Search found 4621 matches

by Olympusman
Mon Oct 15, 2012 1:21 pm
Forum: Equipment Discussions
Topic: Simpson optical coated lens 16mm
Replies: 3
Views: 1270

Lens

That looks like a projector lens and may not work reversed.
by Olympusman
Mon Oct 15, 2012 12:52 pm
Forum: Photography Through the Microscope
Topic: unknown small testate amoebae
Replies: 6
Views: 1167

Testate amoeba

Ferry,
That's a great resource for amoebae. I am working off some old and new pond dips and finding hundreds of tests in a single drop, but none that are occupied. Do you know if methyl cellulose has an adverse effect on amoebae?
by Olympusman
Tue Oct 09, 2012 11:00 am
Forum: Equipment Discussions
Topic: Flash Trigger Voltages
Replies: 6
Views: 1456

Sync voltages

Harold, Over the past few months I have been accumulating Vivitar 283 flashes and their accessories (hoods, diffusers, color filters) so that I now have a set of six units for Strobist photography. I went through them all and tested their sync voltages and found them to have a range from 5 to 250 VD...
by Olympusman
Mon Oct 08, 2012 12:20 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: The Sensitive Issue Of Legacy Flash And Digital Sensors
Replies: 6
Views: 2204

Legacy flash

Olympus DSLR and PEN cameras do not provide TTL metering with Olympus OM-series electronic flashes. The camera will fire them (essentially say GO!) but will not do the TTL math. You also have to very careful using legacy flash units with digital cameras since they use electronic rather than mechanic...
by Olympusman
Mon Oct 08, 2012 11:53 am
Forum: General Discussion Forum and Community Announcements
Topic: Outreach
Replies: 19
Views: 5495

Outreach

Thanks Tom, Mounting an exhibit like this is a long an arduous process. It starts with a portfolio presntation and prospectus for the exhibit and arranging the contract. Then the venue has to find time window for the installation. Nest comes applying for a grant with the state arts council, which wi...
by Olympusman
Fri Oct 05, 2012 8:16 am
Forum: General Discussion Forum and Community Announcements
Topic: Outreach
Replies: 19
Views: 5495

Outreach

I mounted an exhibit of focu stacked insects at a local science center frequented by school groups and it was a very satisfying experience. Forunately, I received a grant from the state arts council to defray part of the cost of the exhibit. There'as a video at http://www.youtube.com/watch?v=7-AIjC0...
by Olympusman
Wed Jul 18, 2012 10:42 am
Forum: Equipment Discussions
Topic: What are the major differences between these two Amscopes?
Replies: 12
Views: 3701

Phase contrast

If you are just starting out, a phase contrast scope may not be the type for you. Phase contrast is most practical for imaging of subjects that are virtually transparent such as protists. They usually form a halo around the subject that actually reduces the detail of the specimen. You can see exampl...
by Olympusman
Fri Jul 13, 2012 10:03 am
Forum: Equipment Discussions
Topic: What are the major differences between these two Amscopes?
Replies: 12
Views: 3701

Amscope microscopes

I have three Amscope microscopes -- a stereo zoom, a phase and a trinocular. I've never paid more than $1000 for any one of them. Over time, I have upgraded some of the non-plan objetives to plans and have purchased better condensers. I would say for a casual user who is not a researcher, they are a...
by Olympusman
Tue Jul 10, 2012 9:49 am
Forum: Photography Through the Microscope
Topic: Yeast DE-DIC
Replies: 15
Views: 2373

Brewers Yeast

Mitch,
How much are you using and how large is the jar? Yeast really get going, so are you using just a pinch?
by Olympusman
Wed May 23, 2012 8:53 am
Forum: General Discussion Forum and Community Announcements
Topic: The Enemy Within: A Cautionary Tale Of Security Software
Replies: 11
Views: 2532

Panda

I have always been very suspicious of any freeware from Panda. You will notice that these apps are written by Chinese. The Chinese are actively trying to get into our computers. One of their free apps is an exif reader that allows you by clicking on any image to automatically show you the exif data....
by Olympusman
Fri May 18, 2012 9:49 am
Forum: General Discussion Forum and Community Announcements
Topic: 2 relevant articles
Replies: 13
Views: 6538

Fly Times

I particularly found the article on rehydrating specimens to restore eye color of great value.
by Olympusman
Mon Apr 23, 2012 12:25 pm
Forum: Beginners Micro
Topic: Slide making
Replies: 7
Views: 3817

Slide making

I have found that using Canada Balsam on pollen grains acts as a solvent and pulls the pigments out of pollen grains. The technique I have adopted is to shake the pollen grains onto the center of a slide with an Exacto knife and make a border around them of balsam using a toothpick the dimensions of...
by Olympusman
Thu Apr 19, 2012 10:31 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: macro om 80mm or 38mm + om bellows
Replies: 41
Views: 9833

80mm OM lens

I have the 80mm OM Macro and it is a spectacular lens. Howere, it cannot be mounted directly to an Olympus Four thirds body because the rear of the lens extends back quite a bit. It can only be used on a bellows or on extension tubes, and even then, it won't work with all extension tubes. I have a f...
by Olympusman
Mon Apr 16, 2012 11:37 am
Forum: Photography Through the Microscope
Topic: interstitial pneumonia
Replies: 3
Views: 895

Pneumonia slide

A few years ago my wife got me one of those sets of 100 prepared slides that you see on ebay. Lately, I have been finding sets of prepared human pathology slides with examples of tissues and diseases such as cancers, used for teaching. More interesting than plant cross-sections and frog and rabbit t...