One of my objectives tonight was to show Angus and others how to clean the camera sensor. Some of Angus’ photos displayed a large dust bunny in the frame.
Whilst doing the cleaning I explained the process with those present.
The extent of dust spotting can be determined by setting the camera to F16 or above and focus to manual. Now take a photo of clear blue sky or a plain white surface. Zooming in all the way on the finished image on the LCD screen and methodically inspecting the whole surface will reveal the extent of spotting. Remember that dust spots at the top of the frame are actually at the bottom of the sensor.
Firstly, I explained that whilst most modern DSLRs have a special sensor vibration system built in which operates at either startup and/or shutdown, this doesn’t always remove persistent dust. Continue reading



