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Photographing Winter
Snow can change the appearance of a landscape or area dramatically. It also opens the doors to many photogenic outdoor activities from building snowmen to skiing. Snow and ice also offers many opportunities for close up and abstract images. Fig 23.2 was taken inside a window that was completely
covered by a snow drift. Icicles had formed from the eave
above and despite its cavernous appearance, this photo was
taken from a very close up position.
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Safety and Comfort
It is vital to stay warm and dry, especially if you plan
long periods out of doors. Many layers of light clothing is
more effective than one or two heavy layers. Waterproof
outer layers are vital. Gloves, preferably waterproof, are
also essential even though they can often hamper the use of
photographic equipment. Numb fingers though will also prove
useless in handling a camera! The risk of camera shake
obviously increases as we are inclined to shiver.
When walking or hiking in wilderness or mountainous areas, stick to designated paths or roadways, DON'T wander into unmarked open areas. Snow can often build quite high, known as drifts. These can cover very uneven ground, even deep gorges, to look like level areas. One could fall through becoming injured or trapped to say the least. Get advice from local officials if you aren't familiar with the area. On sunny days it can become quite warm, despite a good layer of snow on the ground. It may sound odd but a facial sun block and sunglasses is also a consideration if you plan long periods outdoors. Ask any skier and they will tell you that getting sunburned is a real possibility. Glare is also a major factor as the sun reflects strongly off the snows white surface. |
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Equipment
Cold conditions are quite testing on camera equipment, especially modern battery dependent cameras that may freeze or shut down in extreme cold. The totally manual camera is king in these conditions though these types of cameras are becoming harder to get. Keep your cameras and lenses in well insulated camera bags and only take them out when taking photos, avoid hanging them over your neck or shoulder for long periods. Another alternative would be to keep them under your overcoat where your body heat will help keep them warm and dry. Remember that snow is wet so keep it off your gear. Lens fogging commonly occurs with sudden changes in temperature. This can lead to permanent damage of lenses. When coming in from the cold, introduce your camera equipment gradually. Leave them in the sealed camera bag for an hour or two so the temperature inside the sealed bag will come up gradually. If you've kept your camera under your garments or in your pocket, leave them in the coolest part of the house such as a shaded windowsill for an hour or two. Keep your equipment to a minimum and make sure you can carry everything comfortably without compromising your balance. In snow and ice it is much easier to slip and fall. A load of equipment and heavy camera bags will put you off balance, increasing the risk of falling and injuring yourself or damaging your gear. Backpacks, equipment vests and waist holsters are much more suitable ways of carrying your gear. Some sort of camera support is essential in cold conditions. Cold causes shivering which leads to camera shake, especially when you'll need to take off the gloves when taking photos. Despite appearances, light levels can be quite low, especially when it is snowing. A tripod can be cumbersome and may be hard to carry unless it can be attached to a backpack. A Monopod is more suitable and sturdy models can double as a walking stick! |
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Exposure TechniqueMost camera light metering systems can have difficulty exposing a scene with mainly snow correctly. Camera meters read the light that is reflected off the subject they are aimed at. In most situations where there are many shades and colours present in a scene, this poses no problems and a correct exposure is easily achieved by the camera. This is because a cameras meter may read off many different areas in a scene and is primed to average out areas of equal darkness and lightness. However when a scene is mainly made up of one color or shade, metering problems can occur. The colours or shades that pose the most problems are black and white. Metering off a mainly black or very dark coloured scene will fool many meters into assuming that there is very little light, despite the presence of strong lighting. Therefore the image will become overexposed, turning blacks to murky greys. Scenes with mainly white colouring or shade cause equal difficulties, this time though the meter assumes that there is more light present than there actually is, even when light levels are quite low. This leads to underexposure and what is meant to be white in shade also appears as a murky shade of grey in the final image. Snow of course is white and can reflect much more light than other colours, this could lead to the image underexposing. Instead of crisp white snow appearing in your image, you could be confronted with a murky grey appearance of snow and darker colours and areas in the image losing detail or being blacked out. Now before we go any further it must be remembered that there must be a certain amount of snow in a scene before an incorrect reading may come about. Just because there is a snow capped mountain in the background of your scene, doesn't mean it will lead to an incorrect exposure. |
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The fig 23.4 shows cars buried in the snow. The snow covers the majority of the scene and would have lead to underexposure if careful metering wasn't applied. fig 24.5 has many more shades and colours as well as snow. No compensation was applied to the exposure of this image because of the amount of contrast in shades and color. To counteract underexposure, the scene should be deliberately overexposed. For cameras with a manual exposure system, this isn't a problem. Simply take a meter reading and overexpose the correct exposure by one or two stops. Bracketing will ensure one good image. If there is an object of mid grey in the scene, take a close up reading of that object and adjust your exposure for that, recompose and take the photo. A spot meter that is either built into the camera or hand held is a tremendous help in these circumstances. Cameras with only automatic exposure systems such as film and digital compacts may be constrained by their lack of control but there are a few ways to 'fool' these cameras into exposing correctly. Most exposure and focusing systems in these cameras are activated by depressing the shutter halfway but not taking the photo. Point the camera at another area of equal distance but with much more variety in shade. Depress the shutter halfway and hold it, locking the exposure and focusing reading. Recompose on the original scene and press the button the rest of the way. Some cameras may have limited control of the metering system such as Exposure Compensation or film speed override. Both of these can be adjusted to under or over expose an image. On film cameras exposure compensation usually has adjustments from +2 to -2 stops in over and underexposure. Digital cameras compensations are usually indicated as EV's with a range usually from +2 to -2. Most modern film cameras now automatically adjust the film speed through DX coding. However some cameras may have a facility where the film speed indicated by the film can be overridden. Deliberately rating the film slower than its actual speed will overexpose the image. For example exposing a 100 ASA film at 50 ASA will overexpose it by one stop. Be careful though to readjust the film speed before taking any more photos. Though some Digital cameras have sensor sensitivity adjustments in film speed ratings, this does not lead to over or under exposing the image. |
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