Search found 4646 matches

by Pau
Tue Oct 27, 2020 9:11 am
Forum: Photography Through the Microscope
Topic: Stentor roeseli
Replies: 3
Views: 81

Re: Stentor roeseli

Excellent pictures and video!
by Pau
Tue Oct 27, 2020 9:10 am
Forum: Photography Through the Microscope
Topic: Burbujas. Luz polarizada.
Replies: 2
Views: 139

Re: Burbujas. Luz polarizada.

Nice geometry and colors!
by Pau
Tue Oct 27, 2020 8:18 am
Forum: Photography Through the Microscope
Topic: Porcupine quill
Replies: 8
Views: 141

Re: Porcupine quill

Interesting structure, it's awesome how many different things can be made with just keratin. Are the colors only due to polarized light or is it a stained slide?. Nice picture in any case! Porcupine quills are a normal souvenir for tourists coming from some African countries, I have few ones after a...
by Pau
Mon Oct 26, 2020 11:41 am
Forum: Photography Through the Microscope
Topic: Dunaliella salina
Replies: 3
Views: 128

Dunaliella salina

Dunaliella salina is a highly halophile unicellular Chlorophyte alga that in some stress related situations produces high concentration of red carotenoids and in many cases is the main cause of the red or pink color of hypersaline waters (and also the source of the pigment that gives its color to f...
by Pau
Sun Oct 25, 2020 1:14 pm
Forum: Photography Through the Microscope
Topic: Mosquito biting machine
Replies: 0
Views: 96

Mosquito biting machine

This imago of Aedes aegypti female emerged from a pretty putrid pond water sample. It is an invasive specie not frequent in my area, so I didn't want to allow it flying free. 1- First I portrayed it inside a glass covered Petri dish with the Nikon AZ100, Plan Apo 1X (1.5X on sensor) IMG_0013modBR.jp...
by Pau
Sun Oct 25, 2020 1:22 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: centering springs
Replies: 6
Views: 161

Re: centering springs

I concur with Pete

Zeiss used both systems in their Standard series microscopes of which I have many components, the 3 points system in most cases works better than the 4 points one, despite the 4 points system movements seems more intuitive (orthogonal displacement)
by Pau
Sun Oct 25, 2020 1:09 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Laser aiming and focus in photomacrography
Replies: 44
Views: 41755

Re: Laser aiming and focus in photomacrography

How could this be made to work with mirrorless? In the DSLR setup the laser is focused at the mirror screen (optically at the same plane of the sensor) by the viewfinder optics. I guess that if you shine the laser on a screen placed at that position it will work, maybe also without screen but still...
by Pau
Sat Oct 24, 2020 9:37 am
Forum: Photography Through the Microscope
Topic: Art of Physics & Chemistry
Replies: 7
Views: 183

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: 44
Views: 41755

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: 1835

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: 508

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: 3093

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: 888

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: 1107

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: 396

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