View single post by Robert
 Posted: Sun Nov 26th, 2017 02:47
Robert



Joined: Mon Apr 2nd, 2012
Location: South Lakeland, UK
Posts: 4066
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A friend has a piece of Hematite, quite a spectacular piece, about 100mm (4 inches) in diameter, very heavy, black with dark grey and faint dark red/brown markings/streaks. It's roughly spherical but with a rosetted fracture mark where it may have separated from another piece of Hematite. I believe it's of the type known as 'kidney ore' and they were sometimes found in clusters. Hematite is known to be brittle and has an almost glass like feel.

The local area was famed for the finest Hematite deposits in the world in the mid to late 19th century, some mining continued until the mid 20th century. It was the foundation for the prosperity of Furness area, railway rails and pig iron for further processing, were the main products, the rails were exported around the world.

This is the only piece of Hematite ore I have seen in the flesh and to handle. It's quite spectacular and I believe an outstanding example. I want to photograph it but am unsure how to capture the piece to do it justice. I feel that it really needs recording so that others can see this lovely example and examine it closely if they wish.

Given my recent attempts at 360/180º landscapes, my thoughts turn towards 360º imaging, in this case inwards, rather than outwards. I would need fine detail, a depth of good focus of about 2 to 3 inches and presumably a longish focal length (~105mm?) to avoid the distortion which a wider angle lens would produce.

From what I can gather, about 24 images around a subject are good but perhaps it also needs a 'zenith' and 'nadir' image too? It can be placed on a turntable or a bearing to rotate it.

I have searched 360º product photography but what I am finding seems entirely commercially orientated, with very expensive software or licences to host the images on specialised servers.

I have been pondering this for a year or more but I need to actually do something, the owner is elderly and in poor health. I currently have permission to photograph it, that could change, so any suggestions are welcome.



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Robert.