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Author Topic: Pushing The Limits Of A Sensor  (Read 6941 times)
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« Reply #15 on: August 18, 2009, 12:54 AM »

Hey John,

With regards to the image that turns up on the LCD; in preview mode it's not a bad idea to get used to using the 'histogram' option, not sure if you've 'met' it yet, but it give's you a graph with a spread of 'dark bits and light bits'. If you need to know 'roughly' how it's going, it only takes a glance at it to know how it's probably going to look. A handy 'checking' feature.

Looking forward to your next round of images Smiley


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« Reply #16 on: August 18, 2009, 10:58 AM »

According to the D5000 User Manual, the VR stays effective during panning. It can differentiate camera shake from tracking.

Yours may, somebody with a lesser model may still benifit from the suggestion. It's always worth a couple test shots under your conditions just to confirm you are not pushing or exceeding the VR limits.

The flash thing I have no idea on, but then I would not have believed that the shutter sound a camera generates could set off the stabilization system and blur a picture, until I saw the shots. Again a smarter camera may be programed to ignore its own induced noises.

Those tests are always good, me though I've got mine on [P] and haven't mucked around anymore then limiting the ISO to 200.


"Living is easy with eyes closed, misunderstanding all you see" John W Lennon

"People do not quit playing because they grow old, they grow old because they quit playing" George Bernard Shaw
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« Reply #17 on: September 10, 2009, 07:51 PM »

While I do not have any experience with Nikon VR (don't own any lenses with it in them, yet), I think the image is totally useable. It could use a run through noise ninja, but other than that it looks darn good for no flash at night.

I use a D300, and will often set auto ISO with an upper limit of 1600 ISO for shots like yours. I would normally use flash though, so I don't encounter the issues you had with one exception. The max synch speed for the D300 is 1/320 which might not totally freeze the kite if it were really moving.

Again not knowing the limits of the D5000, this technique may not apply, but with the D300 you can focus trap an object like a kite. If you know that it will fly through a certain spot in space, work this out with the person flying the kite before hand, then you can prefocus on that spot manually. Then set the camera to only fire when it is in focus, not on shutter release by you. Just hold down the shutter button, and when the kite is in focus, the camera will automatically take the image.

Also, do use the historgam alot. Get used to it, and how it relates to what you will see when you reveiw the image on your computer. I have backed down the LCD brigtness on my camera, as it is now closer to what I see when I review images in post. The suggestion for shooting RAW is a great one, anything which I think might benefit from tweaking in post I shoot in RAW.

Here are a couple of images (not of kites, sorry) but they should show what is possible with a fast moving aerial target.

Both of the above were shot at ISO 500, 1/2000sec f4 at 200mm on my 80-200f2.8 lens. Notice that they are sharp and that there is no prop blur at all. These machines were easily moving faster than a kite. I was shooting bursts of 20-30 images at 8 fps though so some were not in focus, but a good 80% were.

Also, check the D5000 manual for focus tracking. The D300 can focus and track a subject based on color. Just push the shutter halfway when the focus box in the viewfinder is on the kite and then keep it half focused. The camera will track the subject for you.

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