Wednesday, July 16, 2008

Steadying your Point-and-Shoot

The D60 came in and it is looking quite pretty. Functionality is good, and the results have been … satisfactory. More on that when I run out of other things.

Last time, I talked about how to trick a point-and-shoot camera into focusing on the right element in view. This time I’m going to give you a few pointers on how to get the best clarity from that shot.

When a picture is not well focused, there are a few reasons why this might be the case. It could be that the camera itself was focused on the wrong thing; ie: that leaf in the foreground as opposed to your real subject further on. It could also be that the subject was in motion, smearing the image across a clear background. It may even be that the image was too dark, and the camera kept the shutter open too long in an attempt to get enough light. Finally, YOU might have moved.

We’ve already covered a few ways you can trick a camera out of doing the first hiccup. The second is not something that is easily controlled. If we are talking about a car going by, then the solution is to somehow move your camera with the vehicle so that it is the background that blurs but the car stays crisp. But if you’re taking pictures of a group of children and they are not, as children never seem to, holding completely still, then you will get smear-blur. There’s no single element for you to move your camera with in order to clarify it, and you’d never be able to keep up with the randomness anyway.

The second, third, and fourth hiccup are actually the same problem. The shutter is open for a set length of time, letting the sensor ‘see’ the image, and then the shutter closes again when enough light has passed through. Sometimes there is plenty of light, but the shutter is simply too slow to completely avoid smear-blur. From the time it opens to the time it closes, your subject has moved, even when the shutter is moving as fast as it can. In dark settings, the automatic camera will keep the shutter open longer in order to keep you from having a flat, black image, maybe with a spot of light from a street lamp or something. You are more likely to get a blur during dark times than any other, because the camera is attempting to adjust for this no matter what is moving. When the camera itself moves during the time where the shutter is open, EVERYTHING will smear. Unless you are moving the camera WITH your subject, I mean. But that technique is difficult and it takes a lot of practice to freeze a moving element by moving your camera exactly as it does.

There is not much you can do about your point-and-shoot camera’s shutter speed. You could slow it down, for artsy trick shots (or things in the dark that you know will suddenly get bright, like fireworks). The best you can do is select the automated settings designed for specific situations, like the fireworks setting, sports (for the fastest shutter speed), and various portrait or landscape options.

Since you can’t do very much with the shutter, and you can’t control the movement of your subject, the last thing you can do is reduce the amount of moving that your camera does.

The obvious solution is a tripod. Tripods can be expensive and, really, a point-and-shoot camera looks silly on a 4+ foot set of legs. Many of them have the attachment placement, or a bracket to put the tripod’s grips, but it still looks ridiculous. Smaller tripods are available, around the six inch height, but these are almost always designed specifically for the self-portrait types of shots. If you had a brace that was convenient to set the camera on, you wouldn’t need a tripod.

Which brings us to the next solution: a brace. A park bench, a tree, a wall, a lamp post. Anything that will not move can become a steadying support. Place the side or bottom of the camera directly against the object and then frame your picture. Don’t make the mistake of setting a corner of the camera against the object, or taking up an awkward and uncomfortable pose when using it, or you’ll be back to the same problem. You’ll be wobbling and tottering, even just a little, while thinking you were braced. What you want to do is reduce the amount that your muscles are supporting the camera – muscles are designed as a compensation mechanism. If you were to stand up straight, completely still, you could feel your muscles at the front and back of your ankles working to keep you steady, alternating pulls to compensate for slight motion and winds gravity and whatever else is trying to get you into a prone position. Your bones do not have this problem, so if there is nothing else available for a brace, use your own skeleton. That is to say, if worst comes to worst, sit on your butt and set the camera on your bent knee. Your foot and your butt are working as two legs of a tripod, and your musculature isn’t involved in any way (except to keep your skeleton together, I guess). Instant tripod – sort of. Bi-pod? There IS such a thing as a monopod…

Let’s create a monopod for those people uninterested in sitting on cold, wet grass. Or gravel. Or in the middle of a forest, or at a sporting event. There are plenty of reasons you may not want to put your skeleton to use. Rather than go out and purchase a 4 foot monopod, we’ll instead make use of that screw-hole for another item. A screw. Attach a long thread, maybe of yarn or some other string that will not stretch, to the neck of a screw that will fit into that aperture. Make sure the string is long enough to tie, and then have enough length left over to have about half a foot on the ground. Then screw it into the tripod receptacle and let the string hang from your camera to the ground. Now step on the dangling end of the string. Remember how we mentioned your musculature was a compensation mechanism? Well we are going to force it to compensate for a force that will not move, hopefully keeping your muscles as still as possible. Pull upwards on the camera until there is no slack in the string (keep your foot solid), and now compose your picture with a steady camera, held aloft by your arms which are fighting a consistent pressure of a string pulling down. Instant poor-man’s portable monopod!

As always, do your best to make sure there is plenty of light so the camera is not having to compensate with a slower shutter speed. Don’t rely entirely on the flash, as even at it’s best, flash imagery can look garish. There is no better way to add 5 pounds to a person, while still making them look like a cadaver, than to have a straight-on flash be your only light source.

But at least that picture won’t have any motion blur.

No comments: