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Help me spend money on a 20X objective and camera mount!
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ChrisR
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Joined: 14 Mar 2009
Posts: 7251
Location: Near London, UK

PostPosted: Thu Dec 01, 2016 4:06 pm    Post subject: Reply with quote

Examples - which may or may not be exactly right for you but will give you the idea - ebay items
140547138653
361588910294


A Raynox on tubes,
http://www.photomacrography.net/forum/viewtopic.php?p=143195#143195
but
start withyour 180 to see what happens, and
don't use a conical objective adapter. Flat ones are easier/better usually.
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Chris S.
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Joined: 05 Apr 2009
Posts: 2847
Location: Ohio, USA

PostPosted: Sat Dec 03, 2016 12:27 am    Post subject: Technical and Studio Photography -- Macro and Close-up Reply with quote

Donkom,

I hope you won't mind that I moved your thread from the beginners' micro forum, where it probably didn't belong, to Technical and Studio Photography, where it appeares to fit much better.You sir, do not seem to be a beginner,

With respect,

Chris S.
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ChrisR
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Joined: 14 Mar 2009
Posts: 7251
Location: Near London, UK

PostPosted: Sat Dec 03, 2016 4:36 am    Post subject: Reply with quote

The ojective adapter I linked to, is one which should take a Mitty .
The thread is 26 x 36tpi as listed as I said, in the FAQs
FAQ: Threads we use
Which is http://www.photomacrography.net/forum/viewtopic.php?t=11710 this one.

You can use a reversed filter cap to hold a ringflash, with tubes.
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ChrisR
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Joined: 14 Mar 2009
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Location: Near London, UK

PostPosted: Sat Dec 03, 2016 4:46 am    Post subject: Reply with quote

I thought that might need a doodle. I use Word which is crude but quick; I hope it conveys what I mean.

You can stick the filter cap or M42 cap (yellow)flat back part with double sided tape, but I was lucky and found mine was only about 0.2mm thick, so I made the hole small enough for the objective to hold it and leave enough thread to screw into the adapter (blue).

I use a 52mm Nikon K tube - but Chinese copies have started to appear on ebay.

(There are digiscoping adapters which will grip a Mitty, but they're a bit long)


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donkom



Joined: 15 Nov 2016
Posts: 8
Location: Ontario, Canada

PostPosted: Sat Dec 03, 2016 9:16 am    Post subject: Reply with quote

Thanks very much for all the feedback, Chris.

I'm totally a beginner when it comes to microscope objectives, though my background knowledge in the general topic has some substance. Wherever the post should belong, I'm glad it's there. Smile

I've got all the parts I need, I think, to make a suitable camera mounted objective. This includes winning an eBay auction for the Mitutoyo 20X APO for $700 for which I was pretty excited about.

For holding the ring flash, I purchased a Canon MLA-DC1 Macrolite Adapter, which is designed for the G1X but fits exactly what I need. It has the proper clip for the ring flash, attached to a smaller tube. Depending on how it all comes together I may need to cut it's height down, and glue/weld it to the thread adapter that the objective screws into. It should give me the light that I'm after - but I'll only know once I put all the parts together.

Looking forward to this as a winter project!
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ChrisR
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Joined: 14 Mar 2009
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Location: Near London, UK

PostPosted: Sat Dec 03, 2016 10:47 am    Post subject: Reply with quote

You're welcome. Be ready to diffuse the light more than you expect, when you're at 20x Smile.
We look forward to the results, for sure.
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Sumguy01



Joined: 28 Jan 2013
Posts: 902
Location: Ketchikan Alaska USA

PostPosted: Sat Dec 03, 2016 9:21 pm    Post subject: Reply with quote

Very Happy Hi Don.
Welcome to the group.
I have your poster from last year.
Keep up the great work.
Thanks for sharing these nice pics.
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donkom



Joined: 15 Nov 2016
Posts: 8
Location: Ontario, Canada

PostPosted: Sun Dec 04, 2016 7:43 pm    Post subject: Reply with quote

Thanks for the welcome, Sumguy01!

My snowflake poster was a huge undertaking, and I'm glad you enjoy and appreciate my efforts. I have some ideas to take it further with a limited edition 8x10 "1:1 lifesize" print using contact prints from laser-engrave negatives for insane resolution... just need to find the time to explore the idea. Smile

ChrisR, with snowflakes I find that somewhat of a direct light is useful to create "glare", so long as the light can actually hit the subject! At this working distance that might be a bit of a challenge... I'll have to test the waters!
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