-------- Original Message --------
Subject:        Re: portable imaging device
Date:   Thu, 19 Feb 2009 05:16:41 -0800 (PST)
From:   Diego Astua de Moraes <[email protected]>
To:     [email protected]
References:     <[email protected]>



Well, depth of field depends only on the size of the aperture you are
using. The more you close the diafragm, the greater will be the depth of
field. Howeve, this means it will need to remain opened longer, so might
need to have it mounted in a fized support (Copy stand, tripod)  to
avoid shaking. I work with small skulls and a good reflex with a good
macro lens has worked fine with me (a 10-12 mega pixel image of a 1 cm
skull is way biger than any computer screen we use). I have been using
the Benbo Mini trekket tripod that can be easily carried along when
visiting museums, and can be set up as a copy stand in case the museum
doesn´t have one to lend you. Feel free to contact me if you need any
specific technical detail.
Cheers
Diego


Diego Astúa de Moraes, D.Sc.
Departamento de Zoologia - CCB
Universidade Federal de Pernambuco
Av. Professor Moraes Rego, s/n.
Cidade Universitária
50670-420 Recife, PE
Fone(fax): (81) 2126-8353
email: [email protected] <mailto:[email protected]> -
[email protected] <mailto:[email protected]>


On Thu, Feb 19, 2009 at 7:35 AM, morphmet
<[email protected]
<mailto:[email protected]>> wrote:



    -------- Original Message --------
    Subject:        portable imaging device
    Date:   Wed, 18 Feb 2009 11:58:10 -0800 (PST)
    From:   Ondřej Mikula <[email protected] <mailto:[email protected]>>
    To:     [email protected] <mailto:[email protected]>



    Dear morphometricians,

    I am currently seeking for a portable imaging device able to take
    high-quality pictures of objects as small as the skull of mouse or rat.
    (I need a camera, that could be carried between museum collections.) I
have some standard reflex digital camera, but it hasn't sufficient depth
    of field. Do you have any experience with such type of device? What
    technical parameters are important for a camera to have high resolution
    as well as reasonable depth of field?

    Thank you for any advice
    Ondrej Mikula






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