DX » Community » Reviews » Portable USB 2.0 1.3MP 400X Digital Microscope with 8-LED Illumination
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  • User shoukd know how this microscope works

    posted by drrk24 on 11/28/2010
    5

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

    Pros:

    - 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

    Cons:

    - 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

    OtherThoughts:

    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 !

    Bottomline:

    For me it's worth the price !

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