Search found 4592 matches

by Lou Jost
Wed Oct 28, 2020 6:48 am
Forum: Photography Through the Microscope
Topic: Porcupine quill
Replies: 8
Views: 160

Re: Porcupine quill

That's much better!
by Lou Jost
Tue Oct 27, 2020 2:49 pm
Forum: Photography Through the Microscope
Topic: Porcupine quill
Replies: 8
Views: 160

Re: Porcupine quill

I am puzzled, the scale seems way off if this is the cross section of a porcupine quill. It would appear from your magnification of 100x that this quill is about the diameter of a large diatom. Yet quills are much thicker than that. What is going on?
by Lou Jost
Tue Oct 27, 2020 9:10 am
Forum: Equipment Discussions
Topic: Looking for a compact, rugged camera
Replies: 6
Views: 223

Re: Looking for a compact, rugged camera

In addition to Chris' question, we also need to know what you want to do with it besides macro.

We give our reserve rangers Panasonic bridge cameras with a Raynox lens. Good macro and excellent for birds and mammals (600mm equivalent lens). Not good in low light though.
by Lou Jost
Tue Oct 27, 2020 4:50 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: 1st attempting at modifying a condenser
Replies: 3
Views: 146

Re: 1st attempting at modifying a condenser

I'm gradually working through it.
And we are all learning a lot in the process.
by Lou Jost
Mon Oct 26, 2020 6:01 pm
Forum: Equipment Discussions
Topic: MJKZZ Extreme system and ...
Replies: 34
Views: 644

Re: MJKZZ Extreme system and ...

It appears that the entire camera/lens assembly is "resting" on the microscope bracket. That's right. Super-easy, fast to change lenses, but perfectly sturdy. Sometimes I use rings that go through the hole in the stage support and can be locked down from above and below, making a very rigid assembl...
by Lou Jost
Mon Oct 26, 2020 1:48 pm
Forum: Equipment Discussions
Topic: MJKZZ Extreme system and ...
Replies: 34
Views: 644

Re: MJKZZ Extreme system and ...

I move the subject manually or with a small micrometer-driven xy stage, or I put a modified x-y stage on the microscope block.

_1160346.jpg
I made a hole in the stage so a microscope objective fits through it.
by Lou Jost
Mon Oct 26, 2020 1:07 pm
Forum: Equipment Discussions
Topic: MJKZZ Extreme system and ...
Replies: 34
Views: 644

Re: MJKZZ Extreme system and ...

_1160765.jpg _1160762.jpg This is a little odd, I've fastened the block to a UM2 column as a counterweight. But there are other do-it-yourself options. For example, I could have drilled holes in the marble vertical plates and fastened the microscope block to that. Or I could have gotten a whole mic...
by Lou Jost
Mon Oct 26, 2020 11:05 am
Forum: Equipment Discussions
Topic: Use of 3D-printer in close-up photography
Replies: 9
Views: 279

Re: Use of 3D-printer in close-up photography

Very clever and efficient! Congratulations.
by Lou Jost
Mon Oct 26, 2020 8:32 am
Forum: Equipment Discussions
Topic: MJKZZ Extreme system and ...
Replies: 34
Views: 644

Re: MJKZZ Extreme system and ...

I use Nikon blocks with nested focusing and fine-focusing knobs. The ones with just a single knob will not work well. The good ones are regularly available on ebay. I use it to move my camera whose lens rests on the round stage mount that goes with these blocks. Or I can use it to move the subject, ...
by Lou Jost
Mon Oct 26, 2020 5:47 am
Forum: Equipment Discussions
Topic: MJKZZ Extreme system and ...
Replies: 34
Views: 644

Re: MJKZZ Extreme system and ...

There is an economical alternative that is excellent: the WeMacro MicroMate plus a good used microscope ( or jsut the focusing block) with fine focus ability. I use this almost exclusively now. It is far more stable and with much finer steps than WeMacro or Cognisys rails (I don't know anything abou...
by Lou Jost
Sun Oct 25, 2020 7:22 am
Forum: Photography Through the Microscope
Topic: Circular Diatom
Replies: 1
Views: 81

Re: Circular Diatom

Absolutely beautiful.
by Lou Jost
Sat Oct 24, 2020 12:40 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: 1st attempting at modifying a condenser
Replies: 3
Views: 146

Re: 1st attempting at modifying a condenser

This is a fascinating project. Congratulations for crossing the condenser hurdle.
by Lou Jost
Fri Oct 23, 2020 4:28 pm
Forum: Equipment Discussions
Topic: Out, out ##### spots!
Replies: 13
Views: 291

Re: Out, out ##### spots!

I took several shots of the white card with the tube lens alone using the common technique for finding spots and I see absolutely nothing. This is NOT an adequate test for sensor dirt. Sensor dirt visibility depends strongly on the aperture of the lens. When using a high-mag objective, the system i...
by Lou Jost
Wed Oct 21, 2020 7:07 am
Forum: Equipment Discussions
Topic: Micro-Symmar 3.5x
Replies: 32
Views: 1278

Re: Micro-Symmar 3.5x

Robert, as you know, that is generally true of any lens, a narrow bandpass filter will reduce CA, and completely eliminate it if the bandwidth is narrow enough. But that makes the lens useless for color photogrpahy. Surely SK would have mentioned a restricted wavelength in the specs of the lMicro-Sy...
by Lou Jost
Mon Oct 19, 2020 6:15 pm
Forum: Equipment Discussions
Topic: Canon DSLR discounts
Replies: 9
Views: 525

Re: Canon DSLR discounts

I strongly second the move to mirrorless. No vibration, excellent live view, and no wear and tear. This week I took a hundred thousand pictures; if I had been using a DSLR, at this rate I would soon wear it out. Best of all, you can re-use all your old glass except the newer focus-by-wire and electr...