Nikon 20x LWD

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jnh
Posts: 136
Joined: Mon Apr 27, 2015 7:34 am
Location: US East Coast

Nikon 20x LWD

Post by jnh »

Nikon LWD 20X/0.40 infinity/1.2, Ph1 ADL, WD 3.0 Microscope Objective.
In excellent condition. $175
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rjlittlefield
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Re: Nikon 20x LWD

Post by rjlittlefield »

Just to avoid possible confusion among our less experienced members, who are often looking for good and inexpensive 20X objectives...

The objective offered here is highly specialized: phase contrast and designed to look through 1.2 mm of cover glass.

It is not suitable for use as an "extreme macro" objective with normal un-covered subjects.

--Rik

Pau
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Re: Nikon 20x LWD

Post by Pau »

rjlittlefield wrote:
Thu Nov 12, 2020 9:42 pm
..
The objective offered here is highly specialized: phase contrast and designed to look through 1.2 mm of cover glass.

It is not suitable for use as an "extreme macro" objective with normal un-covered subjects
Its typical use is with inverted microscopes to view through the bottom of a Petri dish or through the thick glass of a microscope slide.
It seems very interesting at that price but only for this kind of application.

very interesting being ADL (Apodized Dark Low) -see https://www.microscopyu.com/microscopy- ... objectives
Pau

jnh
Posts: 136
Joined: Mon Apr 27, 2015 7:34 am
Location: US East Coast

Re: Nikon 20x LWD

Post by jnh »

That is indeed the case. Thanks for pointing that out.

Macro_Cosmos
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Joined: Mon Jan 15, 2018 9:23 pm
Location: Sydney

Re: Nikon 20x LWD

Post by Macro_Cosmos »

I have an Olympus 10x, similar application objective for sale in my ebay store. It's designed for inverted microscopes and works well with relief phase contrast (similar to phase contrast). It is designed to shoot through a 1mm medium, which usually is a petri dish or the glass stage on inverted microscopes. The phase ring is distinctively thicker. Works pretty well on thicker specimens.

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