Search found 2031 matches

by pwnell
Sun May 10, 2020 2:08 pm
Forum: Equipment Discussions
Topic: Why do I get image corruption?
Replies: 31
Views: 9173

I once had similar issues. It turned out to be not quite fully seated M.2 extension card. Yours could naturally be something completely different. My PC is overclocked however it has been stable for years. I have removed the overclock to see if that helps. Hardware should be fine ... 1.5kW PSU, liq...
by pwnell
Sun May 10, 2020 9:42 am
Forum: Equipment Discussions
Topic: Why do I get image corruption?
Replies: 31
Views: 9173

Hi; When viewing the raw images with default windows photo app I had problems like this before. Did you try opening the corrupted raw image with capture one or lightroom etc? Just an experience. If there is no difference I also think it is about usb ports, try using the main usb ports on motherboar...
by pwnell
Sun May 10, 2020 9:41 am
Forum: Equipment Discussions
Topic: Why do I get image corruption?
Replies: 31
Views: 9173

Macro_Cosmos wrote:I'll start with using another camera to shoot tethered.
As I said there is no card reader. I do not have another camera I can tether, and I do not have another PC unfortunately. Shutter count is much less than what I had on the much poorer built T3i before the 7D II so I do not think it is that.
by pwnell
Sat May 09, 2020 11:01 pm
Forum: Equipment Discussions
Topic: Why do I get image corruption?
Replies: 31
Views: 9173

Smokedaddy wrote:Looks like I need to learn how to read. 8) Maybe the USB 3 port.
All good - I could have been more clear. I have switched to a different USB3 controller on the same PC - will see if that makes a difference.
by pwnell
Sat May 09, 2020 10:54 pm
Forum: Equipment Discussions
Topic: Why do I get image corruption?
Replies: 31
Views: 9173

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: 9173

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: 1013

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: 6966

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: 1222

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: 1983

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: 1983

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: 1983

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: 1087

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: 1652

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: 1087

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...