Cameras can be affected by different effects including Heat which is a major enemy in the North. Avoid high temperatures like the inside of a car on a summer's day where a car can reach almost boiling temperature.
High heat melts lubricants in equipment causing them to run into lenses, delicate housings, etc. Excessive heat can cause parts of a cameras to wrap.
Excessive cold is unlikely to cause damage in the North where we live but camera batteries can generally be affected by cold weather (such as visiting Antartica)
Keep the camera warm or under a coat until your ready to use it.
Moisture can condense on a camera if metal that has been cold meets warm humid air (such as from airconditioning to outdoors)
Keep camera inside the bag until it reaches the ambient temperature of the environment in which you are shooting.
Humidity
Humidity causes significant problems. This is particularly prevalent in a tropical environment.
Prints and negatives contain a layer of gelatin which can be affected by humidity.
Once a Fungus is on a lense it's there and can never be removed entirely.
To keep fungus away, us a desiccant such as SILICA GEL to absorb moisture.
Us camera gear regularly as fungus does not grow in sunlight. The UV content kills spores before they can spread. Be wary of older equipment and always inspect.
Dust and Dirt
Take measures to always protect equipment from dust and dirt. Keep the camera equipment in a bag, and keep a UV filter to protect during use. Use lens and end caps for lenses not permantely mounted to the camera.
Carrying Gear
Always use a camera bag -> An investment as they are usually insulated against heat and the padding will absorb knocks. You can buy bags that are watertight (expensive) but they are worthwhile if taking gear on water, or travelling when there is a good change of heavy lasting rain.
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