By contrast, most camcorders grab each frame at a single moment in time, with all of the pixels in the image acquired simultaneously. The consequence of this progressive capture is that any movement of the camera or subject between the beginning of a given frame's capture and the end of it will produce distortions in the shape of the image. We first noticed this effect when panning rapidly to follow fast motion: Trees and buildings would lean opposite the direction of our panning.
On the other hand, if you're panning slowly to take in a larger scene, you're not likely to notice the effect at all. More disconcerting, once we became sensitized to the phenomena, we noticed our video subjects "jiggling" slightly in response to even fairly minor camera shake as we were hand-holding the D Lens-based IS helps with this somewhat, but we'd be much happier if Nikon could figure out a way to grab the image data all at once and then read it off to the memory card before starting the next frame grab.
Video Examples: Dave shot some examples of video with the D90, so you can see what the different resolution levels look like. Click on any of the thumbnails below to bring up each video in a new window. As noted earlier, the Nikon D90's video imagery is not only considerably lower resolution than its still images, but the heavy JPEG compression applied to the video frames further reduces detail.
The upside of this is that the effective depth of field is quite a bit greater than you'd find in its still images at similar focal length and aperture. Note in some of the shots how little the apparent focus changes as wonder-dog Charlotte runs toward or away from the camera.
In the highest-res shot above, the lens was initially focused somewhere between Marti and the camera, so she's a little soft at the start of the clip. That said, I found it quite surprising how little apparent sharpness changed as Charlotte ran approached and receded from the camera.
Jello Effect Rolling Shutter Artifact Rapid camera motion can result in pretty severe distortion and apparent subject motion. As mentioned earlier, the Nikon D90's "rolling shutter" can introduce pretty severe distortion in response to either camera or subject movement.
The clip above is an extreme worst case: You'd probably never film with this kind of extreme camera motion, but it illustrates the nature of the problem pretty clearly. Notice how it's really not noticeable when panning slowly. Notice too, though, how even relatively minor hand movements at the end of the clip still create some distortion. I didn't have much time to devote to sharpening my focusing skills with the Nikon D90 in video mode. I tried it and it does produce a nice image. The extra step of opening up from F22 to F5.
Of course, the only way to tell is to shoot a series with exactly the same scene and set up and try both formulas then compare the results at the end of the editing workflow. As I got started with this, I realized I might as well shoot the series using every mode on the D All footage was shot with a Nikkor 50mm F1. Most shots were at F5. I made this decision after studying how to get the sharpest shots.
It turns out that wide open is not the best option for sharpness. Most professionals recommend stopping down 1 or 2 stops from wide open to get the best shot on most lenses. I tried that approach on this series and it takes a lot more light. I had a single light on the stuffed animals, about six feet away. A small office light was providing a bit of back light. This looked great at F1. Since the D90 could be about to record stills in Live View mode, the camera allows you to manually set the aperture, shutter, ISO and almost any other value as normal.
However only a handful of settings will have any impact if you start recording video instead. Metering is fixed to Matrix and the shutter and sensitivity adjusted automatically while filming, although you can lock them or apply compensation before starting. VR is supported while filming to reduce camera-shake, but at the cost of higher power consumption.
This is why having a lens with a smooth focusing ring and distance markings is very useful with the D Fail to work within its limitations though, or simply become unlucky, and you can end up with very disappointing output. DSLRs have large sensors compared to traditional camcorders, which allows them to perform better in low light, and also achieve a smaller depth of field.
In practice this bears-out with the D DSLRs also have the flexibility of interchangeable lenses, allowing you to film with exotic models including fisheyes and long telephotos, or those with macro or perspective control.
So I strongly suggest to look into that setting again. I state you can remove that test. PS: Please do not say that the bug xyz is fixed. It is fixed once the updated app is available for download. Reading your known issues, it reads as if the video recording issue is fixed and I was wondering why it does not work still. Better to say "fixed in version x. Post Thu Nov 01, pm Thanks for the input, wdaehn. I just tested all the cases with a D and D, and they all work as expected.
We don't have a D here, and there is a significant difference to the cameras we are working with here, so that's valuable feedback. The D is one of the newest cameras that unfortunately does not support the protocol we use through the pin port, which is why you need the USB cable for most functions , but because it is so new, it has all the other features like Live-view Selector and G4 setting.
We will try to reproduce the issue on a similar camera and find a solution for it, or at least correct the error messages! Post Sat Nov 03, pm Thanks. You might want to update the camera compatibility list to be more accurate then.
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