4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?

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RobertOToole
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4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?

Post by RobertOToole »

Came across something interesting last night testing different stacked combinations. One stood out, so I decided to do a quick shoot with the Nikon Plan APO 4x/0.20 just for fun. Take a look below and see if you can guess what the mystery lens is.

This is the Nikon 4x Plan APO first. Very sharp and great details even at 100% view.

100% view center crop.

Image

Mystery lens stacked on a 90mm f5.6 tube lens, at 4x.100% view center crop. Not as good as the Plan APO but a great job at resolving details.

Image

Un-cropped resized image with the crop area highlighted.

Image

What do you think?

Anyone other than Lou and Chris R want to take a guess?

Clues:

Not a scope objective
Not a Componon
49mm filter threads
Not expensive at all
Easy to find on eBay
Not a limited supply item like a JML
About $800 new

dolmadis
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Post by dolmadis »

OM Zuiko 50mm f1.4?

RobertOToole
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Post by RobertOToole »

dolmadis wrote:OM Zuiko 50mm f1.4?
Shorter focal length and more industrial :D

dmillard
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Post by dmillard »

25mm f/0.95 Voigtlander Nokton? Wrong filter thread, but it's a shot in the dark :)

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Post by RobertOToole »

dmillard wrote:25mm f/0.95 Voigtlander Nokton? Wrong filter thread, but it's a shot in the dark :)
Good guess David but that lens is about 10X more expensive than the mystery. Also this one is not sold at stores, its more industrial in design.

dmillard
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Post by dmillard »

One last guess - a 25mm Fujinon C-mount lens?

RobertOToole
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Post by RobertOToole »

dmillard wrote:One last guess - a 25mm Fujinon C-mount lens?
Very close David, but the brand is wrong, its a german lens!

:shock:

Almost got it!

dolmadis
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Post by dolmadis »

Rodenstock Rogonar-S 25mm f4 ?

Macrero
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Post by Macrero »

Am I the only one who see not huge, yet clear difference between both crops? :? The Plan Apo resolving more fine detail. Please tell me my eyesight is fine :( :D

Hmm, too much lenses out there... :roll: German lens, not Schneider... Rodenstock (Linos)? Some machine vision lens probably? It would take a seer to solve the riddle...

- Macrero
https://500px.com/macrero - Amateurs worry about equipment, Pros worry about money, Masters worry about Light

chris_ma
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Post by chris_ma »

I'm still new to all this but I would have guessed something 28 to 35mm and F2.8 based on magnification and filter thread.

but I agree with Macrero that the result is nice but not spectacular, so unless this lens can be found very cheap and the tube lens as well I thought there might be better options out there (some of the older 4x stacked tests on roberts site look much better to me).

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Post by ChrisR »

Looks pretty good to me; it's hard to get this close to the quality at the center of that planapo.
Maybe you should have compared it with an MP-E, Robert!
Chris R

Macrero
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Post by Macrero »

ChrisR wrote:Looks pretty good to me; it's hard to get this close to the quality at the center of that planapo.
That's true. But since Robert asked: "Can you tell the diff?" I was just surprised no one noticed/mentioned that actually there is a pretty clear difference.

Plan Apo 4:

https://images2.imgbox.com/12/4c/iT2CsyNs_o.jpg

Mystery lens:

https://images2.imgbox.com/5e/df/qbvD6bCS_o.jpg
https://500px.com/macrero - Amateurs worry about equipment, Pros worry about money, Masters worry about Light

RobertOToole
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Post by RobertOToole »

dolmadis wrote:Rodenstock Rogonar-S 25mm f4 ?
Good guess, but f/4 is too slow.

Robert

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Post by RobertOToole »

Macrero wrote:Am I the only one who see not huge, yet clear difference between both crops? :? The Plan Apo resolving more fine detail. Please tell me my eyesight is fine :( :D

Hmm, too much lenses out there... :roll: German lens, not Schneider... Rodenstock (Linos)? Some machine vision lens probably? It would take a seer to solve the riddle...

- Macrero
You are correct I think, there is a clear difference, the Plan APO having the advantage of course.

There are clues, 4x on a 90mm tube, 90/4 = 22.5mm. Rounded up thats 23mm. Thats a big clue.

dolmadis
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Post by dolmadis »

Long shot - Leica Summicron-T 23mm f/2

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