Denizens of the (not very) deep!
Moderators: rjlittlefield, ChrisR, Chris S., Pau
- Charles Krebs
- Posts: 5865
- Joined: Tue Aug 01, 2006 8:02 pm
- Location: Issaquah, WA USA
- Contact:
Denizens of the (not very) deep!
Here are a few shots from the salt water sample I took this week from a fishing pier in Seattle.
4/0.16 S Plan Apo, brightfield. Not a very large "stack", but it drove me crazy moving the little "plumes". I gave up and was later surprised that there was one batch that looked OK.
60/1.40 S Plan Apo, DIC. This dinoflagellate was really far too "deep" into the slide for the 60X. I could barely focus without hitting the cover slip. As a result the resolution isn't very good, but it was an interesting angle on a "dino" I had not seen before.
10/0.40 S Plan Apo, darkfield. No idea what this is... (but it looks neat!)
20/0.46 S Plan Achromat, darkfield. I can't do darkfield with the 20/0.70 without changing condensers, so I occasionally put a 0.46 Plan Achromat on the nosepiece for times when the 10X just isn't enough.
10/0.40 S Plan Apo, darkfield. Cropped from the center of a horizontal frame.
This was an old 25X Zeiss Neofluar (0.60 I think). When used with the darkfield stop I've placed in my condenser it provides a lighting that is right on the "edge" of darkfield and "circular oblique".
It doesn't always look that good, but with certain subjects it seems to work nicely. This was a very deep slide and these diatoms were right up against the cover slip. The other debris had settled to the bottom and made what I felt was an interesting background
4/0.16 S Plan Apo, brightfield. Not a very large "stack", but it drove me crazy moving the little "plumes". I gave up and was later surprised that there was one batch that looked OK.
60/1.40 S Plan Apo, DIC. This dinoflagellate was really far too "deep" into the slide for the 60X. I could barely focus without hitting the cover slip. As a result the resolution isn't very good, but it was an interesting angle on a "dino" I had not seen before.
10/0.40 S Plan Apo, darkfield. No idea what this is... (but it looks neat!)
20/0.46 S Plan Achromat, darkfield. I can't do darkfield with the 20/0.70 without changing condensers, so I occasionally put a 0.46 Plan Achromat on the nosepiece for times when the 10X just isn't enough.
10/0.40 S Plan Apo, darkfield. Cropped from the center of a horizontal frame.
This was an old 25X Zeiss Neofluar (0.60 I think). When used with the darkfield stop I've placed in my condenser it provides a lighting that is right on the "edge" of darkfield and "circular oblique".
It doesn't always look that good, but with certain subjects it seems to work nicely. This was a very deep slide and these diatoms were right up against the cover slip. The other debris had settled to the bottom and made what I felt was an interesting background
Charles.......these are just amazing:
I don't do this kind of photography but I really appreciate the technical and artistic effort that goes in to producing such work:
I can appreciate these on more that one level...........the one thought striking me at present is that ........what fantastic design ideas for a set of very classy jewellery you have here..........show them to a gold/silversmith as soon as you can:
To see these tiny creatures brings home just how devastating oil-spills and pollution can be:
Thank you for posting:
P.S. I will leave all the technicalities and the Latin names to the relevant experts::D
sonyalpha
I don't do this kind of photography but I really appreciate the technical and artistic effort that goes in to producing such work:
I can appreciate these on more that one level...........the one thought striking me at present is that ........what fantastic design ideas for a set of very classy jewellery you have here..........show them to a gold/silversmith as soon as you can:
To see these tiny creatures brings home just how devastating oil-spills and pollution can be:
Thank you for posting:
P.S. I will leave all the technicalities and the Latin names to the relevant experts::D
sonyalpha
Retired but not old in spirit:
Fairly new to photography........keen to learn:
Fairly new to photography........keen to learn:
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- Tardigrade37
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- Charles Krebs
- Posts: 5865
- Joined: Tue Aug 01, 2006 8:02 pm
- Location: Issaquah, WA USA
- Contact:
What lines? (not fair, I know... they are gone now)
Actually I don't know! I went back to the original source files, the completed stack, the color corrected/edited "TIF" version I had saved and don't see a hint of them. I checked the "jpg" file that was "saved for web" in the folder that I use to upload to my site for the forum links, and this file is also without problems. So it happened somewhere from the point where I started to upload it. I'm not computer savvy enough to know how that could happen, but the only explanation I can see now is that it somehow was "corrupted" in the uploading process. I've never noticed it before.
edit... I've uploaded and replaced the image several times now. On a couple of occasions it showed these faint horizontal bands, and other times not! So it does appear to be an "uploading" problem.
Actually I don't know! I went back to the original source files, the completed stack, the color corrected/edited "TIF" version I had saved and don't see a hint of them. I checked the "jpg" file that was "saved for web" in the folder that I use to upload to my site for the forum links, and this file is also without problems. So it happened somewhere from the point where I started to upload it. I'm not computer savvy enough to know how that could happen, but the only explanation I can see now is that it somehow was "corrupted" in the uploading process. I've never noticed it before.
edit... I've uploaded and replaced the image several times now. On a couple of occasions it showed these faint horizontal bands, and other times not! So it does appear to be an "uploading" problem.
- rjlittlefield
- Site Admin
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My first thought after hearing "upload" and "corruption" was that there had been a glitch in one of the tables that JPEG uses to do its last bit of compression. That sort of error could conceivably propagate from being a small localized error in a lookup table to being a globally visible repeating pattern in the image.
It's odd that the problem is even semi-reproducible. Usually file corruption during upload is completely random. Puzzling...
--Rik
It's odd that the problem is even semi-reproducible. Usually file corruption during upload is completely random. Puzzling...
--Rik
- rjlittlefield
- Site Admin
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lol, oh dear! Its the heat today, finally got to me!rjlittlefield wrote:Thanks, but the pictures are from Charles. This sort of photography is far beyond my capabilities in every regard!Cyclops wrote:Lovely shots Rik, that first one is a real oddity,love it!
--Rik
Great shots Charles!
Canon 5D and 30D | Canon IXUS 265HS | Cosina 100mm f3.5 macro | EF 75-300 f4.5-5.6 USM III | EF 50 f1.8 II | Slik 88 tripod | Apex Practicioner monocular microscope
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- PaulFurman
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