Search found 46 matches

by georgetsmurf
Tue Feb 08, 2011 3:10 am
Forum: Equipment Exchange
Topic: Wanted, Dark-field Condenser
Replies: 0
Views: 2357

Wanted, Dark-field Condenser

I am looking for a affordable dark-field condenser to fit my S series Nikon microscope. The mount diameter is 36.70mm (a bit of a strange size for a japanese product) but that is what it measures with a vernier. There are obviously brand new products around but even a Russian LOMO is several hundred...
by georgetsmurf
Sat Jan 29, 2011 1:48 am
Forum: Photography Through the Microscope
Topic: 1st stack-tiny spider
Replies: 2
Views: 1090

Rik said I'm bothered that the center looks clean but the edges look soft and the lower left corner looks radially smeared with color fringes. I'm wondering if that particular objective is one of the older Nikons that was not CF. You are probably right. This objective came with the microscope sold a...
by georgetsmurf
Sat Jan 29, 2011 12:24 am
Forum: Photography Through the Microscope
Topic: 1st stack-tiny spider
Replies: 2
Views: 1090

1st stack-tiny spider

This is my first real attempt at stacking. Subject is a 2mm long (actual) spider (unknown to me). Method is: S series Nikon microscope, PB-6 bellows, Nikon Po 4 0.1 objective, Nikon D300s, direct lighting from dichroic (qi) light-source + small reflector. This image produced from a stack of 89 image...
by georgetsmurf
Sat Jan 22, 2011 3:05 am
Forum: General Discussion Forum and Community Announcements
Topic: Mirror microscope ?
Replies: 4
Views: 1577

Mirror microscope ?

I just watched the most amazing documentary about the history of astonomy telescopes. I never knew that it was Newton who produced the first reflective telescope to elliminate the problem of varying refractice indices effect using lenses. I also didn't relise the very basic and now obvious way that ...
by georgetsmurf
Sat Jan 22, 2011 12:38 am
Forum: General Discussion Forum and Community Announcements
Topic: Zeren Stacker Sales
Replies: 14
Views: 3448

Rik says
No, you really don’t want those. Pirated versions of Zerene Stacker can be found these days on lots of “shareware” sites.
Thanks for that Rik-I suspected as such. I have now purchased a version based on your instructions. All done.
Cheers George. :)
by georgetsmurf
Fri Jan 21, 2011 9:57 pm
Forum: General Discussion Forum and Community Announcements
Topic: Zeren Stacker Sales
Replies: 14
Views: 3448

Zeren Stacker Sales

I have currently a trial version of Zerene Stacker but am rapidly nearing the end of the trial period without getting much use as my setup as been held up because of other bits that have been ordered (eg a shutter remote for my D300s ordered in December) and not turning up. Is there a recommended we...
by georgetsmurf
Thu Jan 20, 2011 4:58 am
Forum: General Discussion Forum and Community Announcements
Topic: Old Nikon S Series Compound Microscope Up For Sale
Replies: 7
Views: 1991

Mitch said I recently bought a Nikon Fluophot and now think it was a mistake. There are very few parts left for them anywhere. While the S series scopes seem to have warehouses full of still working and cheaply available parts. I may have to reconsider buying one next time it comes up. That one sol...
by georgetsmurf
Thu Jan 20, 2011 4:54 am
Forum: General Discussion Forum and Community Announcements
Topic: Old Nikon S Series Compound Microscope Up For Sale
Replies: 7
Views: 1991

Mitch said I recently bought a Nikon Fluophot and now think it was a mistake. There are very few parts left for them anywhere. While the S series scopes seem to have warehouses full of still working and cheaply available parts. I may have to reconsider buying one next time it comes up. That one sold...
by georgetsmurf
Thu Jan 20, 2011 4:34 am
Forum: General Discussion Forum and Community Announcements
Topic: Old Nikon S Series Compound Microscope Up For Sale
Replies: 7
Views: 1991

Mitch said regarding George's comment. Have you used it yet to see image quality? I was curiuos how they compare with newer scopes. I have only done some sample photography through it using non-Nikon objectives however observation using the Nikon objectives that came with it look superb. They are Po...
by georgetsmurf
Thu Jan 20, 2011 1:35 am
Forum: General Discussion Forum and Community Announcements
Topic: Old Nikon S Series Compound Microscope Up For Sale
Replies: 7
Views: 1991

Re: Old Nikon S Series Compound Microscope Up For Sale

Old Nikon S Series Compound Microscope in a Wooden Box[/url] up for sale on E-Bay. This is the same model as the one I have recently picked up on Ebay in Australia. Mine came as a monocular with circular rotating stage and polarizer Analizer. I am currrent modifying to binocular using a beautiful C...
by georgetsmurf
Sun Jan 16, 2011 12:02 am
Forum: Equipment Discussions
Topic: Camera problem?
Replies: 22
Views: 4870

Re: Camera problem?

My Sony Alpha 200 seems to be having a problem when I shoot faster than 1/250 seconds. As Charles says it lookss like a flash-shutter synchronisation problem however saying that, it seems strange that the camera doesn't automatically select for the correct shutter speed when you are using flash? Or...
by georgetsmurf
Fri Jan 07, 2011 3:22 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Macro Flash Calculations
Replies: 17
Views: 4251

It would be interesting to know what calculations/algorithms are used for TTL metering with a dedicated ring flashes. .... They measure photons rather than juggle electrons ! The reason why some cameras can't TTL meter macro flash is because they either can't measure the amount of reflected light f...
by georgetsmurf
Fri Jan 07, 2011 9:44 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Macro Flash Calculations
Replies: 17
Views: 4251

I would have thought light intensity is always a inverse square function of distance from the source with the exception maybe of a concentrated parellel or controlled-focus beam eg laser. :?: It applies to a point source, not a "wall of light" such as the sun in the sky or a flashgun at close quart...
by georgetsmurf
Fri Jan 07, 2011 4:15 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Macro Flash Calculations
Replies: 17
Views: 4251

Just one comment. For macro work the change in light intensity varies in +/_ inverse proportion to the distance of the flashgun from the subject, not its square, as in normal photography. Harold Interesting. If that is the case at what point does "normal photography" become macro photography? I wou...
by georgetsmurf
Fri Jan 07, 2011 12:31 am
Forum: Nature Photography -- Macro and Close-up
Topic: Some more bees ;-))
Replies: 6
Views: 1265

Re: Some more bees ;-))

Great bee shots. Are these bees both native to where you have photographed them. Bees, when introduced to other areas can be very clever at forraging while not really contributing to pollination. Especially Apis melifera (common honey bee). The french cuckoo bee looks like a close relative to me. Ch...