While being the cheaper alternative, a major drawback though of changing lenses quite often is that it greatly increases the chances of dust entering your body. Dust appears as tiny specs or even smudges on your images and could ruin your sensor if not taken care of properly. Here are some tips on changing lenses.
- Always change lenses in an environment that is as dust-free as possible.
- Always have the body facing down to minimize dust from falling/getting in.
- Minimize the use of blowers unless really needed. Blowers don't easily get the dust out of the body, especially for dust that has already stuck to the sensor/mirrors and instead cause them to just fly around. An anti-static blower/medium is needed to really get the dust off.
- Don't leave the mount open without the body cap on for prolonged periods of time.
- Try to change lenses as quickly as possible.