[Rockhounds] USB microscopes

[Jim Daly]

An overhead projector with digital output also works. The depth of field is probably a little better than a scanner. We have one in the classroom where our Mineralogy/Micromount study group meets, and we have used it to display micros on the screen in real time without having to take a photo through a scope and then project it.
Jim

--- On Tue, 9/16/08, VevaBailey at aol.com <VevaBailey at aol.com> wrote:

From: VevaBailey at aol.com <VevaBailey at aol.com>
Subject: Re: [Rockhounds] USB microscopes
To: rockhounds at lists.drizzle.com
Date: Tuesday, September 16, 2008, 1:52 PM

 
Try it!! It works! I have used it for taking pictures of earrings,  pendants, 
bracelets, etc.
The newer scanners with lift up the lid to 6 inches. I have done this to  
copy items from text books.
And, I use my newer scanner to make prints from large black and white  
negatives and well as colored negatives. 
Since I have over 1000 negatives this is cheaper than trying to get a shop  
to it.
 
Veva
 
 
 
 
 
 
In a message dated 9/16/2008 1:42:26 P.M. Pacific Daylight Time,  
codeburner at gmail.com writes:

The  specimen would have to be fairly small as the depth of field on scanners
is  only a centimeter or two. I don't know why that would be better than  a
camera and macro lens unless you have a scanner and no camera of course.  the
lighting on a scanner would be 'flat' to say the  least.

BK

On Tue, Sep 16, 2008 at 16:30, Mark Severns  <marksev at cox.net> wrote:

> Greetings everyone,
> I have  not practiced it to date but i hear that scanner images work out
> well  for smaller rocks and minerals and jewelry. Maybe a member can share
>  their successes and any challanges in using a scanner for images.
> Mark  in Arizona
>
> ----- Original Message ----- From: "Lawrence Rush"  <
> larryrush at worldnet.att.net>
> To:  "Rockhounds at drizzle.com: A mailing list for rock and gem
collectors"  <
> rockhounds at lists.drizzle.com>
> Sent: Tuesday, September  16, 2008 12:57 PM
> Subject: [Rockhounds] USB  microscopes
>
>
>  We have probably all seen the  microscopes that plug into a PC via a USB
>> port that are now used  for medical and dental purposes. They can do a

video
>> (avi) or a  still (gif/bmp) format. Has any one tried one of these for
>>  capturing micro-mount pictures? They are advertised as able to go up
to  
200X
>> for as little as $100. If it works, it could simplify the  digital
camera
>> technical and expertise problems by eliminating the  camera altogether
for
>> close-up work.
>>
>> Larry  Rush
>> --
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--  


"The thunderbolt falls on an inch of ground; but the light of it  fills
the
horizon."

Ralph Waldo Emerson

J Bryan  Krämer
North Florida, USA
photos  at:
http://pbase.com/photoburner


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