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Nikon Microphot. DIC Sénarmont
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rjlittlefield
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Joined: 01 Aug 2006
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Location: Richland, Washington State, USA

PostPosted: Sun Apr 29, 2018 1:56 pm    Post subject: Reply with quote

The images in your last set are unnecessarily small also.

Did you notice this earlier reply?
Cactusdave wrote:

As far as image size is concerned you can post much larger photos on the forum than your two samples.
Quote:

First, make sure that your image dimensions are 1024 pixels or smaller, on both axes, AND that the image file length is 300 KB or smaller. Use your favorite photo editor to resize the image and set the JPEG compression quality as needed to meet those two rules.

http://www.photomacrography.net/forum/viewtopic.php?p=10#10

--Rik
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JohnyM



Joined: 24 Dec 2013
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PostPosted: Sun Apr 29, 2018 1:58 pm    Post subject: Reply with quote

Im pretty sure it's modified, but cannot tell from your photos. You have a sticker on it or your condenser?
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fpelectronica



Joined: 19 Feb 2010
Posts: 1804
Location: España

PostPosted: Sun Apr 29, 2018 2:18 pm    Post subject: Reply with quote

rjlittlefield wrote:
The images in your last set are unnecessarily small also.

Did you notice this earlier reply?
Cactusdave wrote:

As far as image size is concerned you can post much larger photos on the forum than your two samples.
Quote:

First, make sure that your image dimensions are 1024 pixels or smaller, on both axes, AND that the image file length is 300 KB or smaller. Use your favorite photo editor to resize the image and set the JPEG compression quality as needed to meet those two rules.

http://www.photomacrography.net/forum/viewtopic.php?p=10#10

--Rik


Thank you.
I am very bad at handling Photoshop. I will try to correct it
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fpelectronica



Joined: 19 Feb 2010
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Location: España

PostPosted: Sun Apr 29, 2018 2:24 pm    Post subject: Reply with quote

JohnyM wrote:
Im pretty sure it's modified, but cannot tell from your photos. You have a sticker on it or your condenser?


Yes, the condenser indicates: "ATTENTION This turret is used with modified FXA EPI FL3"
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JohnyM



Joined: 24 Dec 2013
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PostPosted: Sun Apr 29, 2018 3:08 pm    Post subject: Reply with quote

Yes, this is nice version then. It's lacking 1,25x lens in the tube. Only finite Nikon with DIC and fluorescence without empty magnification. There is phase annuli storage under the condenser, in case you've missed it. I've found after years that i have full phase and df stop set there. You have dry or oil top lens? Dry is pretty much pointless if you have no auxiliary lens which slids under polarizer, Oil lens will cover 10x + lenses only. There is tint plate slot over the polarizer.
Eaziest way to get color is to slightly decenter condenser prism and regulare color and saturation by polarizer and top prism. Care not to obscure your lens aperture.
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fpelectronica



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Location: España

PostPosted: Sun Apr 29, 2018 3:35 pm    Post subject: Reply with quote

JohnyM wrote:
Yes, this is nice version then. It's lacking 1,25x lens in the tube. Only finite Nikon with DIC and fluorescence without empty magnification. There is phase annuli storage under the condenser, in case you've missed it. I've found after years that i have full phase and df stop set there. You have dry or oil top lens? Dry is pretty much pointless if you have no auxiliary lens which slids under polarizer, Oil lens will cover 10x + lenses only. There is tint plate slot over the polarizer.
Eaziest way to get color is to slightly decenter condenser prism and regulare color and saturation by polarizer and top prism. Care not to obscure your lens aperture.


Thanks for the interesting information.
The microscope has a lever for 1.25X.
The condenser has the phase rings PH2 - PH3 - Ph4 installed.
The condenser lens is 1.4
regards
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JohnyM



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PostPosted: Sun Apr 29, 2018 3:50 pm    Post subject: Reply with quote

So you have only 2 DIC prisms?
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fpelectronica



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PostPosted: Sun Apr 29, 2018 3:50 pm    Post subject: Reply with quote

Yes, only two prisms in condenser. One indicates "DIC 0.5 - 1". The other "DIC 1 - 1.4"
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Ichthyophthirius



Joined: 07 Mar 2013
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PostPosted: Mon Apr 30, 2018 7:14 am    Post subject: Reply with quote

Hi Francisco,

I see you have the first generation CF Plan Apo 20/0.65?

This might not be the best 20 objective for this DIC system. My example of this objective has quite high strain and performs not well in DIC.

The best objectives for my Optiphot 2 DIC system are the CFN Plan 20/0.50 DIC and CFN Plan Fluor 20/0.50. The CFN Plan Apo 20/0.70 is not good either.

What does the writing on the slider for the 20 say? There could possibly be an improvement by switching from CF to CFN depending on what our de Sénarmont system was designed for (I don't have it so I can't say for sure).

Regards, Ichty
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fpelectronica



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PostPosted: Mon Apr 30, 2018 8:00 am    Post subject: Reply with quote

Ichthyophthirius wrote:
Hi Francisco,

I see you have the first generation CF Plan Apo 20/0.65?

This might not be the best 20 objective for this DIC system. My example of this objective has quite high strain and performs not well in DIC.

The best objectives for my Optiphot 2 DIC system are the CFN Plan 20/0.50 DIC and CFN Plan Fluor 20/0.50. The CFN Plan Apo 20/0.70 is not good either.

What does the writing on the slider for the 20 say? There could possibly be an improvement by switching from CF to CFN depending on what our de Sénarmont system was designed for (I don't have it so I can't say for sure).

Regards, Ichty


Thanks for the info.
The sliders are: Plan 20 - Plan 40 and Plan Apo 60 oil.
regards
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JohnyM



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PostPosted: Mon Apr 30, 2018 9:14 am    Post subject: Reply with quote

I agree. Im using PlanFluors with Plan sliders (10x, 20x) and Plan Fluor 40x dry and Oil with dedicated sliders. On CFN Apo's DIC is quite uneven.
There are only sliders for PlanApos oil (60x and 100x) which work very well.
Quote:
There could possibly be an improvement by switching from CF to CFN depending on what our de Sénarmont system was designed for

This system is last Nikon finite product, before transition to infinity system. Released along CFN Plan Fluor objectives. There were sliders available for some exotic lenses like PA60xWI, PF40xOil (got it), PF40x dry (got it).
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