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<p>[QUOTE="Lecollectionneur, post: 449229, member: 8569"]Refractometer when translated is another measuring tool used for liquids by cars reparators, vine makers principally, this is a tool looking like a small Maglite, refringence is the capacity to measure the refraction of a translucent item, we use it from ivory to precious stones, I've found a translation more detailed in one of my books which can explain but it seems that is the word refractive in english used too.</p><p><br /></p><p><br /></p><p>@Kiko, the best lens for macro is a 50mm. And it's the less expensive too if you buy a manual one depending of your camera, shorter makes problems with lightning and longer is impossible ti use in good conditions in a closed area without a lot of equipment, making <a href="http://www.mesphotos.lecollectionneur.ch/fleurs_et_insectes/images_de_fleurs_2008/odonates_libellules_et_agri/fin-de-vie.html#previous-photo" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.mesphotos.lecollectionneur.ch/fleurs_et_insectes/images_de_fleurs_2008/odonates_libellules_et_agri/fin-de-vie.html#previous-photo" rel="nofollow">this picture</a> taken with a 200mm. Is impossible to make with a 50mm. But the hallmarks or small details are the reverse way too.</p><p>On most of my pictures used here, it's with a zoom as yours but chosen when I bought the camera what you can make only if you know well the seller…[/QUOTE]</p><p><br /></p>
[QUOTE="Lecollectionneur, post: 449229, member: 8569"]Refractometer when translated is another measuring tool used for liquids by cars reparators, vine makers principally, this is a tool looking like a small Maglite, refringence is the capacity to measure the refraction of a translucent item, we use it from ivory to precious stones, I've found a translation more detailed in one of my books which can explain but it seems that is the word refractive in english used too. @Kiko, the best lens for macro is a 50mm. And it's the less expensive too if you buy a manual one depending of your camera, shorter makes problems with lightning and longer is impossible ti use in good conditions in a closed area without a lot of equipment, making [URL='http://www.mesphotos.lecollectionneur.ch/fleurs_et_insectes/images_de_fleurs_2008/odonates_libellules_et_agri/fin-de-vie.html#previous-photo']this picture[/URL] taken with a 200mm. Is impossible to make with a 50mm. But the hallmarks or small details are the reverse way too. On most of my pictures used here, it's with a zoom as yours but chosen when I bought the camera what you can make only if you know well the seller…[/QUOTE]
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