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PostPosted: Thu Aug 09, 2018 7:18 pm 
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Joined: Thu Aug 09, 2018 2:14 pm
Posts: 2
Hi,

It's my first post! :)
I bought a olympus BX40 with
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Plan 20x/.40 Ph1
Plan 40x/.65 Ph2
Plan 100x/1.25 Ph3 oil

On the condenser i have a wheel with:
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20180809_125243 (Large).jpg
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O
DF
Ph1
Ph2
Ph3

Can i use do Darffield imaging? It's not working well.. Or a need a normal lens??
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PostPosted: Thu Aug 09, 2018 7:23 pm 
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Joined: Tue Feb 03, 2015 9:42 pm
Posts: 3096
Location: Cumbria, UK
Aha, I think for DF you need the top-lens of the condenser swung out (i.e. out of the light-path) and to use the x4, x10 objectives..... Keep the field-iris fully-open also.

John B.

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PostPosted: Thu Aug 09, 2018 9:50 pm 
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Joined: Mon Nov 10, 2014 10:01 pm
Posts: 2601
Ditto what M. John B. wrote....

BillT


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