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.
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:
Viewing it under my lowest magnification:
I now know from photographing the calibration slide that the photo is showing a 3.3mm view across with that objective lens.
I think scales make a big difference to macro and micro images. Well worth the extra work.
ReplyDeleteAdrian. It does help.
DeleteAgree wholeheartedly with Adrian. A scale puts things perspective.
ReplyDeleteWilma. Yes, it is difficult with photographs to judge size without some reference.
DeleteThat's fascinating. Nature is truly amazing.
ReplyDeleteMatron: It sure is, even more so when seen close up.
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