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Raynox DCR-150 tube assembly with flocking
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santiago



Joined: 25 Sep 2018
Posts: 37
Location: Nijmegen, The Netherlands

PostPosted: Thu Nov 01, 2018 2:50 am    Post subject: Reply with quote

Lou Jost wrote:
Yesterday swarms of colorful hummingbrids swirled around feeders a meter above my head during dinner...

That does sound like paradise Smile

Great pictures and amazing research on orchids, so many different species in such a small area! Surprised
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Lou Jost



Joined: 04 Sep 2015
Posts: 2763
Location: Ecuador

PostPosted: Thu Nov 01, 2018 2:01 pm    Post subject: Reply with quote

Yes Santiago, that is the most interesting thing, the differences between neighboring mountains are surprising. I am in a cloud forest now and have just now spent the afternoon looking for four new orchid species I had discovered several years ago, before I knew about focuss stacking. This evening I will try to make some stacks of them here in the cabin I'm staying in. They are very small flowers, 2-5mm across.

This morning I watched a bird that was only discovered 20 years ago, the Jocotoco Antpitta. The reserve I am staying at was set up for this species.
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hero



Joined: 17 Jul 2017
Posts: 42
Location: California

PostPosted: Thu Nov 08, 2018 4:29 pm    Post subject: Reply with quote

Okay so I'm having a really bad day for other reasons, so forgive me in advance if I am out of line....

I'm frustrated.

Here's what I have so far:

Mitutoyo BD Plan 10x
M40x36tpi to M52 (male or female) adapter
Raynox DCR-150
Canon EF mount camera
flocking paper

What I need at a bare minimum, as far as I'm able to tell, are:
Extension tubes
Step-up/step down rings that depend on extension tube diameter
EF mount adapter

What I may also need are:
Variable extension tube to adjust spacing between objective and tube lens
Additional adapters

My frustration comes from the fact that I don't know where to get the parts I still need. I am concerned that an M42 tube will be too narrow to provide coverage of the FF sensor, so I've been looking for something at least 48 mm diameter, preferably 52, but I can't find these. I see 2" diameter SM2 tubes on Thorlabs, but these are expensive and I am not sure about adapters for these. On top of this, I noticed yesterday that there are a lot of specks inside the BD Plan objective I bought from Robert. I don't know if it's dust or something else, and I hope it doesn't affect the image quality, but it is disturbing to me and all the more so because I can't test it out. I haven't had it long enough to think it's mold. I've barely handled it.

I also saw some 2" tubes from Astromania on Amazon, but again, no idea how these work in terms of thread pitch. I believe step-up/down ring sets might come in handy to adapt the Raynox. But other than this, I'm completely stuck and I need help. I've read through the FAQs, spent hours online searching for parts to no avail. All anyone ever seems to say is that these things are "on eBay" somewhere.
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 19325
Location: Richland, Washington State, USA

PostPosted: Thu Nov 08, 2018 10:47 pm    Post subject: Reply with quote

hero wrote:
I am concerned that an M42 tube will be too narrow to provide coverage of the FF sensor

M42 tubes will be no problem on FF if kept away from the camera, as shown in the first post in this thread.

Quote:
I've read through the FAQs, spent hours online searching for parts to no avail. All anyone ever seems to say is that these things are "on eBay" somewhere.

They're also on Amazon (as mentioned in the first post). I've annotated the list from my first post, giving current Amazon links found by searching just now. Please double-check to see that these match the specifications. Many of the parts are available from multiple listings so you have some flexibility in trading off $$ against delivery time.

Quote:
By the numbers, these parts are:

1. macro extension tube set with bayonet mount to fit camera https://www.amazon.com/Fotodiox-Canon-Extension-Extreme-Close-Ups/dp/B003Y60DZO
2. bayonet-to-M42 (42mm x 1.0mm thread) lens mount adapter https://www.amazon.com/Fotodiox-Lens-Mount-Adapter-Camera/dp/B001G4QXN2
3. M42 extension tubes (two sets) https://www.amazon.com/Fotodiox-Macro-Extension-Screw-Mount/dp/B008BBI4DA
4. M42 to 52mm adapter ring https://www.amazon.com/Female-M42-M52-Step-Up-Coupling-Adapter/dp/B07F86GX33
5. 52mm-52mm male-male reverse adapter ring https://www.amazon.com/Pixco-52mm-52mm-Coupler-Reverse-Adapter/dp/B00G0JOJK2
6. 49mm to 52mm "step up" ring (49mm male, 52mm female, used in reverse to fit the 49mm female threads on the normal front of the Raynox) https://www.amazon.com/49-52MM-Step-Up-Accessory-MagicFiber-Cleaning/dp/B00496G4KG
7. Raynox DCR-150 lens, reversed (you have this)
8. 52mm to 43mm "step down" ring (52mm male, 43mm female, used in reverse to fit the 43mm male threads on the normal rear of the Raynox) https://www.amazon.com/Fotga-Black-52mm-52mm-43mm-Filter/dp/B009T1CO0U
9. 55mm to 52mm "step down" ring with through threads, used here as a 52mm-52mm female-female reverse adapter https://www.amazon.com/Metal-Female-Coupling-Adapter-Filter/dp/B07FM3QDG7 (an actual coupler instead of step-down with through threads)
10. (optional) 52mm to M42 adapter ring (52mm male, M42 female) https://www.amazon.com/Female-M52-M42-Step-Down-Coupling-Adapter/dp/B07F8DV234
11. (optional) M42 to 52mm adapter ring (M42 male, 52mm female) https://www.amazon.com/Female-M42-M52-Step-Up-Coupling-Adapter/dp/B07F86GX33 (same as #4)
12. 52mm to objective thread adapter (52mm male, objective thread female) (you have this)

--Rik
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