Search found 5861 matches

by Charles Krebs
Sat Apr 25, 2020 10:59 pm
Forum: Photography Through the Microscope
Topic: Radiolarians
Replies: 4
Views: 998

Both of your radiolarian posts are great to look over. A lot of work here. Nice job!
by Charles Krebs
Sat Apr 25, 2020 10:57 pm
Forum: Photography Through the Microscope
Topic: Darkfield Flash
Replies: 3
Views: 964

I like it! Dramatic use of darkfield.
by Charles Krebs
Sat Apr 25, 2020 10:52 pm
Forum: Photography Through the Microscope
Topic: Blepharisma the pink ciliated (video)
Replies: 8
Views: 1493

Excellent quality video!
by Charles Krebs
Sat Apr 25, 2020 10:48 pm
Forum: Photography Through the Microscope
Topic: Sunset Moth
Replies: 8
Views: 1199

Hard to believe it took you so long to play arouond with this moth. :wink:

The 10X has a NA of 0.20. The DOF is around 10-12 microns.

The 3X has an NA of 0.09. The DOF is around 60 microns.
by Charles Krebs
Sat Apr 25, 2020 10:29 pm
Forum: Photography Through the Microscope
Topic: Crystallized Vitamin C
Replies: 4
Views: 1004

Neat... a cell phone shot. As you "hand-holding" or have you set it up on one of those brackets?
by Charles Krebs
Sat Apr 25, 2020 10:27 pm
Forum: Photography Through the Microscope
Topic: Crab Louse in darkfield and DIC
Replies: 9
Views: 1818

Nice set! I'm partial to the darkfield myself, very 3-dimensional and great light light on the upper surface (is the body somewhat translucent?)
by Charles Krebs
Sat Apr 25, 2020 10:19 pm
Forum: Photography Through the Microscope
Topic: Algae
Replies: 2
Views: 1224

Saul,
I'm a bit confused about your lighting. What difference do you see compared to "normal light"? (Normally chlorophyll gets really red under UV).
by Charles Krebs
Wed Apr 22, 2020 4:31 pm
Forum: Photography Through the Microscope
Topic: Keratella cochlearis
Replies: 4
Views: 1051

Keratella cochlearis

Front to back this rotifer measures about 260 microns. These are live specimens, but held in place by a coverslip (dropping lower as water evaporates). The second image is a bottom view. The third shows an egg held underneath at the rear. (If you look carefully you can make out the rotifer inside th...
by Charles Krebs
Tue Apr 21, 2020 1:59 am
Forum: Photography Through the Microscope
Topic: Draparnaldia, Fagilaria, and Volvox
Replies: 17
Views: 3695

Draparnaldia, Fagilaria, and Volvox

I haven't been around in quite some time, but now that (unfortunately) I have some time on my hands, the microscopes were dusted off.

Image

Image

Image
by Charles Krebs
Sun Sep 16, 2018 5:06 pm
Forum: Photography Through the Microscope
Topic: Aphid massacre
Replies: 8
Views: 1143

Aphid massacre

Haven''t been able to photograph much lately but here are few new shots. Over the course of a few days I observed a blackberry shoot with a very robust aphid "infestation". Very quickly the aphid predators arrived on the scene. I've seen syrphid fly, lady bug and lacewing larvae devour aphids on man...
by Charles Krebs
Fri Jul 06, 2018 10:26 pm
Forum: Photography Through the Microscope
Topic: dinoflagellate Noctiluca scintillans
Replies: 8
Views: 1773

dinoflagellate Noctiluca scintillans

Last time I used my plankton net there were a great many Noctiluca present. There can be very dense "blooms" of these creatures in Puget Sound (and in many areas worldwide). They also emit a soft blue bioluminescence when the water is disturbed. http://www.krebsmicro.com/forumpix/retouched-5717-5724...
by Charles Krebs
Thu Jul 05, 2018 7:37 pm
Forum: Photography Through the Microscope
Topic: Eggs on waters surface (mosquito?)
Replies: 6
Views: 1232

Eggs on waters surface (mosquito?)

I came across a few small "rafts" of eggs on the surface of a really "ripe" outdoor container. After photographing them I kept them in a dish of clean spring water hoping to see what would hatch out. Unfortunately they succumbed to the bacteria and fungus they were laid on. So I never found out what...
by Charles Krebs
Wed Jul 04, 2018 9:57 pm
Forum: Photography Through the Microscope
Topic: Paramecia
Replies: 5
Views: 1305

Paramecia

Not enough scope-time lately. But I do have a few new images that I'll post this week. Had a good session with some paramecia recently. Here are a few shots. http://www.krebsmicro.com/forumpix/0041_1024tai.jpg http://www.krebsmicro.com/forumpix/0163-v2-1024tai.jpg http://www.krebsmicro.com/forumpix/...
by Charles Krebs
Tue May 08, 2018 11:14 pm
Forum: Equipment Discussions
Topic: Canon 6D silent mode problems, vibrations at exposure start
Replies: 43
Views: 5756

Alex, The first thing to do is to make certain that you are, in fact, utilizing EFSC. (Based on what you have said, it certainly does sound like you are). Canon started out great as a low vibration DSLR with the 40D and 50D models. Unfortunately after that it has been a mixed bag. While they make wi...