www.photomacrography.net :: View topic - 100X objective tests
www.photomacrography.net Forum Index
An online community dedicated to the practices of photomacrography, close-up and macro photography, and photomicrography.
Photomacrography Front Page Amateurmicrography Front Page
Old Forums/Galleries
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
100X objective tests

 
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Photography Through the Microscope
View previous topic :: View next topic  
Author Message
Olympusman



Joined: 15 Jan 2012
Posts: 4405
PostPosted: Sat Jan 05, 2019 7:28 pm    Post subject: 100X objective tests Reply with quote
Testing 100X objectives on a metallurgical scope.

First a baseline 40X stack



100X dry objective



And the big surprise - 100X oil objective


_________________
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA
Back to top
View user's profile Send private message
rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 20494
Location: Richland, Washington State, USA
PostPosted: Sat Jan 05, 2019 7:38 pm    Post subject: Reply with quote
Is the oil objective used dry here?

--Rik
Back to top
View user's profile Send private message Visit poster's website
Lou Jost



Joined: 04 Sep 2015
Posts: 4120
Location: Ecuador
PostPosted: Sat Jan 05, 2019 8:00 pm    Post subject: Reply with quote
Can you be more specific about which objectives/tube lenses you are testing? Thanks.
_________________
Lou Jost
www.ecomingafoundation.wordpress.com
www.loujost.com
Back to top
View user's profile Send private message Visit poster's website
Olympusman



Joined: 15 Jan 2012
Posts: 4405
PostPosted: Mon Jan 07, 2019 10:21 am    Post subject: Objective test Reply with quote
I should have put the specs of the objectives in the original post, which I will do from now on. The objectives are:

NIKON MPlan 40 0.65 210/0

The dry 100x objective may have come with an Amscope kit.

100/1.25
160/0.17

The 100X oil is a SWIFT objective that I have previously tested against my other oil objectives in transmitted light microscopy. This was the first time I tried it on a metallurgical scope with immersion oil and am very impressed by its performance.

SWIFT S-MICRO
100 1.25 Oil
160/0.17
_________________
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA
Back to top
View user's profile Send private message
Pau
Site Admin


Joined: 20 Jan 2010
Posts: 4959
Location: Valencia, Spain
PostPosted: Mon Jan 07, 2019 10:47 am    Post subject: Reply with quote
Quote:
The dry 100x objective may have come with an Amscope kit.
100/1.25
160/0.17

NA 1.25 is an oil immersion objective for sure. The maximum NA attainable in air is 0.95 (and with water immersion 1.2, I think).
Not surprising the bad results without oil
_________________
Pau
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Photography Through the Microscope All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group