Tuesday, 31 March 2015

Measuring with the Microscope + Video Camera

I kept looking at the calibration slides for microscopes and finally decided to invest in one.

DSCN4130b

It has dots of various sizes and, most useful for me, in the centre is a circle which contains a cross 1 mm across with a scale marked every 1/10 mm and every 1/100 mm.

Snapshot Cal 150327_0003b   Snapshot Cal 150327_0000b

By taking snapshots of that with each objective lens I could work out the actual size of each shot.

Taking a piece of moss from a hanging basket:

DSCN4119   DSCN4120

Viewing it under my lowest magnification:

2015-03-27-12.46.08 ZS PMax

I now know from photographing the calibration slide that the photo is showing a 3.3mm view across with that objective lens.
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6 comments:

  1. ADRIAN31 March 2015 at 16:24

    I think scales make a big difference to macro and micro images. Well worth the extra work.

    ReplyDelete
  2. Wilma31 March 2015 at 17:02

    Agree wholeheartedly with Adrian. A scale puts things perspective.

    ReplyDelete
    Replies
    1. Midmarsh John3 April 2015 at 08:36

      Wilma. Yes, it is difficult with photographs to judge size without some reference.

      Delete
  3. Matron1 April 2015 at 14:23

    That's fascinating. Nature is truly amazing.

    ReplyDelete
    Replies
    1. Midmarsh John3 April 2015 at 08:36

      Matron: It sure is, even more so when seen close up.

      Delete

Thank you for visiting. Hope you enjoyed the pictures. Any comment, or correction to any information or identification I get wrong, is most welcome. John

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