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Offlinehjalmar
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Registered: 10/27/04
Posts: 295
Loc: Belgica Secunda
Last seen: 9 months, 25 days
1000X USB Digital Microscope 8 LED
    #19075860 - 11/02/13 04:11 PM (10 years, 2 months ago)

I found this listed on eBay:

http://www.ebay.com/itm/Arrival-1000X-USB-Digital-Microscope-8-LED-w-Adjustable-Stand-F-Vista-Win7-Mac-/261230158504
Quote:


Features : 
Image sensor 1.3 Mega Pixels (interpolated to 2M)
Still capture resolution 1600x1200, 1280x1024, 1280x960, 1024x768, 800x600, 640x480,352x288, 320x240, 160x120
Video capture resolution 1600x1200, 1280x1024, 1280x960, 1024x768, 800x600, 640x480,352x288, 320x240, 160x120
Snap Capture Yes
Focus Range Manual focus from 0mm to 5mm
Frame Rate Max 30f/s under 600 Lus Brightness
Magnification Ratio 1000X Based on 17" LCD Monitor
White Balance Automatic
Video format AVI
Photo format JPEG or BMP
Light source 8 LED (adjustable by control wheel)
PC interface USB2.0
Power source 5V DC from USB port





I was wondering if it will be suitable for mushroom identification purposes. I have no previous experience with it, I only know that 1000x magnification was recommended for viewing spores.


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Offlineencryptor
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Registered: 05/15/03
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Re: 1000X USB Digital Microscope 8 LED [Re: hjalmar]
    #19075913 - 11/02/13 04:21 PM (10 years, 2 months ago)

no positive, but if i were buying a microscope it would have optical zoom.


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Offlinematsc
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Re: 1000X USB Digital Microscope 8 LED [Re: encryptor]
    #19075954 - 11/02/13 04:32 PM (10 years, 2 months ago)

Yeah that 1000x is digital zoom, which means it will almost certainly be terrible. I've looked into getting a digital microscope before and while they talk a good game, cheap optics and digizoom always kills the deal.

And also that auction is a little..... shady. I see no indication whatsoever that those demonstration images actually came from the scope for sale. Also the scope doesnt actually come with the stand and rod, just the scope and mount.



I'd say save your money and avoid it.


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Offlinehjalmar
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I'm a teapot User Gallery

Registered: 10/27/04
Posts: 295
Loc: Belgica Secunda
Last seen: 9 months, 25 days
Re: 1000X USB Digital Microscope 8 LED [Re: matsc]
    #19075989 - 11/02/13 04:43 PM (10 years, 2 months ago)

Does anyone have any examples of what is a good microscope that is within  a reaonable price range?

Also, how are eg. spores measured in microns? Is there a "ruler" inside the microscope or is this done with software provided?

(I have no practical experience with microscopes yet)


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OfflineTerry M
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Registered: 06/18/10
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Re: 1000X USB Digital Microscope 8 LED [Re: hjalmar]
    #19080049 - 11/03/13 12:06 PM (10 years, 2 months ago)

If it has an optical zoom to 1000x, that highest power will be nearly useless. You need separate objectives. The one that gives you 1000x MUST be an oil immersion objective. At 1000x, we are at the limits of light microscopy. Only oil between lens and cover slip can keep things sharp.


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Offlinematsc
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Re: 1000X USB Digital Microscope 8 LED [Re: hjalmar]
    #19080900 - 11/03/13 03:25 PM (10 years, 2 months ago)

Quote:

hjalmar said:
Does anyone have any examples of what is a good microscope that is within  a reaonable price range?

Also, how are eg. spores measured in microns? Is there a "ruler" inside the microscope or is this done with software provided?

(I have no practical experience with microscopes yet)




You can find OK monocular microscopes for about 75-100$ online. They aren't great but they usually have at least a 40X objective which will show fungal spores perfectly well. For bacterial work you would really need a good 100X obj, and a higher quality scope. If you have any colleges in your town see if they have a surplus sales outlet. I have seen serviceable binocular 4 objective scopes for the 100-150$ range that way.

AmScope 40x-1000x All-Metal Student Cordless LED Field Biological Compound Microscope with All Optical Glass Lenses

or

AmScope 40X-1000X All-Metal Optical Glass Lenses Cordless LED Student Biological Compound Microscope with Coarse & Fine Focusing

Would be decent choices. Id suggest spending the extra 10$ to get the fine control, personally.

You can buy special slides which have marks of known size on them for calibrating your field of view. Sometimes the eyepiece lens will have a little ruler-like mark printed on it, which you would then line up with the slide calibrator and say "Ok the eye piece ruler is 100um in length at this scale" and then measure objects as a fraction of that. Alternatively you can train computers to do it all for you if you have a digital hook up for the scope.


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