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rjlittlefield Site Admin

Joined: 01 Aug 2006 Posts: 19548 Location: Richland, Washington State, USA
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Thu Jul 02, 2009 5:30 am Post subject: PARCO 4x MICROSCOPE LENS |
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Rik:
What I think to be most important is to show photos of the actual lenses that PMG members use. There are so many lenses out there and often they appear identical; some are useful for us, others not so.
An image of a useful lens is perhaps worth more than trying to describe it in words.
If there are images taken with that lens all the better.
But everyone remember, it's a 'buyer beware' situation; there is usually more than one way to get a certain magnification and one alternative may be a lot better than another. It's up to you, the reader, to look into the pros and cons of each lens.
An example of a useful lens and what it can do;
The 4x microscope objective that came with an old Parco microscope (I believe was made by Meiji) does not look similar to the Meiji 4x referenced in Rik's post. It's marked only 4/0.1 160/- and a red line, it seems even sharper than the Meiji SMPlan 4X.
LENS PHOTO HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Sat Jul 04, 2009 4:33 am Post subject: SCHNEIDER APO-COMPONON 40/2.8 |
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This HM 40/2.8 (fixed aperture) is a very sharp lens when use reversed. However, it is difficult to mount on a bellows.
LENS PHOTOS HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Sat Jul 04, 2009 4:56 am Post subject: NIKON CF M PLAN 20x |
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The 20/0.4 ELWD 210mm tube length is obviously a high magnification lens, possibly the maximum magnification practical for a camera/bellows setup. Useful only for the most experienced macrophotographer (not me!).
LENS PHOTO HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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ChrisR Site Admin
Joined: 14 Mar 2009 Posts: 8171 Location: Near London, UK
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Posted: Sat Jul 04, 2009 6:23 am Post subject: |
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I have a Schneider HM Apo 40/2.8, which I believe is just a few years old:
Looking at the back of the camera (x27) at an image of a microscope graticule (now broken ):
Gaffer-taped, until I get an adaptor, at about 7x, it's sharper than a 50/2.8 El Nik. Difficult to quantify, I'll do some better tests later.
A 50/2.8 Apo Rodagon is sharper than the Nik too, but almost imperceptibly.
I have a couple of queries, some of which I intend to answer myself, when/if I have time:
1) How much difference do you see between say a 10x NA 0.25 scope objective and a 10x NA 0.3?
2) Does anyone have comparisons of an infinity corrected lens vs a fixed tube length one, used on a bellows?
3) What about a 20x lens designed for use with a coverslip, used without one, compared with an M type designed to be used without one?
4) Or a lens designed to be used with a corrective eyepiece, used without one?
5) Or a lens used at the "wrong" tube length, to get a different magnification?
6) Or a Plan versus a Semiplan?
7) If not Plan so the field is curved, how much do stacking programs hide it?
8 ) Or field coverage - some 10x lenses cover 24x36, but do they all?
9) If your bellows focus block is from a microscope, what's the problem with say 40x objectives?
10) Is flash always fast enough to avoid vibration blur? (assuming you use mirror lock-up and rear-curtain sync) |
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Wayne Baker

Joined: 26 Nov 2008 Posts: 47 Location: Melbourne, Australia
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Posted: Sat Aug 15, 2009 10:59 pm Post subject: |
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I'm finding the Canon 65mm MP-E and 180mm f/3.5L to be very capable macro lenses... Highly recommended.
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Sun Aug 30, 2009 10:19 am Post subject: |
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Perhaps some of the best 7 lenses for 4x magnification.
PHOTOS HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Fri Sep 04, 2009 2:17 pm Post subject: 10x - 40x magnification |
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For 10x, 20x, 40x magnifications these Nikon microscope objectives are excellent:
Nikon CF N Plan Achromat 10/0.30 (9.2 mm working distance)
Nikon CF M Plan objectives, either designated LWD (long working distance), ELWD (extra long WD), or SLWD (super long WD).
See Charles Krebs' Photomicrography page:
HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Sat Sep 05, 2009 10:45 am Post subject: NIKON MF 105MM MICRO-NIKKOR for MAG. to 3.4x |
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My older Manual Focus 105 mm f/2.8 Micro-Nikkor (magn. to 1:2) is a versatile lens when used (non-reversed) on the PB-6 bellows, allowing for magnification up to 3.4x.
At infinity setting and minimum bellows extension the long-side field of view is 40 mm with a 29 cm working distance; full frame:
At its near focus position and maximum bellows extension, the long-side field of view is 7 mm with an 11 cm working distance. On my D90 (23.6 mm sensor) this represents about a 3.4x magnification; full frame:
 _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Fri Oct 23, 2009 12:42 pm Post subject: THE TRUE MACROS |
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Useful discussion on these super-lenses; especially the Nikon Macros and Zeiss Luminars but also others:
HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Fri Oct 23, 2009 12:48 pm Post subject: |
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The following post should have been on this page
NIKON 4X CF N PLAN _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Sat Oct 31, 2009 11:56 am Post subject: |
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The Nikon 40x SLWD CF M Plan Achromat can be used on a bellows setup for, at least, 30x and 40x mag on sensor.
Added: and with very little extension gives a good image at 16x.
IMAGES HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives
Last edited by NikonUser on Sun Nov 01, 2009 3:17 pm; edited 1 time in total |
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rjlittlefield Site Admin

Joined: 01 Aug 2006 Posts: 19548 Location: Richland, Washington State, USA
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Posted: Sat Oct 31, 2009 12:25 pm Post subject: |
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Numerous comparisons of
- Nikkor 50mm f/2.8,
- Olympus 38 mm f/2.8,
- Olympus 20 mm f/2,
- Luminar 16 mm f/2.5,
- Nikon CF M Plan Achro 10X NA 0.20 objective
are shown HERE. The illustrations are mostly for higher magnifications, in the 8-10X range, but all except the objective are very good to excellent for use at lower magnifications as well.
--Rik |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Sun Nov 01, 2009 3:18 pm Post subject: |
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For 60x magnification,
the Nikon CF M Plan 60/0.70 ELWD objective; working distance=4.9mm; very sharp.
Nice image of a butterfly's wing scales.
HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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NikonUser

Joined: 04 Sep 2008 Posts: 2555 Location: southern New Brunswick, Canada
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Posted: Fri Nov 20, 2009 10:57 am Post subject: |
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The 10x Nikon CF N Plan microscope objective can be used at 20.3x magnification:
HERE
and can be used at 15x magnification:
HERE
The Nikon 40x CF M Plan SLWD microscope objective can be used at 24.4x magnification
HERE
he Nikon Plan 4x objective, the Tominon 17mm f4, the Schneider-Kreuznach Componon 28mm f4, and the Leitz Summar f4.5 can all be used at just above 10x magnification
HERE _________________ NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives |
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