Search found 447 matches

by René
Wed Jun 17, 2020 12:52 am
Forum: Equipment Discussions
Topic: Nikon Diaphot TMD w/ DIC -- Help!
Replies: 25
Views: 5034

Hi, René - Well, higher magnifications are OK on the .55 NA DIC condenser for the Diaphot, but the results are inevitably limited and there isn't much point in using the scope as configured for that, to my way of thinking. If nothing else, using high NA objectives on the Diaphot requires super thic...
by René
Mon Jun 15, 2020 2:05 pm
Forum: Equipment Discussions
Topic: Nikon Diaphot TMD w/ DIC -- Help!
Replies: 25
Views: 5034

[Given the NA .52 limit of the Nikon DIC LWD condenser, and given the likely need/desire to use LWD objectives, high magnification objectives are of limited usefulness on the standard Diaphot. Don't dismiss high mag objectives for this reason. I've worked routinely on an Olympus IMT2 with 0.55 cond...
by René
Mon Jun 15, 2020 12:51 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

Nah, I was too fed up with exchanging the condensor top the whole time, and that in the lower, most used range. Sold it. But I know many people very happy with the older Zeiss DIC. A dutch microphotographer told me he loves it for its subtle effect. Kept the Zeiss Standard stand by the way. I think ...
by René
Sun Jun 14, 2020 5:50 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

My prediction would then be that the Zeiss system with a single objective prism that is located further from the objective would be more forgiving than the Zeiss system with objective-specific prisms. But the latter could probably deliver superior DIC when properly matched. I wonder if this is cons...
by René
Sun Jun 14, 2020 5:32 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

I meant how the background changes when you translate the prism, if you can get a full range from dark grey to strong blue/green/red with most of these combinations? Well, now I'm just being lazy. I shall soon be able to test it myself. Ah, oh yes, no problem. Very exciting for the first time, but ...
by René
Sun Jun 14, 2020 4:40 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

It came out to a whopping 7000 GBP, which, in today's currency, is equivalent to £35,000 ($43,000) according to inflationtool.com! Of course there are many things that cost a lot of money in 1978 that are worthless today. But it's still a bit thrilling to think about. Ah yes, lab stuff is expensive...
by René
Sun Jun 14, 2020 4:22 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

So I guess it's fair to say this DIC system is quite forgiving in the use of other brand lenses, which is a good thing if you want to settle with a serie that combines well in planicity and chromatic abberation. Some of the lenses I found that didn't work were Wild fluotars 10/0.45 and 20/0.6 (shame...
by René
Sun Jun 14, 2020 3:37 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

And another set with somewhat exotic lenses: http://www.photomacrography.net/forum/userpix/154_IMG_1773_1.jpg W&H Seibert '4' 30x, NA around 0.6 http://www.photomacrography.net/forum/userpix/154_IMG_1774_Seibert_30x06_DIC_1.jpg Leitz 25/0.60 salt water immersion (45mm, TL170) http://www.photomacrogr...
by René
Sun Jun 14, 2020 3:21 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

I've put some more lenses on the test for this system: http://www.photomacrography.net/forum/userpix/154_IMG_1739_1.jpg Leitz achro 25/0.50 (45mm, TL170) http://www.photomacrography.net/forum/userpix/154_IMG_1744_Leitz__25x050_DIC_1.jpg Leitz NPl Fluotar 25/0.75 oil immersion (45mm, TL160*) http://w...
by René
Sun Jun 14, 2020 3:03 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

What. A. Monster. M LOL. They do indeed compete with english microscopes from the time for that 'industrial' look. Agreed, Olympus was king in the illumination system. Anyway, here's my system: http://www.photomacrography.net/forum/userpix/154_IMG_1737_5.jpg http://www.photomacrography.net/forum/us...
by René
Fri Jun 12, 2020 3:24 am
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

Hi Pau, I should be able to make some time this weekend and get some images for review!

Best wishes,

René
by René
Fri Jun 12, 2020 2:08 am
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

Hi Viktor, that's a serious microscope, good luck with cleaning. Does it have the 30 mm SWF eyepieces? I've got an old (grey) BH stand with the super widefield tubus and FOV26 eyepieces. The newer BH2 SWF eyepieces are slightly better along the edge of view. Got the DIC unit separately with this sta...
by René
Fri Jun 05, 2020 4:45 pm
Forum: Equipment Discussions
Topic: Olympus BH-NIC DIC with Nikon CF long-barrel optics?
Replies: 56
Views: 2804

Hi viktor, I've got one of those. The old PL lenses (with phase rings) are ##### in dic. The newer splanapos don't work with it. Try leitz npl fluotars! I have 10, 25, 40, 40 oil and 100 apo in use..

Best wishes, René
by René
Wed May 06, 2020 3:39 pm
Forum: Photography Through the Microscope
Topic: Diatoms in Circular Oblique Light Update 06/05
Replies: 25
Views: 2253

Hi Walter, great images again! Number 18 is Trachyneis aspera, a beautiful and common diatom in the North Sea. The definition for resolution is the abilty to resolve two points at the said distance. And it is only an estimate as it depends on the structures and the type of illumination. Best wishes,...
by René
Mon Dec 17, 2018 1:43 am
Forum: Equipment Discussions
Topic: Oil in objective, repairable?
Replies: 8
Views: 2816

Hi all, thanks for your thoughts. I didn't have the illusion that I could take such an objective apart and back together as new, but it is worth a try. Got a Leitz objective in the past that gave not as good an image as I expected from the aperture, so I decided to take a gamble and disassemble it. ...