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 | | From: | bob marable | | Subject: | Canon EOS Digital Rebel for photomicrography--comments?? | | Date: | 5 Dec 2004 17:14:13 -0800 |
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 | I'm a hobbiest (read: "very little money, less experience"), and I'm
considering a Canon Digital Rebel for photography through my
microscope. My interests are very general, although I most frequently
photgraph various crystal formations with polarized light, and
micro-life specimens (read "pondwater"). I primarily use a Zeiss
Axiostar trinoc, but also have stereo and inverted scopes.
Generally, I would like a camera that can be easily moved from one
scope to another, does NOT require connection to a PC, and has enough
resolution to make 11x14 prints (I occaisionally make wall-hangers
from my photos). I've done some 35mm film work, and just sold my Nikon
Coolpix 4500.
Any comments/suggestions on using a Digital Rebel on a microscope??
Any comments/suggestions for other alternatives??
All input will be greatly appreciated!!
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| | From: | Richard J Kinch | | Subject: | Re: Canon EOS Digital Rebel for photomicrography--comments?? | | Date: | Sun, 05 Dec 2004 23:03:39 -0600 |
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| bob marable writes:
> Any comments/suggestions on using a Digital Rebel on a microscope??
I have made several custom adapters for users of EOS cameras
(http://www.truetex.com/micad.htm).
Afocal photography typically suffers from severe vignetting due to the very
different optical characteristics of this camera's lenses from the human
eye. It all depends on the microscope.
Direct projection onto to imaging chip results in vignetting due to the
chip being smaller than a 35mm frame. This may not be a problem if you
have a suitable lower magnification to compensate.
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| | From: | GTO | | Subject: | Re: Canon EOS Digital Rebel for photomicrography--comments?? | | Date: | Mon, 06 Dec 2004 08:11:48 GMT |
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| A couple of weeks ago, I just started the same project with my newly
acquired DSLR. First results look very promising.
Do you have already a 300D? If yes, you may want to give it a try using an
adapter from Diagnostic Instruments on a ISO 38mm photoport. You definitely
have to use the correct projection lens for your scope and the size of your
image sensor. Does the Zeiss optics still require compensating oculars?
The vibration due to mirror slap and shutter can be avoided using the bulb
setting, remote cable, and something to block the light. If your 300D does
not support a manual mode with a bulb setting, you will have serious
limitations. Vibrations with DSLRs are the enemy number one!
I use a Nikon D70 with IR remote. Works fine. I have no vibrations from
mirror slap and shutter curtain since I am using an external shutter with
timer mounted on top of my Koehler light source (just below the condenser).
(But sometimes, I am also using a simple business card to block the light.)
I am currently testing the best relay lens for my scope to fully extract the
potential of the large CCD of the D70.
Good luck,
Gregor
"bob marable" wrote in message
news:d1825ad6.0412051714.56bf0561@posting.google.com...
> I'm a hobbiest (read: "very little money, less experience"), and I'm
> considering a Canon Digital Rebel for photography through my
> microscope. My interests are very general, although I most frequently
> photgraph various crystal formations with polarized light, and
> micro-life specimens (read "pondwater"). I primarily use a Zeiss
> Axiostar trinoc, but also have stereo and inverted scopes.
> Generally, I would like a camera that can be easily moved from one
> scope to another, does NOT require connection to a PC, and has enough
> resolution to make 11x14 prints (I occaisionally make wall-hangers
> from my photos). I've done some 35mm film work, and just sold my Nikon
> Coolpix 4500.
> Any comments/suggestions on using a Digital Rebel on a microscope??
> Any comments/suggestions for other alternatives??
> All input will be greatly appreciated!!
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| | From: | bobmarable at earthlink.net | | Subject: | Re: Canon EOS Digital Rebel for photomicrography--comments?? | | Date: | 12 Dec 2004 19:31:53 -0800 |
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GTO wrote:
> A couple of weeks ago, I just started the same project with my newly
> acquired DSLR. First results look very promising.
>
> Do you have already a 300D? If yes, you may want to give it a try
using an
> adapter from Diagnostic Instruments on a ISO 38mm photoport. You
definitely
> have to use the correct projection lens for your scope and the size
of your
> image sensor. Does the Zeiss optics still require compensating
oculars?
>
> The vibration due to mirror slap and shutter can be avoided using the
bulb
> setting, remote cable, and something to block the light. If your 300D
does
> not support a manual mode with a bulb setting, you will have serious
> limitations. Vibrations with DSLRs are the enemy number one!
>
> I use a Nikon D70 with IR remote. Works fine. I have no vibrations
from
> mirror slap and shutter curtain since I am using an external shutter
with
> timer mounted on top of my Koehler light source (just below the
condenser).
> (But sometimes, I am also using a simple business card to block the
light.)
> I am currently testing the best relay lens for my scope to fully
extract the
> potential of the large CCD of the D70.
>
> Good luck,
>
> Gregor
>
>
> "bob marable" wrote in message
> news:d1825ad6.0412051714.56bf0561@posting.google.com...
> > I'm a hobbiest (read: "very little money, less experience"), and
I'm
> > considering a Canon Digital Rebel for photography through my
> > microscope. My interests are very general, although I most
frequently
> > photgraph various crystal formations with polarized light, and
> > micro-life specimens (read "pondwater"). I primarily use a Zeiss
> > Axiostar trinoc, but also have stereo and inverted scopes.
> > Generally, I would like a camera that can be easily moved from one
> > scope to another, does NOT require connection to a PC, and has
enough
> > resolution to make 11x14 prints (I occaisionally make wall-hangers
> > from my photos). I've done some 35mm film work, and just sold my
Nikon
> > Coolpix 4500.
> > Any comments/suggestions on using a Digital Rebel on a microscope??
> > Any comments/suggestions for other alternatives??
> > All input will be greatly appreciated!!
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