IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

New photographic setup

Last Updated: 28th Mar 2010

By Pierre Houssin

Hi all,

After some one shot picture with my first setup, a modified Wild M3 (with objective in axial position)



I wanted better result. A modified Wild M8 didn't help me for that, although I had stunned visual picture.
After a lot of investigation (I wrote 2 articles about this subject in french AFM journal), I concluded that accumulation of lens degraded picture and abandon the aim of make very good picture through stereomicroscope.
Some month ago, I had the opportunity on a french flea market to buy a complete perfect Meopta Axomat 5 enlarger with one of the best existing enlargement objective : a like new Rodenstock Apo-Rodagon N 50mm 1:2,8.

I couldn't resist to build my own photomacroscope in order to make good stacked picture

I present you my new setup



1 Meopta Axomat 5 enlarger stative without light box and negative holder. Here the bellow is totally retracted
2 Wild stereo 40/14 phototube + Wild x10/21 photo eyepiece (because there is no residual correction in this eyepiece)
3 Zeiss rotative sample holder on Zeiss WL microscope focus block
4 same flexible LED light than used by Jean-Marc Johannet (thanks to his valuable advice), diffused by tracing paper
5 two industrial flexible arm to hold various reflector screen
6 Fuji E900 compact camera with cable release on homemade camera holder and realtime video with EasyCAP DC60 USB2 converter
7 Rodenstock Apo-Rodagon N 50mm 1:2,8 objective (in reversed position) on russian M39 tube or Zeiss Luminar 16mm objective on PVC RMS/M42 tube + some adapter ring

For white calibration, I made a custom white balance with the compact camera on a grey reference card : I don't need post software white balance.
It is very important to put tracing paper in the head of the flexible LED in order to transform the multi LED emitting head in only one source of diffuse light.
I reduce excess of light (that cause overexposed burned area on crystal faces) by put the light far away from the sample, and I increase time exposure.

This is the very first picture with this setup

compared with the precedent setup


Now it's time to work on artistic aspect !




Article has been viewed at least 17556 times.

Comments

Very nice article :)

I am thinking of starting micro-photography so I am reading a lot of articles about it.

Thank you for the article.

-Bri

Bri Dragonne
26th Nov 2009 4:04pm
Interesting setup!

Thanks for showing it.

I guess you will be able to make a lot of high-quality pictures.

Marko

Marko Burkhardt
26th Nov 2009 4:42pm

In order to leave comments to this article, you must be registered
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 16, 2018 00:23:26
View slideshow - Go to top of page