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Good 10x objective: Nikon M Plan 10x/0.25 or Oly Plan 10x

 
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anto74



Joined: 06 Feb 2020
Posts: 66
Location: Italy

PostPosted: Sun Mar 29, 2020 10:52 pm    Post subject: Good 10x objective: Nikon M Plan 10x/0.25 or Oly Plan 10x Reply with quote

Hello,

Now I have generic 10x/0.20 infinite corrected plan acromatic (www.macroforum.org/fs/formica10x.jpg).

I'm looking for better 10x on a budget: I found Olympus 10x/0.25 infinity - 0 and Nikon M Plan 10/0.25 finite 210-0

Any advice please?

Thanks,

Antonio
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Chris S.
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Joined: 05 Apr 2009
Posts: 3481
Location: Ohio, USA

PostPosted: Mon Mar 30, 2020 12:09 am    Post subject: Reply with quote

Antonio,

I have no knowledge about the Olympus objective, but the Nikon M Plan 10/0.25 finite 210/0 is a "known good" lens for macro work. For about twice the price, I see a nice-looking Nikon N Plan 10/0.30 160/0.17 listed on eBay; these are quite good, and to my mind worth the extra money. Avoid the ones marked "phase" or "PH1".

You are aware that these finite objectives need to be mounted on a bellows or empty tubes, right?

If you want to stick with infinite objectives, there are current-production Nikon 10x CFI objectives of several models that are "known good." I've not used these, but other forum members can advise on them.

--Chris S.
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Pau
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Joined: 20 Jan 2010
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Location: Valencia, Spain

PostPosted: Mon Mar 30, 2020 12:52 am    Post subject: Re: Good 10x objective: Nikon M Plan 10x/0.25 or Oly Plan 10 Reply with quote

anto74 wrote:
I found Olympus 10x/0.25 infinity - 0

Which model?
Older metallographic Olympus objectives do need compensating eyepieces to correct CA while newer UIS and UIS2 models do not and they are designed for wide field microscopes so they seem much more convenient. Anyway the Nikon route seems safer.
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Pau
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anto74



Joined: 06 Feb 2020
Posts: 66
Location: Italy

PostPosted: Thu Apr 02, 2020 3:49 am    Post subject: Re: Good 10x objective: Nikon M Plan 10x/0.25 or Oly Plan 10 Reply with quote

Pau wrote:
anto74 wrote:
I found Olympus 10x/0.25 infinity - 0

Which model?
Older metallographic Olympus objectives do need compensating eyepieces to correct CA while newer UIS and UIS2 models do not and they are designed for wide field microscopes so they seem much more convenient. Anyway the Nikon route seems safer.

Thanks
i found Olympus MS Plan 10x/0.30 infinity corrected and this 10x/0.25 https://www.ebay.it/itm/MICROSCOPE-OBJECTIVE-OLYMPUS-PLAN-10X/283825834394

Maybe i can use the MS Plan without eyepiece?
Thanks
antonio
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Pau
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Joined: 20 Jan 2010
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PostPosted: Thu Apr 02, 2020 4:07 am    Post subject: Reply with quote

Being a UIS type, the linked objective seems OK, although I don't have direct references
- It seems a biological objective, not a MS although this is not important for 0.30 NA but the working distance could be shorter.
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Pau
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anto74



Joined: 06 Feb 2020
Posts: 66
Location: Italy

PostPosted: Thu Apr 02, 2020 4:19 am    Post subject: Reply with quote

Pau wrote:
Being a UIS type, the linked objective seems OK, although I don't have direct references
- It seems a biological objective, not a MS although this is not important for 0.30 NA but the working distance could be shorter.

Thanks and sorry for my english very limited...but i ask you: the MS Plan 10/0.30 is good objective and i can use this without eyepiece? ( this MS Plan on ebay USA). Or maybe is better buy this UIS 10x/0.25 in Italy?
Thanks
Antonio
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Pau
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PostPosted: Thu Apr 02, 2020 4:42 am    Post subject: Reply with quote

AFAIK the MS plan models are old style infinities that need compensating eyepieces, so the linked UIS Plan 10/0.25 is clearly more convenient for a macro style setup (and being in Italy it will end less expensive for you)
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Pau
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anto74



Joined: 06 Feb 2020
Posts: 66
Location: Italy

PostPosted: Thu Apr 02, 2020 5:04 am    Post subject: Reply with quote

Pau wrote:
AFAIK the MS plan models are old style infinities that need compensating eyepieces, so the linked UIS Plan 10/0.25 is clearly more convenient for a macro style setup (and being in Italy it will end less expensive for you)

Thanks Smile
Antonio
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anto74



Joined: 06 Feb 2020
Posts: 66
Location: Italy

PostPosted: Thu Apr 02, 2020 5:06 am    Post subject: Reply with quote

Thanks for info Smile
On Ebay Italy very limited offers...all in USA Smile
Antonio

Chris S. wrote:
Antonio,

I have no knowledge about the Olympus objective, but the Nikon M Plan 10/0.25 finite 210/0 is a "known good" lens for macro work. For about twice the price, I see a nice-looking Nikon N Plan 10/0.30 160/0.17 listed on eBay; these are quite good, and to my mind worth the extra money. Avoid the ones marked "phase" or "PH1".

You are aware that these finite objectives need to be mounted on a bellows or empty tubes, right?

If you want to stick with infinite objectives, there are current-production Nikon 10x CFI objectives of several models that are "known good." I've not used these, but other forum members can advise on them.

--Chris S.
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