Sensor clean Sony A7S

Sony A7S is a mirrorless camera, so the "sensor" is directly visible when you take off the lens from the mount. I'm not sure of it's tendency to collect dust, however since I first bought it I have never ventured to clean the sensor. Lately I've noticed some blobs on the photos especially those taken at small apertures during the day. Nobody notices these blobs on night time photos.

I decided to clean it. It took two passes of wet swaps and dry swabs each to clean the spots from the "sensor". The before and the after shots are shown below, both shots are stacks of several shots (5) to enhance the spots. Again similar to the Canon 6D (which has sensor cleaning and the sensor actually sits behind the mirror) I believe the spots on the Sony A7S sensor is caused more by evaporated condensation droplets from previous cold night outings.

Before : Spots on stacks of  last night's skyshots taken on 135/2.8 @f/2.8

After : No spots on stacks of bright room taken on 35/2.0 @f/11

After : No spots on stacks of bright room taken on 135/2.8 @f/2.8

After : No spots on stacks of bright room taken on 135/2.8 @f/11

I guess that sorted out the "sensor" cleaning agenda on the two full frame cameras. I haven't seen any  major dust/spots issue on the Canon 7D and 7DMk2 perhaps because both are mostly on daytime duties and have not experience evaporated condensation issues due to drastic warm/cold/warm changes. Rest assured though , if they do exhibit these problems later on, it will be dealt with delay using the Green Clean Wet and Dry Sensor Cleaner.