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Wednesday, October 26, 2011

5 Simple Steps How to Avoid Sensor Dust

If you have been reading stuff about digital SLR, you probably have come across about digital SLR sensor dust. It is often considered as one great problem of digital camera. Others think that once they have it in their sensor, its the end of their camera. In other words sensor dust is truly a big issue in digital camera because it practically ruins your photos. The best way therefore to deal with sensor dust is not to let it in the camera in the first place. Here are 5 simple practical ways how to avoid sensor dust.

Refrain from changing lenses in the field.
Dust is indeed very difficult to control most especially in the field. The moment you open your camera to change lens you are exposing your sensor to the ambient air and dust. Dust in the air is a colloidal system, it is always suspended in the air. Wanna see how much is actually in the air? Turn on a flashlight in the dark...you'll see the Tyndall effect that the dust makes.

Point it Down
If changing lens out in the field is deemed necessary, point the front end of your camera toward the ground when switching lenses. Don't let gravity help because generally speaking, all things fall down not up, including the lightest particle of dust. So by pointing the sensor toward the ground, dust is less likely to settle in there.

Be fast and accurate.
Swapping of lens should be done quickly to avoid catching dust. This though requires practice. Before removing the lens from the camera, make sure the other lens is already ready---cap is removed and placed right next to the camera. The moment the camera is unlocked and lens is removed, replace the new lens at once is quick fluid motion. Take note, do this with the camera pointing down the ground.

For a lot of times I see photographers taking off the lens, then putting the cap and keep it in the camera bag, pull out the new lens, uncap it, and then mount it on the camera on their tripod. Well, the camera sensor in this case has already been exposed for about 60 seconds......quite long and it means quite a lot of dust has already been accumulated.

Use dust bag
In some areas, dust is just too dense to be nasty. In such areas, it is advised to use a dust bag.  The idea here is to insert your camera and the new lens into a bag where there is no dust, and swap out lenses inside the bag.  These dust bags are  usually translucent s0 you can see what you’re doing,  and you don’t have to worry about keeping the sensor face down.

Cap the camera

When there is no lens attached to the camera, always put the custom cap in place to protect the camera sensor. I usually keep the lens mounted all the time..but for some photographers who are not deft enough with swapping lenses, they dont mount lens on the camera ahead. In this case cap can be a good interim step.

If you are sending your camera for cleaning or repair, you also don't be sending it with lens mounted for it means extra weight and extra handling...so simply cap the camera instead.

This article is also found in latestcamera.us. Visit this site for more camera reviews.


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