Dear Tim,
Well, you could always get yourself a 4x5 camera and a Schneider 120 Makro lens, and kick the bellows out to get 5:1 to 10:1 magnification quite easily.
And the really cool thing you could then do is hook your Canon 5d up to it using a "Metaformat Stitching Back" (see: http://www.camerafusion.com/Products.html) -- can you say Gigabytes of data?
I plan on doing an in-depth review of this device in the 5th issue of MAGNAchrom magazine.
J Michael Sullivan
>-----Original Message-----
>From: Tim Corio [mailto:tcorio@xxxxxxxxxxxxxxxx]
>Sent: Saturday, March 17, 2007 08:01 PM
>To: 'List for Photo/Imaging Educators - Professionals - Students'
>Subject: Re: Rochester Resources for macro equipment
>
>I've never gotten very good results using a scanner. The main problem
>is poor contrast. Also, the lack of lighting control usually results in
>results that are not quite right.
>
>For examples of what we've done with a scanner see
>http://www.the-rna.com/medals.php. Click on each medal to see a larger
>image.
>
>For imageing the entire coin I'm using a Canon 5D with a Canon EF 100mm
>F2.8 Macro USM lens. This gives great results for 1x magnification. I
>also want to capture small details on a coin. I'll need between 4x and
>10x magnification to capture features about the size of the date on a
>coin. And between 20x and 40x to capture the detail of a small letter
>on a coin. For example, the words "In God We Trust" on a dime.
>
>Thanks,
>Tim
>
>On Sat, 2007-03-17 at 20:22 +0000, editor@xxxxxxxxxxxxxx wrote:
>> This may not be your cup of tea, but flatbed scanners do a fabulous
>> job with scanning coins and other flat objects.
>>
>> Consider this: at 1200dpi you would be able to enlarge it 400% @
>> 300dpi
>> And at 2400dpi, you would be able to enlarge it 800% @ 300dpi
>>
>> You should be aware that the light in the scanner will "light" your
>> subject at approx a 45 deg angle to the plane of focus so you will
>> have to learn which direction the scanner light "falls" on your
>> subject. At the very least, you might want to give it a try. YMMV.
>>
>> Cheers
>> J Michael Sullivan
>>
>>
>>
>>
>>
>> >-----Original Message-----
>> >From: Tim Corio [mailto:tcorio@xxxxxxxxxxxxxxxx]
>> >Sent: Saturday, March 17, 2007 05:38 PM
>> >To: 'List for Photo/Imaging Educators - Professionals - Students'
>> >Subject: Rochester Resources for macro equipment
>> >
>> >Is there a good source in the Rochester, NY area for good used
>> >photogrpahy/microscopy equipment? Hopefully a place where I can also
>> >get some selection advice.
>> >
>> >I'm photographing coins using a standard macro lens (Canon EF 100mm
>> F2.8
>> >Macro USM) on a Canon 5D body. This is working great for 1x
>> >magnifications. I also want to get magnifications from about 4x to
>> 40x.
>> >I've decided the most flexable way to accomplish this is to mount a
>> >microscope objective on a bellows.
>> >
>> >All the equipment I need is available online. But, since this is all
>> >new to me I would preffer to handle and inspect the pieces and
>> >hopefully get some advice before I buy.
>> >
>> >Is there a source in the Rochester, NY area for used equipment? The
>> >things I'll be needing are microscope objectives, a t-mount to RMS
>> >(microsope abjective lens mount) adapter, bellows, and possibly
>> t-mount
>> >extension tubes.
>> >
>> >I'm in the middle of a project photographing the collection of the
>> >Rochester Numismatic Association (RNA). Our web site is at
>> >http://www.the-rna.com.
>> >
>> >Thanks,
>> >Tim Corio
>> >
>> >
>
>
