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 Replies: 59 / Views: 15,750 |
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Pillar of the Community
 United States
4038 Posts |
If you bought the Tominon, did you also buy an adapter? The Tominon series developed for the Polaroid macro system mounts to M40 threads, not M39 or M42, so you will need an appropriate adapter. This is the only one I have found that has the right threading: http://www.ebay.com/itm/Mitutoyo-BD...em2eb5de63e7plus, it's from jinfinance who is a well-respected supplier of lens adapters. |
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New Member
 United States
43 Posts |
Ray, I did buy that exact adapter. It's the only source for that particular size combination I could find anywhere without having it custom made at a machine shop. I was very glad you had mentioned the the thread size in your review of the two lenses.
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Pillar of the Community
United States
4038 Posts |
If you go with the newer Vivitar (from bellows system) there is an optional focus rail available that works reasonably well. It won't give you fine enough control for higher mag focus stacking (only a microscope stand will do this) but for most other uses it works fine.
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New Member
United States
43 Posts |
The FedEx guy knocked on my door today. My Bogen copy stand arrived. I'm so excited!! I set it up and I'm pretty happy with it. Sure beats trying to use my tripod. I did have to make a few MacGyver adjustments to it. I had to go get a couple rubber washers and a replacement steal washer to hold the mounting arm in place. There was a bit of slack in the connection point to the column, it was out of square with the weight of the camera, bellows and lens mounted to it. I also had to get some .4mm x .25in brass to make a shim where the bellows connects to the mounting arm. I now have it perfectly squared using the mirror trick.
Next project, making mini soft boxes for my Jansjo's. I have an old photo umbrella that I just retired. It's one of the types with the translucent fabric that you can shoot through. I'll post some pics of the setup once I get it finished.
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New Member
United States
43 Posts |
Well, I found a cool way to make a diffuser for the Jansjo's last night. The top to a square half dollar tube fits perfectly snug over the end of a Jansjo. So I cut out a circle of diffusion material from my old photo umbrella and put it in the cap and then attached it to the Jansjo. Here are a couple of photo's.   |
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Pillar of the Community
United States
4038 Posts |
Looks good!
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Pillar of the Community
United States
1298 Posts |
jtlee321, I have been looking for a copy stand to photo PCGS slabs. I have a Vivitar bellows/75mm lens and Canon t1i camera. My microscope setup just won't allow full PCGS slab images. Are you happy with your Bogen stand mentioned above? I am looking at one on ebay. It's new with no lights. Link to the stand below. http://www.ebay.com/itm/Bogen-FF-11...AOSwo0JWIGOr |
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New Member
United States
43 Posts |
Hey Ham, That's actually my ebay listing. It's a second stand that I was able to buy from the original source where I bought mine, they had a total of two in inventory. I like it quite a lot. My only concern with it is the arm that mounts the camera to the column. It has a little too much slack and causes the camera sensor to not be parallel to the surface of the table. I bought a couple of rubber washers and a new steel washer which helps a lot. I also bought this http://www.ebay.com/itm/20137750603...RK:MEBIDX:IT Which brings everything perfectly parallel. If your interested we can probably work out a deal on the stand through here. Just email me. Edited by jtlee321
10/28/2015 04:55 am
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Pillar of the Community
United States
1298 Posts |
jtlee321, tried to send an email, but received note " this member does not wish to receive email". You can email me and we can discuss details. Thanks, Hamm
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New Member
United States
43 Posts |
@Ham1947. I tried to email you as well. For some reason, I am getting an error stating that I am a new member and cannot email you. My accept email from other members was turned off by default. I have fixed it. So feel free to email me through the forum system or I can give you my email here.. justin@justinleephoto.com
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Pillar of the Community
Canada
2784 Posts |
jtlee321 hello I have a Sony a7r mark II. this camera is very new to me. I only started last spring using a canon t5. I got pretty good with it. the Sony camera requires a lot less light. I saw where you explained about light on a coin and how it acts. I was wondering can you tell me how to get less light coming in on my photos. so I don't have to do so much darkening. this would help me with shooting silver that is pristine. thank you any help greatly apreciated
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New Member
United States
43 Posts |
Rocky, I replied to your Sony a7r mark ii with suggestions.
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Valued Member
United States
430 Posts |
I hate hijacking this thread. but there are a bunch of smile director threads already.
Ray in Oct you wrote about the smile directors:
The cone is for 3 purposes:
- support the diffuser
- block light from the Jansjos from shining back up to the lens
- vignette the coin such that no extraneous light shines up from the areas around the coin
where can you get one of these "cones". Is it cardboard? and what is your diffuser material?
Wizzy1
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Valued Member
United States
430 Posts |
Sorry went through topic too fast. on a reread I found:
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Only the bottom part is made of diffuser paper. The cone is a section of an industrial thread spool. It is heavy cardboard. For the example shown above, the cone is cut such that it can be glued in place on the objective side of a 40.5mm filter after the filter glass is removed. This gives a convenient threaded mount that screws onto the lens."
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Pillar of the Community
United States
9395 Posts |
Quote:
where can you get one of these "cones". Is it cardboard? and what is your diffuser material? You can get almost the same effect by just using threaded extension tubes attached to the front of the lens, with stepdown rings attached at the coin end. You can vary the overall length by varying the number and length of extension tubes. You can adjust the opening at bottom (to match the coin size) by using different sizes of stepdown rings. I suppose the conical shape is ideal for lighting, but the extension tubes and rings seem to work acceptably. |
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Replies: 59 / Views: 15,750 |
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Posted 10/12/2015 10:32 pm
