Check this out. Got one of these for checking the sensor on my cameras. Compared to the one that sells for over $100, this is a bargain!...and it works!
Carson SM-44 5x SensorMag Magnifier SM-44 B&H Photo Video
Rakuten.com:Adorama Camera|Carson SensorMag LED Lighted Cleaning Loupe|Uncategorized
https://www.youtube.com/watch?v=nwme0soUJgg
Carson SM-44 5x SensorMag Magnifier SM-44 B&H Photo Video
Rakuten.com:Adorama Camera|Carson SensorMag LED Lighted Cleaning Loupe|Uncategorized
https://www.youtube.com/watch?v=nwme0soUJgg