Search found 2027 matches

by pwnell
Sat May 09, 2020 10:54 pm
Forum: Equipment Discussions
Topic: Why do I get image corruption?
Replies: 31
Views: 3842

If you are referring to a SD / CF card reader then it is impossible. These files are captured via USB directly from the camera to the PC. There are no SD/CF cards involved.
by pwnell
Sat May 09, 2020 8:47 pm
Forum: Equipment Discussions
Topic: Why do I get image corruption?
Replies: 31
Views: 3842

Why do I get image corruption?

I have a Canon 7D II tethered via USB3 to a Windows 10 PC. PC is very high end, worked for two years fine. Same with the camera. The USB3 cable is up to spec, also high end. Suddenly I am getting 1 - 5 corrupt images when shooting tethered in a session of about 1600 photos. Why is that? The actual R...
by pwnell
Tue Apr 28, 2020 3:02 pm
Forum: Photography Through the Microscope
Topic: Dragonfly
Replies: 1
Views: 857

Dragonfly

Image
Dragonfly male's secondary genitalia by Waldo Nell, on Flickr
Dragon fly, 2x, EPI-POL
by pwnell
Tue Apr 21, 2020 10:47 am
Forum: Photography Through the Microscope
Topic: Draparnaldia, Fagilaria, and Volvox
Replies: 17
Views: 4570

Fantastic details on the first one. Welcome back...
by pwnell
Tue Mar 31, 2020 5:04 pm
Forum: Photography Through the Microscope
Topic: Brownian Motion
Replies: 1
Views: 993

Brownian Motion

I just want to confirm - is this below brownian motion? I prepared some milk diluted with water and dyed with blue food dye. I placed that under a slide under a 60x objective and took a short video of the motion of what I believe to be the fat lipids in the milk.

https://youtu.be/ZPpUfoTU_bs
by pwnell
Tue Mar 10, 2020 9:21 am
Forum: Photography Through the Microscope
Topic: Saltwater samples
Replies: 10
Views: 864

Re: Saltwater Samples

MikeBradley wrote:Excellent images, thanks for posting them.
Perhaps you could briefly explain how the samples were obtained? Thank You
Michael
I collected them from White Rock Pier in White Rock, BC (Canada). If I recall correctly I would have used a 10µm net to trawl the water.
by pwnell
Tue Mar 10, 2020 9:20 am
Forum: Photography Through the Microscope
Topic: Saltwater samples
Replies: 10
Views: 864

rjlittlefield wrote:Lovely images!

I'm having trouble seeing image #4 as rotifers, however. To me they look more like tintinnid ciliates. Perhaps one of our specialists can chime in?
Thanks, Rik. It is very possible - I am not a specialist in the subject matter! Any corrections will be appreciated.
by pwnell
Mon Mar 09, 2020 1:44 pm
Forum: Photography Through the Microscope
Topic: Saltwater samples
Replies: 10
Views: 864

Saltwater samples

https://live.staticflickr.com/65535/49641423127_9a355cf2cc_b.jpg Barnacle cypris by Waldo Nell , on Flickr White rock pier, 10x, POL, HF B https://live.staticflickr.com/65535/49640624658_f16e2dc8b1_b.jpg Barnacle cypris by Waldo Nell , on Flickr White rock pier, 10x, DF, HF B https://live.staticfli...
by pwnell
Mon Mar 02, 2020 5:30 pm
Forum: Photography Through the Microscope
Topic: Can anyone ID this bacteria? (Yeah I know...)
Replies: 4
Views: 754

Here is a scale and another shot. The granules do not polarize, at least, when I photographed them I could barely notice any colour in the granules under cross polarizers.

Image
100x/1.4, DIC

Link to full size.
by pwnell
Mon Feb 24, 2020 4:47 pm
Forum: Photography Through the Microscope
Topic: Periwinkle Tongue
Replies: 6
Views: 1236

These are fabulous and very informative. I did not think a snail would have such a long tongue. What is the evolutionary benefit?
by pwnell
Mon Feb 24, 2020 4:44 pm
Forum: Photography Through the Microscope
Topic: Can anyone ID this bacteria? (Yeah I know...)
Replies: 4
Views: 754

Can anyone ID this bacteria? (Yeah I know...)

I get that it is near impossible to ID bacteria from a light microscope image alone without staining / other processing, but is it possible to narrow this down at least? It is long white filamentous bacteria that grows on newly introduced wood in a tropical aquarium - presumably feasting on sugars o...
by pwnell
Wed Feb 19, 2020 11:35 am
Forum: Photography Through the Microscope
Topic: Stigma
Replies: 0
Views: 820

Stigma

It's been a while. Still trying to catch up - these are from June 2017. https://live.staticflickr.com/65535/49557024748_8ed562c9a8_b.jpg Stigma of flower with pollen by Waldo Nell , on Flickr 40x/0.6*1.25, EPI-KL, HF A+B https://live.staticflickr.com/65535/49557523031_fe54d48307_b.jpg Stigma and sta...
by pwnell
Thu Jun 27, 2019 5:02 pm
Forum: Photography Through the Microscope
Topic: Flowers
Replies: 1
Views: 630

Flowers

https://live.staticflickr.com/65535/48140629627_707859d87c_b.jpg Grape Hyacinth by Waldo Nell , on Flickr Flower cross section, 2x*2, EPI-POL, HF B+C https://live.staticflickr.com/65535/48140536636_52796f0456_b.jpg Jack frost flower by Waldo Nell , on Flickr Jack frost flower, 2x*1.25, EPI-POL, HF B
by pwnell
Thu Jun 27, 2019 5:00 pm
Forum: Photography Through the Microscope
Topic: Geranium trichomes
Replies: 12
Views: 1452

This photo is really special - love it.
by pwnell
Fri Jun 07, 2019 11:01 am
Forum: Photography Through the Microscope
Topic: Fern and grass seeds
Replies: 7
Views: 942

Fern and grass seeds

https://live.staticflickr.com/65535/48020407247_a0332f9cb1_b.jpg Fern leaf underside by Waldo Nell , on Flickr Fern leaf underside, 4x, EPI-POL, HF B+C https://live.staticflickr.com/65535/48020306071_3d13afe96a_b.jpg Grass seed, by Waldo Nell , on Flickr Grass seed, 4x, EPI-POL, HF B+C https://live...