Yes, it is actually VERY important to know these precautions before ever attempting to clean your sensor. These precautions will help you clean your sensor faster, safer and more economically.
If you haven’t read the PRECAUTIONS section above yet, PLEASE stop now and read them BEFORE attempting to clean your sensor. Inspect your sensor after each step. When it is clean, stop the process. Most of time you won't have to do all the steps. Using an inspection device will expedite this task. The dry method is almost always the preferred method, but the wet method may be required to remove stubborn particles. If lubricants from your camera find their way onto your sensor, the dry method will only make things worse.
Items needed to complete this task: Hand Blower, an Inspection Device or Computer and your Digital SLR Camera Body. Recommended Optional Items: SensorKlear® and/or D-SLR Brush
When it comes to using a magnifying inspection device, there actually is a trick to be able to see the smaller dust particles. If the dust particles are large, it will be easy for you to focus your eyes on them. If you don’t have any large particles to focus on, it may be hard to see the small ones. It’s kind of like when people walk into sliding glass doors. The reason they walked into that door was because the glass was clean and they were focusing past/through the glass and never saw it. The way many of us keep people from walking into our sliding glass doors is that we put decorations on the glass that allow us to focus on the glass and not through it. Those big chunks of dust on your sensor work just like the decorations we put on a sliding glass door and we can focus on them easily. When we don’t have those big focusing aids on the sensor, you may find it easier to focus your eyes on the edge of the sensor on the frame that is holding the filter in. After being able to focus on the edge, use focus lock with your eye and scan the surface of the sensor for dust.
We recommend using the dry method first. At the bare minimum, you must use a blower before using the wet method.
You should use very minimal pressure when cleaning cameras that have sensors with built-in image stabilization (like the Sony A7R II). Excessive pressure can damage the sensor; therefore these types of sensors are not covered by our “Damage Free Guarantee”.
Items needed to complete this task: Hand Blower, Multiple appropriately sized Alpha Premium Sensor Cleaning Swabs, Beta or Gamma Optical Cleaning Fluid, an Inspection Device or Computer and your Digital SLR Camera Body.
Never touch the bristles/fibers of the D-SLR Brush™ with your skin as this will contaminate the brush. This will make it ineffective and pass on the oils from your skin to the sensor.
Items needed to complete this task: Proper size or smaller D-SLR Brush™, Hand Blower, your Digital SLR Camera Body and an Inspection Device or a Computer.
The #1 culprit for contaminating brushes is stray lubricant from within your mirror cage. This is why we use the ChamberSwab®. The #2 culprit is the propellant from canned air and that is why we don’t recommend it.
Items needed to complete this task: ChamberSwab®, Gamma Optical Cleaning Fluid and your Digital SLR Camera Body.