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new mineral pictures

 
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soldevilla



Joined: 16 Dec 2010
Posts: 551
Location: Barcelona, more or less

PostPosted: Fri May 31, 2019 12:11 pm    Post subject: new mineral pictures Reply with quote

This weekend I was able to take some photos of minerals. I still try to define what is the reason that worsens my photos when I use x20 or more amplification.

I am really pleased with the results that I get with the x4 and with the x10 (despite being the x4 is an unmarked Chinese brand). But when I work with less than 2mm FOV the definition degrades a lot, and unfortunately many of the samples that I offer to photograph are very small.





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Geopressure



Joined: 26 Mar 2017
Posts: 65
Location: Nashville, TN

PostPosted: Fri May 31, 2019 6:29 pm    Post subject: Reply with quote

Hi Soldevilla,

Nice clear images and good color..You didn't identify the minerals so I will guess Calcite, Cinnabar, and Pyromorphite?
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soldevilla



Joined: 16 Dec 2010
Posts: 551
Location: Barcelona, more or less

PostPosted: Sat Jun 01, 2019 12:36 am    Post subject: Reply with quote

Fluorite, sphalerite and yes, piromorphite. All samples from Euskadi, Spain.
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Larry45



Joined: 16 Jan 2019
Posts: 9

PostPosted: Tue Jul 23, 2019 7:37 am    Post subject: degraded sharpness Reply with quote

Hi Soldevilla,

Your photography embodies my vision for my photomachrography. Wonderfull work.

I, too, have trouble with the 20x objective. Someone suggested that I switch from constant light to flash and I got a marked improvement. I set my flash at manual 1/16. The person said that this setup produces a very quick, 1/5000, light which freezes all movement.

Maybe, one day, I will be able to share my work with you.

Regards,
Larry
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soldevilla



Joined: 16 Dec 2010
Posts: 551
Location: Barcelona, more or less

PostPosted: Thu Jul 25, 2019 10:16 am    Post subject: Reply with quote

Thanks fot your comments.

I used continuous light, then a flash light, I modified some flashes to be able to use a light that can help to see the highlights and shadows and in the end I have used my old IKEA LEDs again. I start my StackShot and I leave the room ...
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nanometer



Joined: 30 Apr 2016
Posts: 287
Location: Tucson, AZ

PostPosted: Wed Jul 31, 2019 8:57 am    Post subject: Reply with quote

They are all excellent, but I especially like the third, and I'll bet they all would be very nice in stereo.
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