1 Requires a freshly charged new battery in the camera as possible. (To be located in, can bought later in the pharmacy) The tip of the Speckgrabbers is cleaned prior to use with an alcohol pad.
2 A lens that can be as far dimmed mount on the camera. The best location is a macro.
3 JPEG fine on the camera to adjust.
4 Lens Stopping down to eg f / 32, AF to manually adjust focus and manual on shortest distance.
5 A photo of a structureless as uniformly illuminated background Full Frame record - eg from a white sheet of paper.
6 Load photo into the computer - particularly convenient if you control the camera from your computer, then you have the photo directly on the monitor.
7 The image is projected onto the sensor upside down and reversed. With an image editing program I therefore reflects the image and turn it through 180 °. So I have on the monitor the same situation as on the camera's sensor and can find the soiled areas easier.
Remove 8 The lens and activate the camera's manual sensor cleaning: the mirror will lock up and the shutter gives a view of the sensor free.
9 Now with the now trockenenen (!) Speckgrabber cautious on the mirror "around temples". Large impurities can be seen with the naked eye perhaps, but much more helpful is the rotated / mirrored photo that you have on your monitor. With this you can localize the spots and preferably stamped with the Speckgrabber to the soiled areas.
Off 10 camera: the shutter to go, the mirror will go back down.
11 Clean the Speckgrabber gently with a Alkohl pad.
12 The lens mount again, making a second photo from the white sheet - see above - and analyze the image on the monitor. It should now look much cleaner. At choice again clean, as described in steps 7-10. For me, the camera is clean, when I no longer recognize troublesome spots at f / 11.
Comment: I do not think much of the bellows. It blows in the mirror chamber and do not know where the dust or lint land. Maybe they are blown by the sensor, but they probably stay in the camera. To hold the camera with the opening facing downwards and reinzupusten, I do not find practical - how fast can you accidentally touch something inside the bellows tip. Also: floating dust and lint, they "fall" not just out of the camera. Because I think it's better, everything is on the sensor, "wegzustempeln" with the Speckgrabber.
I once used a not quite dry Speckgrabber. The leaves traces. But I could reasonably temples in a new Reinigungscyclus with an absolutely dry Speckgrabber.
I think this is a relatively simple, safe, fast and in my case has always thorough cleaning method. Have Fun!