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...

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...

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...

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 ...

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.

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...