Search found 36 matches

by macrochemistry
Sun Mar 11, 2012 2:52 pm
Forum: Equipment Discussions
Topic: JML 5.4" f:4.5 Copy Lens
Replies: 9
Views: 3187

Hmm 5.4" f/4.5 sounds like it's made for medium format reproduction... but this has no aperture and looks more like a projection lens so I have no clue. Might very be good but I guess it's not better than average.

I like to see some testshots :)
by macrochemistry
Mon Feb 27, 2012 6:35 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Preparation of slides and cover slips
Replies: 2
Views: 1505

Do you have acess to basic chemicals? If not, is sodium hydroxide based drain cleaner available in the UK? It's sold here as granules with 90%+ NaOH, some Aluminium and tensides for about 3-5€/500-1000g. And it's also avaible as 50% solution with blue dye and tensides in supermarkets here. Both will...
by macrochemistry
Mon Feb 27, 2012 6:11 pm
Forum: Equipment Discussions
Topic: Which microscope?
Replies: 14
Views: 2974

I've asked the seller if an inspection of the unit could be arranged prior to purchase. The response may or may not be an accurate indicator. I have no inclination or intention to buy the unit, but shipping costs to Australia are listed as GBP 36.50 :-s Such an amount for shipping does not appear s...
by macrochemistry
Mon Feb 27, 2012 5:07 pm
Forum: Equipment Discussions
Topic: A good and cheap infintie RMS or M27 100x objective?
Replies: 0
Views: 714

A good and cheap infintie RMS or M27 100x objective?

Hello. I got some nice old preparations of different parasites and some diseases in human blood. But I don't have any usable 100x objective for that (I think 800-1000x will be necessary effectivly). I'm looking for something between 40-100€ (also used of course). Infinite ones with RMS or M27 would ...
by macrochemistry
Fri Feb 24, 2012 4:23 pm
Forum: Equipment Discussions
Topic: Best camera for photomicrography?
Replies: 9
Views: 3610

NEX-M42 adapter would be a good start as M42 bellows and extension tubes are cheap and easily adaptable to M39, RMS, M26, M27, retroadapters, etc. NEX 7 has a lot more functions, 24MP instead of "only 16MP" ;) which I guess will produce a better picture quality at ISO 100-400, it has many more butto...
by macrochemistry
Thu Feb 23, 2012 3:48 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: A few questions
Replies: 30
Views: 8058

Dou you have any light leaks in your setup etc.? Or a dirty lens? Not only the sharpness is bad, also the contrast and glow is very "vaseline". http://janrik.net/MiscSubj/2012/topic15960/2-7-2012%2011-08-48%20PM.jpg This looks like an problem with the stacking software for me (or maybe vibration but...
by macrochemistry
Thu Feb 23, 2012 3:13 pm
Forum: Equipment Discussions
Topic: Live view software
Replies: 8
Views: 3174

Re: Live view software

Youre in the the wrong section here. I don't know your model but most Sony except Sony A700- and I think the fullformat DSLRs only have HDMI- or (older ones) analog video output wich could be used for live view and no remote software for PC. I used my NEX-5N with (mini-)HDMI cable on a 24" computer ...
by macrochemistry
Mon Feb 20, 2012 6:22 pm
Forum: Equipment Discussions
Topic: 12 lenses at 5X, full frame test
Replies: 8
Views: 2280

Did you use the Rodagons stopped down? I compared my Rodagon 50 2.8 (which looks very different to yours) against El Nikkor 50 2.8. To my suprise the Rodagon was much weaker wide open, but stopped down a little ~to 5.6 it was a tack better than the El Nikkor, with much better overall contrast and co...
by macrochemistry
Mon Feb 20, 2012 3:49 pm
Forum: Equipment Discussions
Topic: Places to buy new objectives
Replies: 2
Views: 1093

What kind ob objectives? Cheap or expensive ones?
If you are located in Europe and want cheap objektivtes you could give http://www.mueller-optronic.com/xtcomme ... anguage=en
a try.
by macrochemistry
Mon Feb 20, 2012 4:12 am
Forum: Equipment Discussions
Topic: Best camera for photomicrography?
Replies: 9
Views: 3610

In the below 1000€ class the Sony NEX 5N should be the best camera has the best image quality and no field relevant vibration at all (half electronical shutter). Cost around 500€ for the body or 590€ for a kit only +it has a HDMI output and the best and most noisefree liveview you can imagine - you ...
by macrochemistry
Sun Feb 19, 2012 7:13 pm
Forum: Equipment Discussions
Topic: 3 cheap tube lens substitutes - comparision
Replies: 3
Views: 1661

Really interesting experiment - thanks :) Forgive my ignorance but you have mounted your setup on your microscope but would they equally work with an infinity objective attached to the front of the tube lens with a suitable adapter? I lack a tube lens so haven't been able to try infinity lenses so ...
by macrochemistry
Sat Feb 18, 2012 8:04 pm
Forum: Photography Through the Microscope
Topic: snowflakes
Replies: 8
Views: 1647

How did you manage it to keep them cool enough for taking pictures?
Did you make the fotos outside?
by macrochemistry
Sat Feb 18, 2012 7:50 pm
Forum: Equipment Discussions
Topic: 3 cheap tube lens substitutes - comparision
Replies: 3
Views: 1661

3 cheap tube lens substitutes - comparision

I've tested 3 lenses as tube lens substitutes. The competitors are the Schneider Kreuznach G-Claron 150 f/9 (APO), Rodenstock Rodagon 150mm f/5.6 and Tokina RMC 200mm F3.5. I payd 40€ for the Rodagon, 22€ for the G-Claron and the Tokina RMC is a heirloom from my father, but usually goes between 15€ ...
by macrochemistry
Thu Feb 09, 2012 6:41 pm
Forum: Photography Through the Microscope
Topic: Possible Genus: Eunotia??
Replies: 1
Views: 924

I don't know but somehow it reminds me to SpongeBob Square Pants :D
by macrochemistry
Wed Feb 08, 2012 6:27 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: A few questions
Replies: 30
Views: 8058

I also guess the problem is vibration. Try to fix the camerabody (and the lens!) on a heavy and hard wooden plate to absorb most of the Well, the objective has all the right markings. 10/0.25 160/0.17 Isn't this objective designed for an 0.17mm thick cover slip? Could this be what's limiting the res...