Search found 4639 matches

by Pau
Sat Oct 24, 2020 9:37 am
Forum: Photography Through the Microscope
Topic: Art of Physics & Chemistry
Replies: 3
Views: 18

Re: Art of Physics & Chemistry

Hi KarlGaff, welcome to the forum! You have posted truely excellent cross polarization images, a good presentation of your work, but please be aware of our posting guidelines: The image posting limit for all Image Galleries is six (6) images during the course of one (1) calendar day take a look at h...
by Pau
Mon Oct 19, 2020 8:06 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Laser aiming and focus in photomacrography
Replies: 35
Views: 41388

Re: Laser aiming and focus in photomacrography

This is my version, much worse looking than the original by Chris but working well Just a Chinese spare eyecup for my Canon DSLR, a 12mm diameter plastic tube wall fixation, some epoxy, a battery box and a switch. IMG_0514br.jpg IMG_0516br.jpg IMG_0519br.jpg I've observed that if I forget switching ...
by Pau
Thu Oct 15, 2020 9:10 am
Forum: Equipment Discussions
Topic: New Mitutoyo apo 10x
Replies: 48
Views: 1464

Re: New Mitutoyo apo 10x

Admin note: Topic moved from General Discussion Forum and Community Announcements forum because the subject fits better in Equipment Discussions
by Pau
Thu Oct 15, 2020 9:05 am
Forum: General Discussion Forum and Community Announcements
Topic: Nikon Small World 2020
Replies: 3
Views: 395

Nikon Small World 2020

Nikon Small World 2020 Photomicrography Competition awards, take a look at https://www.nikonsmallworld.com/galleries/2020-photomicrography-competition Quite few pictures are from forum members, hunt for them And here you have the videos: https://www.nikonsmallworld.com/galleries/2020-small-world-in-...
by Pau
Fri Oct 09, 2020 12:04 pm
Forum: Equipment Discussions
Topic: Nikon BHMJ adaptation
Replies: 7
Views: 2967

Re: Nikon BHMJ adaptation

Great work again, Saul
Nikon BHMJ
:-k BHMJ is an Olympus model, I don't know the existence of this denomination in Nikon models, what am I missing?
by Pau
Wed Oct 07, 2020 11:06 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: sunset moth
Replies: 17
Views: 664

Re: sunset moth

What's the WD?
I have an older Nikon MPlan Apo 40/0.80 and its WD is only 0.7mm
by Pau
Tue Oct 06, 2020 12:07 pm
Forum: Equipment Discussions
Topic: DSLR adaptation to Nikon AZ100 38mm Photoport
Replies: 12
Views: 983

Re: DSLR adaptation to Nikon AZ100 38mm Photoport

I've received the parts, mounted and preliminary tested the whole setup. I've coupled the camera with a bellows and this has allowed me to find the parfocal point. Finding it has taken me lots of attempts but now it's done: The distance from the V-T end to the sensor is 164mm (120mm up to the Canon ...
by Pau
Tue Oct 06, 2020 4:25 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Olympus MPlan 10x/0.25
Replies: 6
Views: 323

Re: Olympus MPlan 10x/0.25

If you are planning to use it for macro style work (direct projection without eyepiece) be aware of that most finite objectives of this vintage need compensating eyepieces to complete the aberrations correction of the objective. I'm not sure with this one but almost sure.
Alan, correct me if wrong
by Pau
Mon Oct 05, 2020 2:34 am
Forum: Equipment Discussions
Topic: Olympus BX stage keeps drifting down, "focus shifting".
Replies: 20
Views: 659

Re: Olympus BX stage keeps drifting down.

If drifting down continues over the time (not just until the temperature is constant) it will not be due to thermal expansion. I don't know if it can happen with BX models but with CH and BH if someone has forced to turn the fine focus knobs in opposite senses they unscrew from the axis and get loos...
by Pau
Fri Oct 02, 2020 11:18 am
Forum: Equipment Discussions
Topic: Which T2 adapter ring for Canon EOS 600D?
Replies: 2
Views: 250

Re: Which T2 adapter ring for Canon EOS 600D?

Hi Martin, welcome aboard! Is this Meiji equipment what you have? MA 150.jpg The adapter will be fully adequate if the photoeyepiece is. Because the Canon APSC sensor is smaller than the 35mm film you will see a bit too much crop if you use the same photoeyepiece (the standard magnification for 35mm...
by Pau
Fri Oct 02, 2020 9:09 am
Forum: Equipment Discussions
Topic: DIY Fluorescence with Zeiss fluoro condenser - help needed
Replies: 72
Views: 5017

Re: DIY Fluorescence with Zeiss fluoro condenser - help needed

Of course you can test any material just by seeing if it blocks fluorescence of paper when inserted into the UV light path; I am not sure there is a need for anything more complicated. Is this not sufficient? Lacking access to spectrophotometers this is basically what I do, white paper and textiles...
by Pau
Fri Oct 02, 2020 1:24 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Eyepiece projection, yes or not??
Replies: 14
Views: 678

Re: Eyepiece projection, yes or not??

The reference tube length is the distance from the objective shoulder to the eyepiece shoulder. In most systems including Nikon the primary image is expected 10mm below the eyepiece shoulder -this is why Itchty recommends 150mm for 160 objectives and 200mm for 210 ones-, but this matters without eye...
by Pau
Wed Sep 30, 2020 11:02 am
Forum: Equipment Discussions
Topic: DSLR adaptation to Nikon AZ100 38mm Photoport
Replies: 12
Views: 983

Re: DSLR adaptation to Nikon AZ100 38mm Photoport

In some Nikon SMZ stereos pdfs I've found the camera adapter I need but only named " F mount adapter " without a model number/designation useful to find it. Clearly it couples into the 42mm V-T tube I already have ordered. If I can't find it likely it will be substituted with a custom adapter based ...
by Pau
Wed Sep 30, 2020 10:25 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Eyepiece projection, yes or not??
Replies: 14
Views: 678

Re: Eyepiece projection, yes or not??

What kind of projective?, please

Your Nikon objectives, are marked 160/0.17...210/0 or...?

If you get more magnification this can easily lead to less crisp image, in particular with your 40X you can easily get empty magnification