dkCambridgeshire Posted July 16, 2009 Share #1 Posted July 16, 2009 Advertisement (gone after registration) This is a skeletal 'centre section' as distinct from the 'half section' in the first picture posted. Shell dealers get their money's worth by splitting / cutting the shells into three parts rather than two halves. I'm looking for a proper "two halves" Nautilus because they show more detail than the "three way splits" specimens but none are on offer these days . Years ago they were commonly available. I have a whole shell that requires cutting in two but do not have the means to tackle the cutting. Unfortunately the whole shell specimen is not sufficiently translucent to see the interior detail - it needs splitting. Illumination was by two tungsten spots at 45 degrees behind the specimen. Shell was clamped by its edge (out of frame) rather than resting it on a piece of glass thus avoiding transilluminated dust specks. Leica R4-S Model 2 and 100mm Macro Elmar. Scan of Cibachrome print from Fujichrome Tungsten slide. Cheers dunk Link to post Share on other sites More sharing options...
Advertisement Posted July 16, 2009 Posted July 16, 2009 Hi dkCambridgeshire, Take a look here Nautilus Shell Section No. 2. I'm sure you'll find what you were looking for!
stuny Posted July 16, 2009 Share #2 Posted July 16, 2009 Dunk - Even more fascinating and beautiful than the other. Link to post Share on other sites More sharing options...
pauledell Posted July 16, 2009 Share #3 Posted July 16, 2009 Dunk, I agree with Stuart. This is wonderful Paul Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 16, 2009 Author Share #4 Posted July 16, 2009 Thank you very much for the compliments. I love the 100 Macro Elmar lens ... it has been a very good tool and friend over the years. Cheers dunk Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 27, 2009 Author Share #5 Posted July 27, 2009 Here's some pictures of the lighting and subject set ups The De Vere copystand was not tall enough so had to use a Manfrotto 058 tripod. There are two tungsten spotlights hidden under the curtains below the subject each at 45 degrees to transilluminate the shells. The mini "magic arm" and clamps enable subject support without use of a glass table. The room was "blacked out" for the actual subject photographs. Thanks for looking dunk Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 28, 2009 Author Share #6 Posted July 28, 2009 EDIT 28 July: HEALTH AND SAFETY WARNING: If you are considering trying this transillumination technique using tungsten spotlights please be aware of the fire risk when using very hot continuous lighting in confined spaces eg in curtained enclosure as illustrated in this lighting set-up. Thanks for reading dunk Link to post Share on other sites More sharing options...
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