Re: microscopy
- From: Rich <none@xxxxxxxx>
- Date: Sat, 26 Nov 2005 21:56:55 -0500
On Sat, 26 Nov 2005 10:49:08 GMT, "David J Taylor"
<david-taylor@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
wrote:
>Volvox wrote:
>> I'm looking around for a DSLR for use with a microscope.
>>
>> To cut down on vibration I would like to have a mirror lock.
>> (I will be using x20 and x40 objectives.)
>>
>> Also a remote shutter release would be an advantage.
>>
>> I have read about iso settinga, and would also think of using a high
>> value setting - say iso 1600. I understand what noise is, but can
>> find little information comparing different cameras in this respect;
>> ie which cameras are more noisy than others.
>>
>> Any suggestions as to suitable models to look at gratefully received.
>>
>> Robert
>
>You may want to ask in the Yahoo! Group:
>
> http://groups.yahoo.com/group/CoolpixPhotoMicMac/
>
>where people are already doing this sort of work. The Nikon Coolpix range
>are held in high regard in this application.
>
>David
>
Problem is the same with using telescopes, that the using a fixed-lens
camera requires (in most cases) a huge eyepiece in either the
microscope (difficult) or telescope (easier) in order to provide a
fully-illuminated field when doing "afocal" photography. With a DSLR,
the problem is easier avoid since the DSLR would be used without a
lens, using the microscope or telescope eyepiece only as the relay
element. That is called "eyepiece projection" photography. Before,
when sensors in prosumer and p&s cameras were small, their lenses were
small (front diameter) as well, meaning it was easier to get near or
full field illumination in the camera with a conventional microscope
or telescope eyepiece size. Now, with long zooms and large front
elements on prosumers, it's more difficult. The Coolpix cameras(995,
etc) like Olympus's C30xx series had relatively small front lens
elements and full field illumination was easier to achieve with
conventional eyepieces.
-Rich
.
- References:
- microscopy
- From: Volvox
- Re: microscopy
- From: David J Taylor
- microscopy
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