Marine Polyp

Marine Polyp

Now that we can make images at 8x, let's look at a marine polyp.  You may remember previous images of it but not like this.

Marine Polyps

This bivalve shell probably lay on the bottom after its inhabitant died.  Its surface became inhabited by what could be coral polyps.  These little animals secrete calcium carbonate and form a little home.

Marine Polyps

They lived on the inside as well as the outside of the shell.

Marine Polyp

I am excited to see the inside of their home.

Marine Polyp

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Another Look at Copper Inclusions

Copper Ore Inclusion in Quartz

Some of you may remember this tiny "rock."  I think, now, that it is a copper ore inclusion.  It seems, to me, like a pretty good look at 8x.

Just FYI, this is what I have shown before.

I really like the closer up view.  How about you?

Copper Ore Inclusions in Quartz

Copper Ore Inclusion in Quartz

 

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Flint, Quartz, Sedimentary Finale

Quartz Crystals

This is a stack of 297 captures.  It comes from the geode part of the Flint, Quartz, Sedimentary at which we have been looking.

This kind of photography consumes lots of storage space.  I, unknowingly, filled my "C" drive and it almost stopped working.  It finally got my attention.  I corrected the problem and not it is working well.  I have noticed that it is almost time to buy more drives.  It is a good thing that hard drive prices are coming down.

The scale on this is ~8x.  I used the Sigma 180mm macro with a Sigma 24-70 reversed as a closeup filter for this capture.

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Quartz Crystals Up Close

Quartz Crystals in Flint, Quartz, Sedimentary

We are moving into the geode part of the rock for a closer look at the quartz crystals.  I think the coloration comes from the flint to which they are attached.  It is difficult for me to throw light into the cavity.

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More Close Ups

Quartz Crystals

I tried using f/5.6 while capturing this series.  As you can see it distorts the image such that it looks like a ball.

Flint, Quartz, Sedimentary

Even with this lens setup, Sigma f/2.8, 24-70 on 24 and ∞, mounted in reverse on the Sigma 180mm macro, I am forced to use f/3.5 for shooting to avoid the vignetting.  It gives expected perspective with this setting.  I am using CamRanger step medium successfully.

A word about the Sigma 180mm macro.  Some of you might remember that I sent it back for repairs.  It turns out that it needed no repairs and they sent it back.  The only charge I incurred was the shipping and insurance one way.  I think, now, that the problem was that I did not have the resistance on the focusing rail set stiffly enough and it allowed movement as I checked the camera after each 50 image capture.  I am currently experiencing no difficulties except those noted under the first image.

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