bedroom window, rolling shutter is actually a common imaging defect that occurs when the camera moves too fast.
Single sensor: This is not really a con as much as a tradeoff. The bigger sensor is clearly superior under low-light conditions. Although color rendition is good, it’s not as good as that of dedicated camcorders.
Temperamental to temperature: DSLR cameras are notorious for overheating and can stop recording without warning.