Nikon 10X NA 0.25 160/- VS Cheap ebay Objevtive

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davidguitar
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Nikon 10X NA 0.25 160/- VS Cheap ebay Objevtive

Post by davidguitar »

Heres a picture of two stackes. One is made with edmunds Nikon objective (right) and the other one was shot with a cheap 20 dollar objective (left) . I Also skipped some dust cleaning in photoshop in the picture shot with the Nikon.

Image

ChrisR
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Post by ChrisR »

Nikon is a tad sharper?

Which Nikon exactly is it - there are so many of them?

The other isn't terrible for $20, though.
I've just ordered a $13.70 60x NA0.85 - that'll be interesting!
Chris R

MarkSturtevant
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Post by MarkSturtevant »

It looks like the Nikon wins, but that is mainly b/c the image with the cheap lens has greater contrast for some reason.
Mark Sturtevant
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Macrero
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Post by Macrero »

At that size it is hard/impossible to properly assess and compare.

Which Nikon 10/0.25 is that? Biggest difference usually will be image circle/coverage. All the cheap/chinese 10X objectives I know have unacceptably small image circle. If your mysterious, cheapo 10X covers well an APS-C sensor, that would be a nice finding.

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

davidguitar
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Post by davidguitar »

Macrero wrote:At that size it is hard/impossible to properly assess and compare.

Which Nikon 10/0.25 is that? Biggest difference usually will be image circle/coverage. All the cheap/chinese 10X objectives I know have unacceptably small image circle. If your mysterious, cheapo 10X covers well an APS-C sensor, that would be a nice finding.

- Macrero
I belive i bought the cheap objective from here:
https://www.ebay.com/itm/DIN-Achromatic ... 0005.m1851

It cover and apsc sensor.
Heres better images quality
ImageEye of the honey bee by David Janglöv, on Flickr
ImageNikon micorscope text by David Janglöv, on Flickr

Heres the nikon objetive:
https://www.edmundoptics.com/f/Nikon-Ac ... ves/13510/

rjlittlefield
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Post by rjlittlefield »

The links to Eye of the honey bee and Nikon micorscope text require logging in, and then they say "This photo is private."

--Rik

davidguitar
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Post by davidguitar »

rjlittlefield wrote:The links to Eye of the honey bee and Nikon micorscope text require logging in, and then they say "This photo is private."

--Rik
Sorry. Should work now

ChrisR
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Post by ChrisR »

Yes, they're working.
Ok Nikon wins, but for $19+ it's not bad.
That seller, joy8899, is one I've bought many small items from, all good value.
Chris R

rjlittlefield
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Post by rjlittlefield »

That cheap 10X looks quite good.

One nice feature of the Edmund Optics Nikon Finite Conjugate 10X is that on APS-C it can be pushed down to about 7X while retaining good corner quality.

See http://www.photomacrography.net/forum/v ... 7815#57815 for discussion.

--Rik

Macrero
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Post by Macrero »

Haven't tried that one. Yep, looks pretty good. Would be interesting to see a test stacks with a "2D"/flat subject (scales, laser printed paper, etc) at nominal magnification and say 7-8X.

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

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