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Microscope suggestions

 
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tevans9129



Joined: 30 Nov 2017
Posts: 123
Location: TN

PostPosted: Sat Feb 10, 2018 10:52 am    Post subject: Microscope suggestions Reply with quote

I am entertaining the idea of a microscope for the purpose of inspecting/cleaning subjects and for cleaning camera sensors. Knowing absolutely nothing about microscopes, I would appreciate your comments and suggestions. The one at,

https://www.amazon.com/dp/B0055AHWWY/ref=nav_timeline_asin?_encoding=UTF8&psc=1

seems to be appropriate but is at the extreme price point for me. Is there a better option for less money or even a better option for the same money?
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zzffnn



Joined: 22 May 2014
Posts: 1616
Location: Texas USA

PostPosted: Sat Feb 10, 2018 11:17 am    Post subject: Reply with quote

For that much, I would suggest a used Bausch & Lomb StereoZoom 7, from a reputable dealer. On boom stand (more expensive) or regular stand; it would be up to you. Add 0.5x and/or 2x ancillary objectives, depending on your need. I like mine a lot. That rig provides total useful magnification from 5x up to 210x visually (15x eyepieces with zoom objective set to max at 7x + ancillary 2x objective), or about 0.5x to 21x on-sensor (depending on camera lens set-up).

If you want even higher magnification or higher resolution/larger aperture for focus stacking, then you want a compound toolmaker's /measuring scope. I have a partial one for $150 shipped within USA, but it is not complete (please see my thread in Equipment Exchange). I can sell you my own parts to make it complete, but you are much better off waiting on eBay for better deals on those missing parts.
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tevans9129



Joined: 30 Nov 2017
Posts: 123
Location: TN

PostPosted: Sun Feb 11, 2018 4:28 pm    Post subject: Reply with quote

zzffnn wrote:
For that much, I would suggest a used Bausch & Lomb StereoZoom 7, from a reputable dealer. On boom stand (more expensive) or regular stand; it would be up to you. Add 0.5x and/or 2x ancillary objectives, depending on your need. I like mine a lot. That rig provides total useful magnification from 5x up to 210x visually (15x eyepieces with zoom objective set to max at 7x + ancillary 2x objective), or about 0.5x to 21x on-sensor (depending on camera lens set-up).

If you want even higher magnification or higher resolution/larger aperture for focus stacking, then you want a compound toolmaker's /measuring scope. I have a partial one for $150 shipped within USA, but it is not complete (please see my thread in Equipment Exchange). I can sell you my own parts to make it complete, but you are much better off waiting on eBay for better deals on those missing parts.


Thanks for the suggestions ZZ. I only want a microscope for checking and cleaning subjects making them ready to photograph and, for cleaning my camera sensors. Therefore, I cannot see any need beyond the 45x of the ones that I have looked at. I am watching ebay in case something comes up there.
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zzffnn



Joined: 22 May 2014
Posts: 1616
Location: Texas USA

PostPosted: Sun Feb 11, 2018 4:41 pm    Post subject: Reply with quote

Bausch & Lomb StereoZoom 4 is a bit cheaper and should fit your needs then.
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phil m



Joined: 10 Aug 2014
Posts: 148

PostPosted: Thu Feb 15, 2018 7:53 am    Post subject: Reply with quote

Actually, any of the older microscopes from either Bausch & Lomb or American Optical would do fine. Care does need to be excercised in their selection because one of their principle uses was in the semi-conductor industry, so some may have been exposed to flux vapor. All of them should have had a protective window over the front optics but many didn't , so they could sustained some surface corrosion on the exposed optical surfaces. A lot were sold, so there are many good ones.

Just make sure that the instrument has been tested and the seller verifies it's function. If they do that, then you are safe. Nowadays, ebay does support buyers. Sellers can't even override ebay's buyer protection guarantees, in their listings, with such phrases as " buyer pays return shipping". the seller pays return shipping, if there is a problem.

A Cycloptic , AO Stereostar 580, 569, Stereozoom 4, or 7 are all excellent and often way cheaper than they should be. The Cycloptic is an apochromat but has a narrower f.o.v. ( about 19mm) than the later zooms, which can be up to a 25mm apparent field.
There are UWF 15X eyepieces around that work perfectly on the Stereozooms and Stereostars that are about 25mm apparent field and give stunning fields of view. Those eyepieces were originally for military use in aerial surveillance microscopes but at 2000.00/pr. had little market otherwise. I have seen them sell for 75.00 ea. recently. They were made by Bausch & Lomb but FJW Industries also had them branded for their product line and later they were branded Reichert and even Leica.
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tevans9129



Joined: 30 Nov 2017
Posts: 123
Location: TN

PostPosted: Wed Feb 21, 2018 3:31 pm    Post subject: Reply with quote

Many thanks to those who offered suggestions and information. My decision was to go with a new one that I could afford and for the following reasons. My ignorance of microscopes and with no experience, in the event something was wrong or became a problem. For my purpose, I wanted one with extended work distance with a highly adjustable stand. It was purchased from Amazon so have 30 days right of return if it proves to be unsatisfactory and a three-year warranty which offers some peace of mind.

This is the unit that best addresses my purpose within limited funds. AmScope SM-4TX-144A



What I am satisfied with, keeping in mind that I have no experience with microscopes.

1. the FOV and DOF both surpass my expectation, I assumed it would be much less.

2. The quality of the image, it is much better than what I have been able to get with a camera at 3x and above.

3. The working distance and easy access to the subject.

4. The versatility of the stand.

5. The adjustable LED light has proven to be beneficial.

6. The scope controls seem to be quite smooth but then I have nothing to compare it with.

7. It seems to remain in focus as the power is altered.

Things that could be improved but then cost comes into play.

1. Although everything works well with the stand it is not one of high precision.

2. The finish on the chrome plating is quite rough in places although it does not seem to adversely impact functionality.

3. It came with rubber eyecups for glasses, the regular eyecups should be provided or at least an option.

Perhaps it will prove to be wanting at some point in the future but for now, I am very please with the unit.
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