Wednesday, November 30, 2005

Stop Blurry Images


It's one of the biggest problems that can occur with cameras - Blurry Images. Angela, a tips subscriber, emailed me last week asking if her camera was working OK. She had taken a lot of shots of her daughter's 21st birthday, and they were all blurry.

Have you taken shots like this before? Blurry images are usually a by-product of taking a shot using your camera's auto mode, but without using the flash when there is low light (such as when you are indoors or at night).

An even bigger problem for Angela was that she did not know about the blurry images until she uploaded the images to her computer a few days later. She had been using the LCD screen but didn't realise that because it's so small, it won't show if any images are blurry.



Why does the image turn out blurry?
Well, technical reason is that the camera moved while the shutter was open. In low light the shutter needs to be open for longer so the camera gets enough light to properly expose the shot. That's why holding your camera in your hand works OK in daylight - because they're more light and the shutter is open for less time.

How do I fix it?
While it's impossible to fix an already blurry image, there are a number of ways to ensure future images are ultra sharp - each with it's benefits and disadvantages.
1. Turn on the flash! Modern cameras warn you if they think a flash should be used - usually by flashing a hand symbol (which basically says you'll get a blurry image if you take the shot while holding the camera in your hand). A flash will provide enough light for the camera to use a quick shutter speed and stop the blurriness. The disadvantage of using a flash is the flash light 'dies away' quickly, so only the subjects close to the camera are fully lit. The background will be very dark.

2. Use a tripod. This will steady the camera while the shutter is open. When shooting people, you also need to ask them to be still while the shutter is open. You also need to be aware that your finger depressing the shutter button will shake the camera, so you should use either the timer, or a remote trigger, so the camera is still when the shot is taken. This method works well when you want to take shots of inanimate objects, but not so well when taking shots of people, such as in this photo.

3. Use "Shutter Priority Mode". Some of the more expensive cameras have a shutter priority mode that you can use to override the camera's default shutter settings. Using this mode, increase the shutter speed as far as you can go. The camera will compensate by opening the aperture more (to let in more light) and also increasing the ISO value (so the camera needs less overall light to get an acceptable image). If you use this method, your images may turn out to be too dark, so either take a few shots at different shutter speeds, or increase the EV level to brighten the image. This method also tends to increase the 'noise' in the image.

I also recommend practicing. Practice taking some more indoors shots using each of the tips above. Make a note of which settings you used for which shots, and then check the images on your computer. Note which ones turned out best and use those settings next time you need to take shots in that situation.

Learning how your camera works beforehand can go a long way to ensure photos of your special occasions don't end up in the digital dustbin.

Thursday, November 03, 2005

Nice Shot of Baby - Maybe
by Kenneth Hoffman


When a new addition to the family arrives, the cameras pop out like weeds

in the garden. Unfortunately, most of the pictures, while enjoyed, never quite capture the cuteness of the new baby. Here are some tips to help you do the little darling justice.

First, let me advise you never to use a wide angle lens for a baby picture. The foreshortening of a 28mm focal length lens will be sure to (1) make the baby's nose appear larger, (2) reduce the size of their ears to looking smaller and out of shape, and (3) probably cause an overexposure of the image due to the closeness of the flash to the subject. One the other hand, a short telephoto lens (100mm) will reproduce our angel's features to a normal proportion, all of his (or her) different parts presented in the proper ratio. Even a small distortion of proportion has a definite (and detrimental) effect on the features.


While I'm not excluding taking pictures at night with a flash, I am recommending that you wait for daytime for that wonderful light coming from your window. Turn off the flash or cover it with two layers of white handkerchief. A setting of 200 ISO should be sufficient for a good exposure. The bottom pane is the one with the most photogenic light, so if you can, close off the upper part. Try raising the mattress in the crib so that you can see the baby without looking down. Soft light from the sky or light reflected off clouds produces a three dimensional rounded effect especially flattering to a baby's face. If the room is furnished in dark colors, place a reflecting surface near the baby to fill in the shadow. Use a tripod or other support and shoot away.

Try different angles: a high angle looking down, a position on the opposite side of the crib (turn it around), or even through the bars. Avoid using the macro setting on a zoom lens, since this setting most often incorporates a wide angle focal length. Find the closest distance possible on your short telephoto lens (85mm - 120mm) and stand at that distance. A two diopter close-up attachment lens could halve this distance for super close-ups.

For twins, try to have one sit and one stand. The diagonals produced in the composition introduce a dynamic note to the picture. Important is to have all eyes pointing in the same direction. A squeeze toy helps.


Don't forget the comic possibilities of baby photography. A cold piece of lettuce often produces a variety of quizzical expressions. A slice of lemon brings a riot of surprised and sour looks. A messy finale to a noon time meal is best enjoyed at a distance. Tickling feathers, air blown through a straw or a spray of water from a hidden source can supply an endless source of comical expressions. Before long, you'll have them captured forever in pictures and in your hearts!

Want to know how to take photos in specific situations such as at weddings, at the beach, of lightning, or flowers? Then take a look at my 267 Simple Tips for Sensational Photos book. It's full to the brim with handy tips and techniques for lots of common situations.




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