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  • Overall Rating: 4
  • Price: 4
  • Quality: 3
  • Ease Of Use: 3
  • Usefulness: 4
User shoukd know how this microscope works – Portable USB 2.0 1.3MP 400X Digital Microscope with 8-LED Illumination Reviews

posted by drrk24 on 11/28/2010 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

- software is easy to install and simple to work with - no complex operation or functions - easyly set into operation (when understood how it works) - satisfying picture quality
- description is bad / not correct - support is not solid enough - no continuous magnification (~ 2 fix-focus points) - scale on the turn-wheel is in the wrong direction
How it works (simplified): the optical system is figured by 2 planes - sensor on one end / object on the other - and a lens in between. The picture of the object is by this reproduced on the sensor surface. The ratio of the 2 distances to the lens define the magnification. However, for a sharp picture the distance between both ends is not constant ! It varies with the ratio. By this you get two fix-focuses for the same total distance (w/ vice versa position of the lens). Between both, total distance must be shorter, which is inside the device. So you get a low and a high magnification !
For me it's worth the price !


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